SIM University ACKNOWLEDGEMENTS This project would not have been possible without the guidance of my supervisor Dr. Jiang Fan from Singapore Polytechnic. I would like to express my sincere gratitude to Dr. Jiang Fan for his excellent guidance, valuable suggestions and enthusiastic encouragement throughout the project. Dr. Jiang’s experience in the research on PV solar cell has been very beneficial in compiling of the project. Prepared by Maung Maung 1 SIM University ABSTRACT This project is to study and analyze the Performance of Solar PV Systems in terms of efficiency and performance ratio, installed on HDB rooftops in Singapore. The efficiency and performance ratio are manipulated base on the measured value and calculated value. Solar irradiation data available from Singapore, NASA (National Aeronautics and Space Agency) and of University of Massachusetts Lowell are also discussed. Besides that, PV market from past to present and the future are also highlighted. Lastly, the essential aspect and fundamental electronics of PV solar cell and modules are also described in brief. Prepared by Maung Maung 2 SIM University TABLE OF CONTENTS ACKNOWLEDGEMENTS .............................................................. 1 ABSTRACT ................................................................................ 2 TABLE OF CONTENTS ................................................................ 3 LIST OF FIGURES ...................................................................... 5 LIST OF TABLES ........................................................................ 6 CHAPTER 1 ............................................................................... 7 INTRODUCTION ..................................................................... 7 1.1 Project Background and Motivation ................................. 8 1.2 Project Objective ............................................................. 8 1.3 Project Scope................................................................... 8 1.4 Project Plan ..................................................................... 9 CHAPTER 2 ............................................................................. 10 REVIEWS ON PV HISTORY ................................................... 10 2.1 History of Photo voltaic ................................................. 11 CHAPTER 3 ............................................................................. 13 SUN and LIGHT .................................................................... 13 3.1 Properties of Sun and Light Energy ............................... 14 3.1.1 The Sun .................................................................................................. 14 3.1.2 Nature of Light .................................................................................... 15 3.1.3 Energy of Photon ................................................................................ 15 3.1.4 Photon Flux ........................................................................................... 15 3.2 Solar Radiation .............................................................. 16 3.2.1 Solar Radiation at Earth’s surface ............................................... 16 3.2.2 Atmospheric Effects ........................................................................... 17 3.2.3 Direct and Diffuse Radiation .......................................................... 17 3.2.4 Air mass ................................................................................................. 18 CHAPTER 4 ............................................................................. 20 THEORETICAL BACKGROUND of PHOTO-VOLTAIC ................ 20 4.1 How Photovoltaic Works ................................................ 21 4.1.1 Intrinsic Semiconductor ................................................................... 21 4.1.2 Extrinsic Semiconductor .................................................................. 22 4.1.3 p-n junction Diode ............................................................................. 23 4.1.4 The Potential Barrier in Action ...................................................... 24 4.1.5 Solar Cell Structure ........................................................................... 25 4.1.6 Light Generated Current .................................................................. 26 Prepared by Maung Maung 3 SIM University 4.1.8 Shot circuit Current ........................................................................... 29 4.2 Types of Semiconductors ............................................... 30 4.2.1 Single Crystalline Silicon ................................................................. 31 4.2.2 Multi-crystalline or poly-crystalline Silicon............................... 31 4.2.3 Thin Film ................................................................................................ 32 4.3 Solar Cell Efficiency ....................................................... 33 4.3.1 Optical loses ......................................................................................... 33 4.3.2 Recombination Losses ...................................................................... 35 4.3.3 Resistance loses .................................................................................. 35 CHAPTER 5 ............................................................................. 37 ANALYSIS OF SOLAR PV MODULE on HDB ROOFTOP ............ 37 5.1 Singapore weather at a glance ...................................... 38 5.2 Brief description of installed PV modules....................... 39 5.2.1 PV module description and technical specification ................ 40 5.2.2 PV module images on HDB roof top............................................ 41 5.2.3 Data collection ..................................................................................... 42 5.2.4 Problems encountered ...................................................................... 44 5.3 Measurement of solar Irradiance ................................... 50 5.3.1 Analysis on solar Irradiance ........................................................... 50 5.4.1 Analysis on Performance Ratio ..................................................... 53 5.4.2 Comparison of Performance Ratio by month .......................... 54 5.4.3 Analysis on Efficiency ....................................................................... 59 5.4.4 Comparison on Efficiency by month ........................................... 60 5.4.5 Comparison on Power(kWh) by month ...................................... 64 CHAPTER 6 ............................................................................. 68 PV MODULES and ARRAYS ................................................... 68 6.1 PV Modules and Arrays .................................................. 69 6.2 Module structure ........................................................... 69 6.3 Modules interconnection ................................................ 70 6.3.1 Series connection ............................................................................... 71 6.3.2 Mismatch Effects in series connection ....................................... 71 6.3.3 Parallel connection ............................................................................. 72 6.3.4 Mismatch Effects in parallel connection .................................... 72 6.3.5 Hot-Spot Heating ................................................................................ 73 CHAPTER 7 ............................................................................. 74 PV MARKET .......................................................................... 74 7.1 Solar PV market and Potential ....................................... 75 7.2 Challenges for PV market growth in South-East Asia ..... 80 7.3 Recommendations for growth of PV Market in Southeast Asia ..................................................................................... 80 Prepared by Maung Maung 4 SIM University CHAPTER 8 ............................................................................. 82 CONCLUSION and RECOMMENDATION ................................. 82 REFERENCES ........................................................................... 85 APPENDIXES .......................................................................... 87 1. PV module technical specification.................................... 87 2. Measurement data for individual block ............................ 88 LIST OF FIGURES Figure 3.1 the interior of the Sun ................................................. 14 Figure 3.2.1 Amount of solar radiation outside the Earth's atmosphere against that reaching the Earth itself. ........................................... 16 Figure 3.3.2 Atmospheric affect on solar radiation ......................... 17 Figure 3.4.3 Direct and diffuse radiation ....................................... 18 Figure 3.5.4 Measurement of Air Mass ......................................... 19 Figure 4.1 An ingot of silicon ........................................................ 21 Figure 4.1.1 Diamond Cubic Crystal Structure, Silicon unit cell ......... 21 Figure 4.1.1 (a) Covalent bond in silicon crystal lattice and the Energy band diagram ............................................................................ 22 Figure 4.1.2 (a) P-type silicon and the Energy band diagram ........... 23 Figure 4.1.3 forming of p-n junction ............................................. 23 Figure 4.1.4 potential barrier in Action .......................................... 24 Figure 4.1.5 solar cell structure .................................................... 26 Figure 4.1.6 Photo current generation ........................................... 26 Figure 4.1.6 ............................................................................... 27 Figure 4.1.7 I-V Curve characteristic ............................................. 28 Figure 4.1.8 (a) I-V curve showing short circuit current................... 29 Figure 4.1.8 (b) IV curve showing open circuit voltage .................... 29 Figure 4.2.1 silicon solar cell and top of Czochralski ingot ............... 31 Figure 4.2.2 Slab of multi-crystalline silicon after growth and textured wafer surface ............................................................................. 31 Figure 4.3.1 Optical loses in solar cell .......................................... 34 Figure 4.3.2 surface texturing to reduce reflection ......................... 34 Figure 5.2.3 Data logger ............................................................ 42 Figure 5.3 shows the pyrheliometer & pyranometer ....................... 50 Figure 5.4.2 (a) Performance ratio for Blk 508A ............................ 54 Figure 5.4.2 (b) Performance ratio for Blk 508B ............................ 54 Figure 5.4.2 (c) Performance ratio for Blk 508C............................. 55 Figure 5.4.2 (c) Performance ratio for Blk 509A............................. 56 Figure 5.4.2 (e) Performance ratio for Blk 509B ............................ 56 Prepared by Maung Maung 5 SIM University Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 5.4.2 (f) Performance ratio for Blk 510A ............................. 57 5.4.2 (g) Performance ratio for Blk 510B ............................ 57 5.4.2 (h) Performance ratio for car park ............................. 58 5.4.4 (a) Efficiency for Blk 508A ........................................ 60 5.4.4 (b) Efficiency for Blk 508B ........................................ 60 5.4.4 (c) Efficiency for Blk 508C ........................................ 61 5.4.4 (d) Efficiency for Blk 509A ........................................ 61 5.4.4 (e) Efficiency for Blk 509B ........................................ 62 5.4.4 (f) Efficiency for Blk 510A ......................................... 62 5.4.4 (g) Efficiency for Blk 510B ........................................ 63 5.4.4 (h) Efficiency for car park ......................................... 63 5.4.5 (a) power out put for BLK 508A ................................. 64 5.4.5 (b) power out put for BLK 508B................................. 65 5.4.5 (c) power out put for BLK 508C ................................. 65 5.4.5 (d) power out put for BLK 509A................................. 65 5.4.5 (e) power out put for BLK 5089b ............................... 66 5.4.5 (f) power out put for BLK 510A ................................. 66 5.4.5 (g) power out put for BLK 510B................................. 67 5.4.5 (h) power out put for car park ................................... 67 6.1 PV modules and Arrays ................................................ 69 6.2 schematic of module construction ................................. 70 6.3.1 series connection of cells and I-V characteristic ............ 71 6.3.3 Parallel connection of cells and I-V characteristic .......... 72 6.3.5 shows the shaded cell ............................................... 73 6.3.5 (a) shows the crack cell due to the hot spot ................. 73 7.1 PV market growth in Asia Pacific region.......................... 76 7.1(a) APAC represent 20% of worldwide market ................. 77 7.1(b) shows forecast of PV installed in Singapore ................ 78 7.1 (c)24.3 MWp solar park in Dong Yang Sinan of S.Korea ... 78 7.1 (d) 1.3 MWp solar plant in Saba, Malaysia ...................... 79 LIST OF TABLES Table 4.2 (a) shows various type of crystalline silicon ..................... 30 Table 4.2 (b) Module and cell efficiencies ...................................... 30 Table 5.2.1 Technical specification of PV........................................ 40 Table 5.2.3 Irradiation data from RI and SNGS .............................. 43 Table 5.2.4 (a) Out put data form PV module in csv format. ............ 45 Table 5.2.4 (b) Sorted data ......................................................... 46 Table 5.2.4 (c) Solar irradiation data of Raffles Institution, September 30th 2009, 4:05 pm to 6:45 pm ................................................... 48 Table 5.2.4 (d) Monthly irradiation data comparison ....................... 49 Table 5.3.1 shows the comparison of irradiation data ...................... 51 Table 7.1 past and prediction of future PV installation ..................... 75 Prepared by Maung Maung 6 SIM University CHAPTER 1 INTRODUCTION Prepared by Maung Maung 7 SIM University 1.1 Project Background and Motivation Ever-increasing oil and gas prices and improving support in the research for solar power and energy are driving solar photovoltaic (PV) cell market. Other drivers include increasing popularity of "green" energy, rising electricity costs and emergence of more efficient solar PV technologies. To be able to compete in the global clean market that grows rapidly, Singapore has identified Clean Energy, especially solar energy, as a new emerging industry and R&D area and aims to develop the country as a global clean energy hub. Since last year, the government has set aside various funding for applications of solar photovoltaic(PV). As more PV systems are installed in the country, it is important to investigate the performance of the installed PV systems under the tropical region. 1.2 Project Objective This project is to study and analyze the Performance of Solar PV Systems Installed on HDB rooftops in Singapore (Sembawan). The procedures are to collect the data of a few installed PV systems, and to conduct the analysis on the energy yield and performance ratio of different systems in a long period. The analytical results will help new installer or owner of a PV system to estimate the energy yield of PV system and understand the factors that impact the system operation. The educational purpose of this project is to develop the skills in the mixture of research, analysis, project management and problem solving skills. 1.3 Project Scope The project scope are: 1. data collection from PV systems form Feb to September 2009, 2. working out on AC and DC out put power from the collected data, 3. data collection of solar radiation from several junior colleges and primary schools, Prepared by Maung Maung 8 SIM University 4. analysis on the performance ratio and efficiency base on the collected and measured data. 1.4 Project Plan project proposal and approval literature review project initial report meeting w ith supervisor review project plan study Building Integrated PV solar systems study installation of PC on HDB roof tops meeting w ith supervisor review project plan assess project progress by supervisor gathering of information for report w riting meeting w ith supervisor completion of final report oral Presentation Completed Remaining 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 Figure 1.4 project plan Prepared by Maung Maung 9 44 46 48 50 SIM University CHAPTER 2 REVIEWS ON PV HISTORY Prepared by Maung Maung 10 SIM University 2.1 History of Photo voltaic The power of the sun is being harnessed for millennia since human being inhabited this earth. In 1760s, insulated rectangular box with a glass cover was built by Horace de Saussure became the prototype for solar collectors used to heat water. In 1839, the first photovoltaic effect was discovered by a French physicist Edmond Becquerel. After thirty years later, in 1870, the PV effect was first studied in solids, such as selenium by Engineer Willoughby Smith. In the late 1890s, The first commercial solar water heaters were sold in the U.S. and such devices are continue to be used for pool and other water heating. In 1904 the physical explanation of light was given by Albert Einstein. Only in 1954 modern PV began with the invention of the silicon solar cell (first silicon solar cell) at Bell Laboratories by Chapin, Fuller and Pearson with a 4% efficiency. Bell Lab bettered this to 6% efficiency which was soon increased to 11%. In 1958, the U.S. Vanguard space satellite used a small(less than onewatt) array of cells to power its radio. In 1961, the first fundamental theory was explained by Shockley and Queisser based on detailed balance. During 1970s, advances in solar cell design and technology brought prices down and led to their widely use in domestic and industrial applications. PV cells start to involve in real life applications such as to power lighthouses, railroad crossings and offshore gas and oil rigs. In 1977, studying of solar energy was greatly impressive when the U.S. Department of Energy created the Solar Energy Research Institute. Later on it was renamed as the National Renewable Energy Laboratory (NREL). Its scope expanded not only on solar energy but also included research on other renewable energy sources. NREL continues to research and develop solar energy technology until today. Prepared by Maung Maung 11 SIM University Development in solar energy technologies and government including private research have led to continuing innovation over the last 30 years. The conversion efficiency of PV cells ,meaning, the amount of sunlight (in percentage) hitting the surface of the cell that is converted to electricity has been improving. Cell efficiencies almost approaching to 20 percent. The global PV market has been growing by an average of 30 percent annually since past 15 years. Thus, the cost of electricity generated from PV modules has also fallen drastically, from more than 45 cents per kilowatt hour (kWh) in 1990 to about 23 cents per kWh in 2006. In 2006 and 2007, a shortage of silicon (a primary component of crystalline silicon PV systems) momentarily increased PV module costs, but prices are expected to lower again between 2008 and 2011, when silicon plants currently under construction are completed. Prepared by Maung Maung 12 SIM University CHAPTER 3 SUN and LIGHT Prepared by Maung Maung 13 SIM University 3.1 Properties of Sun and Light Energy 3.1.1 The Sun The sun is most probably the source of all available energy on earth. It is an average star at the center of the Solar System with inner temperature over 20 million degrees Kelvin because of the nuclear fusion reactions at its core which convert hydrogen to helium. A layer of hydrogen atoms closer to its surface absorbs the radiation from the inner core and hence it is not visible. Heat is transferred through this layer by convection, meaning it is transferred in a gas or liquid by the circulation of currents from one region to another. The surface of the sun is called the photosphere and the temperature is about 6000K , precisely, 5762 ± 50 K and very much approximates a blackbody. The total power emitted by the sun is given as 9.5 x 1025 W. Figure 3.2 the interior of the Sun Prepared by Maung Maung 14 SIM University 3.1.2 Nature of Light The light incident on the earth is in fact only a fraction of the total energy emitted by the sun. Sunlight is a form of "electromagnetic radiation" and the visible light which is about about 400–700 nm, or perhaps 380–750 nm is only a small part of the electromagnetic. Today, scientists have accepted that light as both wave nature and the particle nature with the explanation of quantum-mechanics. 3.1.3 Energy of Photon A photon is characterized by either a wavelength, λ or energy, E. The energy of a photon (E) is inversely related with the wavelength of the light (λ) and given by the equation E=hc/λ h is Planck's constant, and c is the speed of light. A commonly used unit of energy is the electron-volt (eV) rather than the joule (J) so long as photons or electrons are concerned. An electron volt is the energy required to raise an electron through 1 volt, and there fore 1 eV = 1.602 x 10-19 J. 3.1.4 Photon Flux The photon flux is defined as the number of photons per second per unit area: The photon flux determines the number of electrons which are generated, and hence the current produced from a solar cell. The photon flux does not provide the information of neither the energy nor wavelength of the photons. Hence the energy or wavelength of the photons in the light source must also be specified. The power density of photons at a given wavelength can be calculated by multiplying the photon flux and the energy of a single photon. Prepared by Maung Maung 15 SIM University 3.2 Solar Radiation 3.2.1 Solar Radiation at Earth’s surface The power output per second is 3.86 x 1020 megawatts (MW) that is about power of 1.37 kW/m2. Not all of the total power emitted by the sun reaches the earth and it is about 30% reduced as it passes through the atmosphere. Gasses, dust and aerosols are the main absorber that absorb the incident photons. Almost all of the X-rays are attenuated before reaching the surface of our earth. Like wise relative amount of ultraviolet radiation is also filtered out by the atmosphere. Some sort of rays are reflected back into space. Wave length of 0.3μ, which is short wave length of high energy or below are strongly absorbed by ozone, O3. Wave length of 1μ are absorbed by water vapor H2O and longer wave length of about 1.5 – 2μ are absorbed by CO2 Figure 3.3.1 Amount of solar radiation outside the Earth's atmosphere against that reaching the Earth itself. Prepared by Maung Maung 16 SIM University 3.2.2 Atmospheric Effects The atmosphere has several impact on the solar radiation at earth’s surface and the main effects are absorption, scattering and reflection. Figure 3.4.2 Atmospheric affect on solar radiation 3.2.3 Direct and Diffuse Radiation The solar radiation reaching the earth is removed by several means mainly scattering or absorption. The radiation which is not reflected or scattered and reaches the earth’s surface directly is called direct or beam radiation. The scattered radiation when reaches the ground is called diffuse radiation. Some may reach the receive or solar module after reflection from the ground is called albedo. Prepared by Maung Maung 17 SIM University Figure 3.5.3 Direct and diffuse radiation 3.2.4 Air mass It is a quantity or air mass (AM) of atmosphere is a path length through which the sun light must pass through. This can be approximated by Radiation at the surface of the earth is measured against that reaching the fringes of atmosphere where there is no air or air mass is zero. The intensity of sunlight at ground weaken for sun angle measured at horizon where as the nigh noon sun passes through the air mass of one. Prepared by Maung Maung 18 SIM University Figure 3.6.4 Measurement of Air Mass When θ=0, the air mass is one or AM1 whereas air mass of 1.5 is measured when the sun angle of 48.2˚ and this is the standard for photovoltaic work. Prepared by Maung Maung 19 SIM University CHAPTER 4 THEORETICAL BACKGROUND of PHOTO-VOLTAIC Prepared by Maung Maung 20 SIM University 4.1 How Photovoltaic Works Solar cells are photovoltaic devices that convert incident light energy into electrical energy. In fact it is a large piece of p-n junction diode joined together. The properties of semiconductor materials is the back bone of photovoltaic devices. The basic of the physical structure is used to explain the operation of a p-n junction, which is the basis of the solar cells. Figure 4.7 An ingot of silicon 4.1.1 Intrinsic Semiconductor Intrinsic semiconductor is a perfect crystal of material like Si, with no impurities. These atoms bonded together like in a diamond lattice as shown below. Figure 4.8.1 Diamond Cubic Crystal Structure, Silicon unit cell In Si lattice, four outer electrons from each Si atom forms a covalent bond with a corresponding electrons of a neighbouring Si atom. Electrons are immobile and cannot contribute to electrical conduction Prepared by Maung Maung 21 SIM University when present in the valence band. When excited or present in the conduction band, the electron contributes to electrical conduction Figure 4.9.1 (a) Covalent bond in silicon crystal lattice and the Energy band diagram 4.1.2 Extrinsic Semiconductor n-type Figure 4.1.2 N-type silicon and the Energy band diagram n-type semiconductor is formed by doping the Group V elements like As or P in a small quantities as impurities. The Group V element take up its position in the lattice and 4 of its valence electrons bond with the respective Si atoms and the fifth electron left un-bonded. Thus it is wondering in the lattice and ready to conduct electricity. Dopants are ionized positive charges & does not move. Prepared by Maung Maung 22 SIM University p-type Figure 4.10.2 (a) P-type silicon and the Energy band diagram P-type semiconductor is formed by doping the element of Group III like B, as impurity. Boron has only 3 valence electrons and when it replace for a Si atom, one of its bonds has an electron missing and thus creating a hole in a lattice. It is ready to accept to an electron. Dopants are ionized negative charges & does not move. 4.1.3 p-n junction Diode P-n junction diodes form the basis of solar cells, with the process of recombination, generation, diffusion and drifting. p-n junction is formed by joining the p-type and n-type semiconductor material together as shown below. Figure 4.11.3 forming of p-n junction Prepared by Maung Maung 23 SIM University If we create a Si material which is n-type in one region & p-type in an adjacent region, with an abrupt discontinuity from n to p, we call it an abrupt pn junction. Immobile charges remain in tact. An internal field is created by the immobile charges which opposes electron and hole flow. A potential barrier exists for electrical conduction. The electron and hole flow ultimately stops, leaving with a depletion region of immobile charges around M. 4.1.4 The Potential Barrier in Action Assuming light strikes the PV cell. The light has enough energy to free an electron from a bond in the silicon crystal and create an electron hole pair, i.e. a free electron and a free hole. Now, we assume further that electron-hole pair is generated on p-side of the junction. Since ptype silicon side is having numerous holes, the created free electron is very likely to combine with one of the holes in a very short time. If it is combined with a hole, the electron will lose its energy as heat which is undesirable for PV cell. Thus, the electron has only a relatively short time during it is free. p-type Idiffusion n-type Idrift. EC EC EF EF EV EV Depletion region Figure 4.12.4 potential barrier in Action Prepared by Maung Maung 24 SIM University However, solar cells are designed in such a way that the electron will has a possibility of wandering around the crystal and come across the junction before it has the chance to combine with a hole. Once the free electron is entering the field of the junction, it is accelerated across the barrier into the n-type side of the silicon due to barrier's charge imbalance. The accelerated electron, which just entered to n-side, is not in a great danger of recombining with hole as n-type silicon is having very few holes compare to p-type. Furthermore, repulsion of the junction's field makes the electron not to return back to p-side of the junction. Electron usually doesn’t have high energy to overcome the repulsion force. The hole created together with electron due to light in the earlier part of the topic however, remains on the p-type side of the junction. This is because the barrier at the junction repels the hole. As there are already a predominance of holes on the p-type side, it is not in danger of recombining as well. A similar situation occurs when the electronhole pairs are generated by light on the n-type side of the junction. This time the barrier repels the free electrons and makes them remain at the n-side. In the meantime, most of the holes cross the junction and accelerated into p-side before chancing to recombine. As there are very few free electrons available to fill the holes in psides, the holes move around freely. Charge imbalance exists in the cell due to the presence of uncombined excess negative charges on the n-type side and excess holes on the p-type which is caused by illumination and charge separation. 4.1.5 Solar Cell Structure A solar cell is a thin pn junction and it is constructed as light shines on the n-side. Depletion width extends mainly on the lightly-doped p-side. There is a built-in potential and hence a built-in electric field Eo. Contacts are made to both n- and p-side. The contact on n-side is a finger electrode array which is design to be as thin as possible to allow light to enter. n-side has anti-reflection coating, which is to minimize reflection and maximize transmission. Prepared by Maung Maung 25 SIM University Figure 4.13.5 solar cell structure 4.1.6 Light Generated Current Photon or light energy that hit the solar cell must be larger than the band gap in order to promote an electron to the conduction band to conduct electricity, else they will be drifted. EHPs are formed when light is illuminated on the device. n-side is made thin, so that maximum light is transmitted and absorbed in the depletion region. Built-in field separates the EHPs and electrons drift to n-side and holes to p-side. An open circuit voltage is developed across the ends of the pn junction, with p-side more positive. If we connect an external load, the excess electrons and holes will flow through the load causing a current. This current is due to the incident light that was made available. Figure 4.14.6 Photo current generation Prepared by Maung Maung 26 SIM University The current flow due to the photo-generated carriers in the external load is called photocurrent Iph. Note that, there was no external voltage applied. An open circuit voltage is generated in response to an incident light. Photo-generation of EHPs that contribute to photovoltaic effect occurs with in a volume covering Lh + W + Le as shown in fig 2.1.6. EHPs generated outside of this region are lost by normal recombination. If the terminals of device is shorted, the excess electrons in n-side flow out through external circuit to neutralize the holes. Current Iph is generated. Light I = Id Isc = Iph I Iph I V Iph V = 0 R (a) d V Iph R (b) (c) Figure 4.15.6 (a) solar cell connected in series with external load R (b) the solar cell in short circuit, the current is Iph (c) the solar cell driving an external load R and I-V is generated. With the voltage across the junction acts as a normal diode and thus there is a diode current and the net diode current is I=Id-Iph Prepared by Maung Maung 27 SIM University Short circuit current Isc = -Iph = -K.L, where L is the light intensity. Id is due to normal diode behaviour: Total current is therefore Typical open circuit voltage ranges from 0.5 – 0.7 V 4.1.7 I-V curve Figure 4.16.7 I-V Curve characteristic As Isc = -Iph, the graph is shifted down by the light and the photo voltaic operation is always in negative current region. External bias voltage is required for positive current. The diode law become, where IL = light generated current. Prepared by Maung Maung 28 SIM University 4.1.8 Shot circuit Current This is the maximum current when the solar cell is short circuited. Short circuit current is measured when the voltage across it is zero and it is directly proportional to the sunlight. Figure 4.17.8 (a) I-V curve showing short circuit current 4.1.9 Open circuit Voltage This is the maximum voltage occur at zero current. Open circuit voltage is directly proportional to amount of forward bias voltage and the I-V curve is shown below Figure 4.18.8 (b) IV curve showing open circuit voltage Prepared by Maung Maung 29 SIM University 4.2 Types of Semiconductors The most critical parts of a PV system are the cells which form the basic building blocks of the unit, collecting the sun’s light. Modules are formed by bringing together large numbers of cells into a unit. The photovoltaic module forms the PV system and determines the performance, cost and reliability. The 50%– 55% of the overall installed cost of a PV system goes to the module. Because of the significance of the impact of the module on the system, research and study are intensively carried out to increase the module performance, reduce costs, and increase reliability. Semiconductor material used for solar cell can be crystalline, multi crystalline, poly crystalline and micro crystalline or amorphous. Table 4.1 (a) shows various type of crystalline silicon Ref: http://pvcdrom.pveducation.org/ Table 4.2 (b) Module and cell efficiencies Ref: Solar Generation V – 2008 Solar electricity for over one billion people and two million jobs by 2020 Prepared by Maung Maung 30 SIM University 4.2.1 Single Crystalline Silicon A single crystal refers to a grain boundary free mono-crystalline solid. It has an ordered structure with each atoms ideally arranged in a regular pattern. The most expensive type of silicon, due to the sophisticated manufacturing process is required, manufactured using the Czochralski process. Figure below shows the single crystalline silicon solar cell, which is grown as a large cylindrical ingot producing circular or semi-square shape. Crystalline silicon is still the mainstay of most PV modules, with more than 90% of market in United State. Since volumes of crystalline silicon product sales have grown and as well as the technology’s performance has advanced, the c-Si technologies have continued to show steady improvement in cost. Figure 4.19.1 silicon solar cell and top of Czochralski ingot 4.2.2 Multi-crystalline or poly-crystalline Silicon Figure 4.20.2 Slab of multi-crystalline silicon after growth and textured wafer surface Solar cells manufactured from this multi or poly-crystalline silicon have an advantage over c-silicon in terms of cost reduction. Production of these silicon are more simple and cheaper, than those required for single crystal material. Nevertheless, the quality of material is lower than that of single crystalline material due to the presence of grain boundaries. Due to the grains of different orientation show up as light and dark, wafer has been textured. Grain boundaries introduce Prepared by Maung Maung 31 SIM University chances of high recombination due to the extra defect energy levels into the band gap, thus reducing the overall minority carrier lifetime from the material. Besides that, grain boundaries reduce solar cell performance. 4.2.3 Thin Film This is a cost efficient technology depositing extremely thin layers of photosensitive materials of about less than 1 micrometers in thickness. It uses large substrates of several square meters of continuous sheets, glass, stainless steel or even plastic. They could be both flexible and rigid. These are the advantages of exploiting thin film over crystalline silicon and a temporary shortage of silicon has also offered the opportunity of manufacturing thin film technology . Over the long terms, manufacturing cost of thin films could be significantly lower than those of c-Si technologies. There are basically three types of thin film modules which are commercially available in the market. 1) amorphous silicon (a-Si), 2) copper indium diselenide (CIS, CIGS) and 3) cadmium telluride (CdTe). Among the three commercially available thin film technologies, a-Si is the most important in terms of production and installation. Prepared by Maung Maung 32 SIM University 4.3 Solar Cell Efficiency It is possible to produce the solar cell with the efficiency of about 24% in laboratory but typical efficiencies are 10-15%. Efficiency is commonly used to compare the performance of solar cell. It is defined as the ratio of energy output from the solar cell to the input energy from the sun. The efficiency of a solar cell is the fraction of incident power which is converted to electricity and is defined as: Voc - the open-circuit voltage; Isc - the short-circuit current; FF - the fill factor η - the efficiency. The major factors that limit cell efficiencies are Optical loses Recombination loses Resistance loses 4.3.1 Optical loses Optical losses consist of a) the light is reflected from the front surface, or b) because it is not absorbed in the solar cell. Basically, the following happen when light entering solar cell a) it go straight through b) it is absorbed and generating heat c) it separate an electron from its bond and producing EHPs d) it produce an EHPs but becoming heat as excess of energy Prepared by Maung Maung 33 SIM University Figure 4.21.1 Optical loses in solar cell Several ways to reduce the optical losses: 1) minimizing the top contact coverage of the cell surface. 2) using the Anti-reflection coatings on the top surface of the cell. Anti-reflection coatings consist of a thin layer of dielectric material, with a specially chosen thickness. 3) surface texturing to reduce reflection. Any "roughening" of the surface reduces reflection by bouncing back onto the surface, rather than out to the surrounding air. Figure 4.22.2 surface texturing to reduce reflection Prepared by Maung Maung 34 SIM University 4) thicker p side of the cell to increase absorption To capture these long wavelengths, the p-side must be thick and Le (electron diffusion length) large. 4.3.2 Recombination Losses Fundamental conditions required for such current collection are: 1) The carrier has to be generated within a diffusion length near the junction, such that it will be able to diffuse to the junction before recombining. 2) the quantity of minority carriers at the junction edge. The number of minority carriers injected from the each of the opposite side is simply the number of minority carriers in equilibrium multiplied by an exponential factor. Thus minimizing the equilibrium minority carrier concentration reduces recombination. This is achieved by increasing the doping. 3) To minimize recombination and achieve a high voltage, a high diffusion length is required. The diffusion length depends on the types of material, the processing history of the cell and the doping concentration. High doping reduces the diffusion length, thus introducing a trade-off between maintaining a high diffusion length (which affects both the current and voltage) and achieving a high voltage. 4) High recombination occur at the top surface has an impact on the short-circuit current because top surface also corresponds to the highest generation region of carriers in the solar cell. This can be achieved by growing a "passivating" layer (usually silicon dioxide) on the top surface to lower the high top surface recombination. 4.3.3 Resistance loses Resistance loses in solar cell happen normally in three places 1) In the bulk of the base material 2) In the narrow top surface layer 3) At the interface between the cell and the electric contacts. Prepared by Maung Maung 35 SIM University This can be prevented by highly doping into the cell and having the numerous free carrier to conduct electric current. However there are some constraints associated with doping. Prepared by Maung Maung 36 SIM University CHAPTER 5 ANALYSIS OF SOLAR PV MODULE on HDB ROOFTOP Prepared by Maung Maung 37 SIM University 5.1 Singapore weather at a glance Singapore is 8 hours advance the GMT and it is situated at the latitude of 1 degrees 18' north and longitude of 103 degrees 50' east of equator. The precise location is 96 km north of the equator, between longitude 103 degrees 36' East and 104 degrees 25' East. Singapore is a small, developed, island city-state in Southeast Asia, located at the southern tip of the Malayan Peninsula between Malaysia and Indonesia. Singapore's climate is classified as equatorial with no true distinct seasons. Because of its geographical location and maritime exposure, its has uniform temperature and pressure, high humidity and abundant rainfall. Rain fall is throughout the year with more consistent rain during the monsoon season from November to January. Showers are usually sudden and heavy, but brief and refreshing. The temperature ranging from a minimum of 23 °C and a maximum of 34 °C. June is the hottest month of the year in Singapore, followed by May. This is due to light winds and strong sunshine during those months. But so long as the photovoltaic solar application is concerned, high temperature is not preferable. However, in Singapore the year round availability of solar radiation is reasonably good for solar cell application. Relative humidity is around 60% in the mid-afternoon, but does go below 50% at times. In May 2009, the average relative humidity was 83%, an increase over the figure of 79.1% in May 2008. Relative humidity often reaches 100% during prolonged heavy rain. Generally, there is more rainfall on the western side of the island than that of eastern portion of Singapore, owing to a rain shadow effect. Thus, the eastern side of Singapore is much drier and slightly hotter than that of west. Although it is small size, there may be sunshine on one side while there is rain on the other. Prepared by Maung Maung 38 SIM University 5.2 Brief description of installed PV modules In this project, the measured output of eight photovoltaic systems, seven 10 kW PV modules including one 3.3 kW are compared. Consisting the same hardware installed on 8 HDB (BLK 508A/B/C, 509A/B, 510A/B and multistory car park) rooftop at Wellington circle, Sembawan, north of Singapore. The 3.3 kW module is installed at multistory car park. There are altogether 69 modules per HDB block and the total power out put (Watt peak) is 10 kW peak except the 3.3 kW peak which is form 23 modules. Three inverters are responsible for converting from DC to AC values. Monthly data is downloaded from sunny web box or data logger that store the out put data from the three inverters. The data used for analysis is from Feb, 2009 to September 31, 2009. PV power output have been measured in each month and efficiency and performance has been investigated based on the experimental data. Prepared by Maung Maung 39 SIM University 5.2.1 PV module description and technical specification Module description 72 highly efficient single crystal silicon solar cells are used in this project. The solar cells have an anti reflection surface coating to increasing the optical efficiency. The solar cells are wired together in three strings, each of which is protected with a by pass diode against damage through hot spots. The module is design to protects the solar cells against moisture, gives UV stability and allows for thermal expansion. The front covering is made of top quality tempered solar glazing. The solar glazing and the solar cell laminate are joined together into a unit and mounted in a torsion resistant frame, made of anodized aluminum. Technical specification Technical Specification AS150 AS160 AS170 Rated power, Pmax [Wp] 150 160 170 Rate current, IMPP [A] 4,4 4,6 4,82 Rate voltage, UMPP [V] 34 35 35,2 Short circuit current, Ik [A] 4,8 5,3 5,35 Open circuit voltage, UL [V] 43,4 43,5 44,1 System voltage [V] 800 800 800 Length [mm] 1618 1618 1618 Width [mm] 814 814 814 Height [mm] 35 35 35 Height (with box) [mm] 35 35 35 Weight [kg] 14.5 14.5 14.5 Table 3.2.1 Technical specification of PV http://www.sunsetsolar.de/en/catalog/stand_alone_systems/solar_generators/details/as_ 150_as_160_as_170.html?tx_ttnews[backPid]=86&cHash=3e3662190 f Output Power (max) *100 Module Area * Solar irradiation(kWh) 150 modules efficiency(%)= *100 (814 *10 3 )(1618*10 3 )1*103 modules efficiency(%)= modules efficiency(%)=11.39% Prepared by Maung Maung 40 SIM University 5.2.2 PV module images on HDB roof top Prepared by Maung Maung 41 SIM University 5.2.3 Data collection a) Collection of data from PV modules Data collection has been started since February 2009 and end at September 2009. Alarm and notification are always sent to the company, who monitor the performance of the PV systems during the data collection. The purpose is to ensure that the whole system including the data logger is not unnecessarily disturbed. Therefore, it is necessary to contact the company to ensure that they are aware of that the data collection is ongoing. Daily and monthly out put data from PV modules are stored in the memory of the data logger. In fact the data logger suppose to be able to store for a least two to three months of data. Data were collected at each block by downloading from the data logger to laptop. At the beginning of the project, the data collection was carried out once in every two months. It is observed that some data are missing, meaning it is not complete for one whole month or only a few hours of data for certain days are available. So, starting for May, data collection is made once in a month and still found that it is not complete of data. The missing data is due to some setting at the data logger but the company is not willing to correct it for certain reasons. Eventually, starting from the month of July, data collection is carried out twice in every month and it is quite satisfactory. Figure 5.23.3 Data logger Prepared by Maung Maung 42 SIM University b) Collection of Solar Irradiation data While collecting the data from PV modules, collection of solar irradiation data of Singapore was also carried out. From the web site (provide by NTU, Nangyan Technological University) http://nwsp.ntu.edu.sg/weather/new_portal_intro.htm irradiation data were collected. Several weather stations are installed at some junior colleges and primary schools in Singapore for the purpose of introducing the study of solar energy. Solar irradiation data was collected from 1) St. Nicholas Girl school 2) Raffles Institution 3) Beatty Secondary School 4) GuangYang Primary School However, it is observed that the up to date data are no longer available for most of the institutions close to the project site. Only Raffles institution, which is in Bishan is available for downloading the weather data until the point of writing this report. The table below shows the irradiation data from RI and SNGS of Singapore. Since the daily irradiation data are relatively low, it result a very high efficiency and performance ratio compared to the irradiation data from University of Massachusetts Lowell and it is quite impossible for our project. Table 4.2.3 Irradiation data from RI and SNGS Prepared by Maung Maung 43 SIM University 5.2.4 Problems encountered Accessing the HDB rooftop In Singapore, HDB roof tops are not easily accessible to anyone. Therefore, authorize personnel are required to be there whenever data downloading is carried out. Thus it is always necessary to request someone from the PV company to escort me whenever I need to download the data. But, those staffs are not only responsible for monitoring these PV modules, but also need to carried out their daily work. Hence it is not always possible for them to accompany me whenever I need to access to data logger. This is a kind of barrier to access the PV modules. Another important point is the location, Sembawan, where the PV modules are installed is lightning prone area. So always need to be cautious when there is raining. Missing data As mention above, the data loggers are not able store more than a month or two of data and some time not even a month. Example of missing data can be seen from table 3.2.4, where the data start from morning 11:30 am instead of 7:30 or 8 am. So it is necessary to access the HDB roof top twice a month in order to collect the complete data for one whole month. This is unnecessarily time consuming and require to calibrate with those staffs from PV company for their available timing. Prepared by Maung Maung 44 SIM University Data manipulating, PV This is the most tedious and time consuming process since the downloaded data is in raw, csv format and the interval of 15 minutes daily as shown. The date is not stated there but the file name itself is the date and the block ID is also not known. Extra cautious is necessary not to mess up the data. Table 5.2.4 (a) Out put data form PV module in csv format. Prepared by Maung Maung 45 SIM University This raw data has to be sorted in order to get a readable one as below. Table 6.2.4 (b) Sorted data This is the data belong to block 510B of February 8th, 2009, from one of the three inverters. The data date is the name of the file. From the sorted data, AC and DC power in terms of daily KWh/day is calculated as P V *I 1 * 1000 4 Prepared by Maung Maung 46 SIM University From the daily kWh/day, monthly average, Average kWh/Month is calculated. Likewise, efficiency and performance ratio are also calculated. Data handling need to be vigilant as the individual data file is too huge. Data manipulating, solar Irradiation data Solar irradiation data able to retrieve in Singapore was most like to use for the calculation of efficiency and performance ratio. If the data is reliable and reasonable, it would be much precise than using the global data as there are several weather stations near the project site. The data is downloaded from http://nwsp.ntu.edu.sg/weather/new_portal_intro.htm. After carefully review these data, it is found that the individual data is too low and results a very high efficiency and performance ratio, which is not possible. The worst case is that the data are in 5 minutes interval and there is no option to choose the time interval. That is extremely large and need sort out into daily from that of 5 minutes interval, and then to monthly data. Prepared by Maung Maung 47 SIM University Table 7.2.4 (c) Solar irradiation data of Raffles Institution, September 30th 2009, 4:05 pm to 6:45 pm It can be seen from the above table 3.2.4b, Solar irradiation data of Raffles Institution, September 30th 2009, 4:05 pm to 6:45 pm only. That illustrates only the data of 2 hours and 40 minutes, which is only about one fourth of daily data. Therefore, it can be imagine how huge is the monthly irradiation data to be manipulated. Table below show the example of calculated monthly irradiation data of Raffles Institution, St. Nicolas Girl School and Beatty Secondary school. But they are not useful in this project. Prepared by Maung Maung 48 SIM University Table 8.2.4 (d) Monthly irradiation data comparison Therefore, it is recommended to use certain program to carry out all these time consuming process. Prepared by Maung Maung 49 SIM University 5.3 Measurement of solar Irradiance The amount of sunlight available at a specific location where the PV modules are installed is the most critical information for PV system design. Solar radiance or radiation is an instantaneous power density in the units of kW/m2. The solar radiance varies from 0 kW/m2 at night to a maximum of about 1 kW/m2. It depends on the location and weather. A pyranometer is used to measure the global radiation and a pyrheliometer, which meant for measuring direct radiation. At some of the well established locations, the irradiance data has been collected for more than twenty years. Figure 5.24 shows the pyrheliometer & pyranometer 5.3.1 Analysis on solar Irradiance Pyranometer provide the most accurate measurements of solar radiation data placed at a location for a number of years. It measure the radiation for every few minutes. However, the data generated by this technique is enormous and it is impractical and unnecessary to provide the full data set for each location. The most common theoretically method of reducing the data set is to average the data over the measuring period. This will be in the format of average daily, monthly or yearly radiation data. In this project, the irradiation data used is from University of Massachusetts Lowell (yellow background at the below table). Prepared by Maung Maung 50 SIM University Table 9.3.1 shows the comparison of irradiation data JC- Junior College RI-Raffles Institution SNGS- Saint Nicolas Girl School NASA-National Aeronautics and Space Agency UMass Lowell- University of Massachusetts Lowell From the table above, the data in green background is collected form Raffle’s Institution and Saint Nicolas Girl School of Singapore. However, it is observed that the up to date data are no longer available for most of the institutions close to the project site. Only Raffles institution, which is in Bishan is available for downloading the weather data until at the point of writing this report. Although data are still available from RI, it gives a low irradiation data which result a very high efficiency and performance ratio, which is not possible. The web URL for downloading the weather data in Singapore is http://nwsp.ntu.edu.sg/weather/new_portal_intro.htm The data with yellow background is collected from University of Massachusetts Lowell, Solar Irradiation Database. The data provided is in two formats, one is in 1 year average and the other is in 15 years average format. Besides that, it also provides the average standard deviation of about 0.4. The web URL for downloading the global weather data is http://energy.caeds.eng.uml.edu/fpdb/irrdata.asp The last two rows of data is belong to NASA, dated from 1/1/1983 through 12/31/2005, which is the average of 22 years. It is noticed Prepared by Maung Maung 51 SIM University that the irradiation data of UMass (15 years average) and NASA (22 years average) are reasonably closed. URL of NASA Surface meteorology and Solar Energy: SolarSizer Data http://eosweb.larc.nasa.gov/cgiBin/sse/sizer.cgi?email=maungmaung41%40gmail.com&step=1&lat=1 .18&lon=103.50&ms=1&ds=1&ys=1983&me=12&de=31&ye=2005&d aily=swv_dwn&submit=Submit NASA Log in page: http://eosweb.larc.nasa.gov/cgi-bin/sse/global.cgi?email= Prepared by Maung Maung 52 SIM University 5.4.1 Analysis on Performance Ratio Performance ratio is the relationship between the actual returns and hypothetically potential energy returns of a Photovoltaic system. The quality of the plant configuration can be determined by the performance ratio, because all components and their interaction are included in the calculation of the performance ratio. In this project, performance ratio is calculated as monthly average, Out put Power in kWhr (monthly average) installed kW peak PR= Solar Irradiation (monthly average) * {(cos 7 * 0.6) 0.4} 1 kW / m 2 In fact, tons of work has been carried out in order to estimate the PR. Although the formula given above is in terms of monthly average, the actual computation is base on daily PV out put value. Monthly average is then derived based on the daily result. It is observed that the performance ratio for all 8 blocks shows average of 70% and above. The higher the performance ratio is, the better the system uses its potential. Low PR value indicates production losses due to technical or design problems. The analysis of the systems performance ratio shows that the range of PR is not so wide, which reflect the proper operation of a system from the technical point of view. In reality, the only observation of performance ratio cannot provide a significant image of the system operation. Prepared by Maung Maung 53 SIM University 5.4.2 Comparison of Performance Ratio by month 85.00 130.00 106.07 91.40 97.42 109.90 101.60 90.00 111.58 115.85 Performance ratio for Blk 508A 110.00 Performance ratio 70.00 80.00 65.00 Feb 86.05 76.89 30.00 10.00 71.25 75.90 77.44 83.20 82.34 76.94 73.54 67.46 70.00 73.05 75.00 81.49 85.31 50.00 75.19 Performance ratio 90.00 -10.00 -30.00 Mar Apr May Jun Aug Sep Months Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.25.2 (a) Performance ratio for Blk 508A 109.70 96.96 86.84 88.29 90.00 105.58 101.24 106.86 95.00 110.91 Performance ratio for Blk 508B 130.00 110.00 90.00 88.99 50.00 79.52 72.67 78.98 68.17 74.36 80.34 73.24 81.21 72.79 64.63 70.45 65.00 71.99 70.00 73.91 79.10 75.00 30.00 Performance ratio 70.00 80.00 81.67 Performance ratio 85.00 10.00 -10.00 60.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep M onths Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.26.2 (b) Performance ratio for Blk 508B Prepared by Maung Maung 54 SIM University 93.88 90.00 70.00 81.83 30.00 73.12 69.65 70.36 76.47 79.49 83.23 77.77 80.43 72.47 10.00 -10.00 63.85 65.00 72.10 74.10 70.00 50.00 Performance ratio 81.34 87.36 110.00 75.00 67.97 Performance ratio 80.00 100.87 130.00 110.59 85.00 100.27 112.38 Performance ratio for Blk 508C 60.00 -30.00 Mar Apr May Jun Jul Aug Sep Months Performance Ratio Performance Ratio-stdv Performance Ratio-RI Figure 5.27.2 (c) Performance ratio for Blk 508C 111.34 89.73 110.00 90.00 70.00 80.00 89.20 50.00 73.09 67.25 73.48 68.66 75.86 84.89 30.00 81.32 76.62 71.42 65.00 74.81 70.00 71.59 79.68 75.00 10.00 Performance ratio 86.46 98.03 130.00 85.00 68.62 Performance ratio 90.00 101.80 99.34 95.00 113.45 Performance ratio for Blk 509A -10.00 -30.00 60.00 -50.00 Mar Apr May Jun Jul Aug Sep Months Performance Ratio Prepared by Maung Maung Performance Ratio(-stdv) Performance Ratio-(RI) 55 SIM University Figure 5.28.2 (c) Performance ratio for Blk 509A 113.55 95.63 93.11 91.47 130.00 110.00 90.00 75.00 70.00 86.57 77.36 77.90 71.67 79.64 74.42 83.23 75.88 71.90 82.18 73.66 65.96 50.00 62.85 55.00 57.66 60.00 75.08 65.00 85.18 70.00 50.00 30.00 10.00 Performance ratio Performance ratio 80.00 108.95 85.00 102.45 95.32 90.00 115.68 Performance ratio for Blk 509B -10.00 45.00 40.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.29.2 (e) Performance ratio for Blk 509B Prepared by Maung Maung 56 SIM University 118.44 98.43 90.00 103.92 93.09 105.33 109.27 114.70 95.00 120.43 Performance ratio for Blk 510A 130.00 110.00 90.30 80.69 80.17 85.39 79.79 84.70 77.22 79.27 78.56 30.00 10.00 73.77 65.00 74.07 69.38 70.00 75.63 75.00 87.65 88.68 50.00 Performance ratio 70.00 80.00 78.16 Performance ratio 90.00 85.00 -10.00 60.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.30.2 (f) Performance ratio for Blk 510A 118.23 100.23 90.00 98.54 96.00 114.80 106.28 111.99 95.00 119.80 Performance ratio for Blk 510B 130.00 110.00 90.14 80.55 75.12 81.65 83.75 78.26 87.36 79.64 75.76 76.41 69.50 67.74 65.00 73.84 70.00 85.25 88.27 50.00 75.00 30.00 Performance ratio 70.00 80.00 77.80 Performance ratio 90.00 85.00 10.00 -10.00 60.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.31.2 (g) Performance ratio for Blk 510B Prepared by Maung Maung 57 SIM University 95.00 96.91 110.00 90.00 70.00 85.00 98.89 50.00 78.62 70.25 76.18 78.29 90.83 90.16 70.09 65.00 30.00 71.77 70.00 83.69 75.00 84.87 80.00 60.00 Performance ratio 90.00 75.02 Performance ratio 93.52 91.43 100.00 130.00 108.68 104.34 105.00 120.68 Performance ratio for Car Park 10.00 -10.00 -30.00 Apr May Jun Jul Aug Sep Months Performance Ratio Performance Ratio(-stdv) Performance Ratio-(RI) Figure 5.32.2 (h) Performance ratio for car park Prepared by Maung Maung 58 SIM University 5.4.3 Analysis on Efficiency The efficiency of the whole system is considered as all component of a photovoltaic system. It provide the information between the ratio of the useful electrical power produced by a photovoltaic system at any instant to the power of the sunlight striking the solar array. It is the ratio of output power (or energy) to input power (or energy) expressed in percentage. In Photovoltaic a criterion to measure the quality of the PV-system or PV-component. Efficiency in this project is calculated in terms of monthly average. Efficiency= Out put power in kWhr (monthly average) Solar irradiation(monthly average) * total mod ule area *{(cos 7 * 0.6) 0.4} Efficiency is actually calculated based on daily data and then it was expressed in terms of monthly average. The reason behind this is the volume of data generated will be too huge if daily data has to be presented. Converted It is observed that the efficiency conversion is just 8% and some time it reaches 9% for all the 8 blocks, which mean the conversion of the available solar energy into usable electricity is 8-9%. This is an acceptable conversion so long as PV is concerned today. Prepared by Maung Maung 59 SIM University 5.4.4 Comparison on Efficiency by month Efficiency for Blk 508A 12.20 10.67 9.56 9.70 11.62 12.94 11.10 9.00 20.00 12.21 9.50 15.00 10.00 0.00 8.00 6.50 8.75 8.69 8.89 7.50 8.00 8.18 8.84 8.05 8.17 8.74 9.20 7.75 7.11 7.00 8.60 8.99 7.50 -5.00 -10.00 Efficiency 5.00 7.92 Efficiency 8.50 -15.00 -20.00 -25.00 6.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.33.4 (a) Efficiency for Blk 508A Efficiency for Blk 508B 12.20 10.67 9.56 9.70 11.62 12.94 11.10 9.00 20.00 12.21 9.50 15.00 10.00 0.00 8.00 6.50 8.75 8.69 8.89 7.50 8.00 8.18 8.84 8.05 8.17 7.75 8.74 9.20 -5.00 7.11 7.00 8.60 8.99 7.50 -10.00 Efficiency 5.00 7.92 Efficiency 8.50 -15.00 -20.00 -25.00 6.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.34.4 (b) Efficiency for Blk 508B Prepared by Maung Maung 60 SIM University Efficiency for Blk 508C 11.22 10.33 10.00 9.00 9.60 11.03 12.17 20.00 13.61 9.50 15.00 10.00 0.00 6.50 9.00 8.05 7.74 -10.00 -15.00 -20.00 7.03 7.66 7.9 8.41 8.75 9.16 7.48 7.00 -5.00 8.56 7.50 8.60 9.20 8.00 Efficiency 5.00 8.15 Efficiency 8.50 -25.00 6.00 -30.00 Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.35.4 (c) Efficiency for Blk 508C 11.64 9.87 9.51 10.70 11.20 10.90 11.00 13.74 Efficiency for Blk 509A 20.00 10.00 10.00 0.00 9.82 9.34 8.35 8.04 7.40 8.07 8.90 8.43 7.88 9.12 -20.00 7.40 6.00 7.55 7.00 8.5 8.00 Efficiency -10.00 8.23 Efficiency 9.00 -30.00 -40.00 5.00 -50.00 Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.36.4 (d) Efficiency for Blk 509A Prepared by Maung Maung 61 SIM University 11.87 10.52 10.31 10.06 11.99 11.20 11.55 9.50 10.00 9.00 5.00 8.50 0.00 8.00 9.53 8.51 7.89 8.57 8.09 8.83 9.16 8.30 8.43 9.02 9.37 7.00 6.00 5.50 -10.00 -15.00 -20.00 6.34 6.92 6.50 8.70 9.40 -5.00 7.50 8.26 Efficiency 15.00 Efficiency 10.00 12.72 Efficiency for Blk 509B -25.00 5.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.37.4 (e) Efficiency for Blk 509B 12.38 10.83 11.06 10.24 12.02 10.00 11.59 20.00 14.30 10.50 13.25 PEfficiency for Blk 510A 15.00 10.00 0.00 9.00 9.94 8.88 8.82 -10.00 -15.00 -20.00 8.12 8.40 8.72 8.15 8.68 9.32 9.47 10.03 9.30 7.63 7.50 8.32 8.00 9.76 8.50 -5.00 Efficiency 5.00 8.60 Efficiency 9.50 -25.00 7.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.38.4 (f) Efficiency for Blk 510A Prepared by Maung Maung 62 SIM University Efficiency for Blk 510B 12.36 11.03 10.84 10.00 10.24 11.60 12.63 20.00 13.56 13.19 10.50 15.00 10.00 0.00 9.00 9.92 8.86 8.27 8.51 -10.00 -15.00 -20.00 -25.00 7.45 7.50 8.98 9.29 9.32 8.70 8.13 8.56 8.00 8.88 9.10 9.51 9.76 -5.00 8.50 Efficiency 5.00 9.71 Efficiency 9.50 7.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.39.4 (g) Efficiency for Blk 510B 11.04 10.41 11.00 10.65 20.00 12.38 11.50 11.88 12.00 13.74 Efficiency for Car Park 15.00 10.00 10.50 8.95 8.00 8.60 7.98 8.17 7.00 8.54 7.50 9.53 8.00 -10.00 8.92 8.50 11.26 -5.00 10.27 9.00 10.34 0.00 9.67 Efficiency 9.50 Efficiency 5.00 10.00 -15.00 -20.00 -25.00 6.50 6.00 -30.00 Apr May Jun Jul Aug Sep Months Efficiency Efficiency (- stdv) Efficiency (RI) Figure 5.40.4 (h) Efficiency for car park Prepared by Maung Maung 63 SIM University 5.4.5 Comparison on Power(kWh) by month 3.45 3.11 3.166 3.29 3.37 3.33 40.00 3.66 Power generation for blk 508A 4.00 35.00 0.00 30.00 -8.00 34.52 31.07 31.66 20.00 32.85 33.67 33.31 25.00 36.60 Power -4.00 -12.00 15.00 -16.00 10.00 -20.00 Feb Mar Apr May Jun Aug Sep Months Power (Monthly Avg) Power (KWhr/KWp) Figure 5.41.5 (a) power out put for BLK 508A 3.57 3.17 2.93 3.06 3.16 3.36 3.19 40.00 3.50 Power generation for blk 508B 4.00 35.00 0.00 30.00 35.70 31.69 29.32 30.55 31.56 33.55 20.00 31.91 25.00 35.04 Power -4.00 -8.00 -12.00 15.00 -16.00 10.00 -20.00 Feb Mar Apr May Jun Jul Aug Sep Months Power (Monthly Avg) Prepared by Maung Maung Power (KWhr/KWp) 64 SIM University Figure 5.42.5 (b) power out put for BLK 508B 3.28 3.07 2.75 3.02 3.31 3.32 40.00 3.36 Power generation for blk 508C 4.00 35.00 0.00 -4.00 32.83 30.68 27.46 30.23 33.06 20.00 33.23 25.00 33.56 Power 30.00 -8.00 -12.00 15.00 -16.00 10.00 -20.00 Mar Apr May Power (Monthly Avg) Jun Jul Aug Sep Months Power (KWhr/KWp) Figure 5.43.5 (c) power out put for BLK 508C 3.41 2.93 2.92 3.39 3.04 3.29 40.00 3.28 Power generation for blk 509A 4.00 35.00 0.00 30.00 34.06 29.32 29.19 33.92 30.43 20.00 32.92 25.00 33.88 Power -4.00 -8.00 -12.00 15.00 -16.00 10.00 -20.00 Mar Apr May Power (Monthly Avg) Jun Jul Aug Sep Months Power (KWhr/KWp) Figure 5.44.5 (d) power out put for BLK 509A Prepared by Maung Maung 65 SIM University 3.47 3.20 3.16 3.17 3.26 3.40 2.85 3.65 Power generation for blk 509B 40.00 4.00 35.00 0.00 30.00 -8.00 34.73 31.25 31.64 31.65 32.57 20.00 33.95 28.47 25.00 36.55 Power -4.00 -12.00 15.00 -16.00 10.00 -20.00 Feb Mar Apr May Jun Jul Aug Sep Months Power (Monthly Avg) Power (KWhr/KWp) Figure 5.45.5 (e) power out put for BLK 5089b 3.62 3.21 3.39 3.22 3.15 3.62 3.43 40.00 3.80 Power generation for blk 510A 6.00 2.00 35.00 -2.00 -6.00 36.23 32.16 33.92 32.21 20.00 31.49 36.21 34.26 -10.00 25.00 38.05 Power 30.00 -14.00 -18.00 -22.00 15.00 -26.00 10.00 -30.00 Feb Mar Apr May Jun Jul Aug Sep Months Power (Monthly Avg) Power (KWhr/KWp) Figure 5.46.5 (f) power out put for BLK 510A Prepared by Maung Maung 66 SIM University 3.33 3.28 3.33 3.322 3.43 3.52 3.34 40.00 3.79 Power generation for blk 510B 5.00 0.00 35.00 -5.00 30.00 33.26 32.76 33.26 34.32 35.22 -15.00 33.22 20.00 33.45 25.00 37.87 Power -10.00 -20.00 -25.00 15.00 -30.00 -35.00 10.00 Feb Mar Apr May Jun Jul Aug Sep Months Power (Monthly Avg) Power (KWhr/KWp) Figure 5.47.5 (g) power out put for BLK 510B Power generation for Car Park 5.00 3.76 3.15 3.00 Power 15 2.77 4.00 2.97 3.61 20 3.46 25 2.00 Jun 10.41 May 9.14 12.41 Apr 9.79 11.91 5 11.41 10 Jul Aug Sep 1.00 0.00 0 Months Power (Monthly Avg) Power (KWhr/KWp) Figure 5.48.5 (h) power out put for car park Prepared by Maung Maung 67 SIM University CHAPTER 6 PV MODULES and ARRAYS Prepared by Maung Maung 68 SIM University 6.1 PV Modules and Arrays Figure 6.49 PV modules and Arrays A PV module consists of individual solar cells, which are connected electrically to increase their power output. In order to protect the modules from environment in which they operate they are packaged and the user is also protected from electrical shock. It is a matter of concern how solar cells are encapsulated into PV modules and the issues arises as a result of interconnection and encapsulation. Then the module is used alone or electrically connected with similar modules to form a photovoltaic array. A number of modules can be connected in a series strings to increase the voltage and in parallel to increase the current. 6.2 Module structure The modules used in this project are 72 interconnected individual solar cells. They are interconnected and encapsulated into a single, longlasting, stable unit. The main purpose is to protect them and their interconnecting wires from the environment. Since they are relatively thin and are prone to mechanical damage unless protected. Moreover, the metal grid on the top surface and the wires interconnecting the individual solar cells may be corroded by water or water vapor. So the two main reasons of encapsulation are to prevent from mechanical damage and to prevent from water or water vapor from corroding the electrical contacts. There are several types of PV modules and solar cells and the structure is often different for different applications. For instance, bulk silicon solar cells are usually rigid with glass front surfaces whereas amorphous silicon solar cells are encapsulated into a Prepared by Maung Maung 69 SIM University flexible array. Module lifetimes and warranties on PV modules are often about 20 years. The figure below shows typical schematic of module construction for solar cell. Figure 6.50 schematic of module construction As shown in the above figure, PV modules consist of a) a transparent top surface, which is usually glass, b) an encapsulant, which is EVA (ethyl vinyl acetate) and c) a rear layer and a frame around the outer edge, which is Tedlar. Tedlar has flammability-lowering property and mainly used in interior coating of airplane and photovoltaic module back sheets. It is also used in things like raincoats, and metal sheeting. EVA has little or no odor and is comparable with vinyl and rubber products in many electrical applications. 6.3 Modules interconnection In order to provide the required output power a number of cells have to be electrically interconnected. There are two basic connection modes, series connection and parallel connection. In series connection, the top contact of each cell is connected to the back contact of next cell. In parallel connection, all the top contacts are connected together and are all the bottom contacts. Prepared by Maung Maung 70 SIM University 6.3.1 Series connection Figure 4.3.1 shows the series connection of three cells and the resultant group of connected cells is usually referred as a series string. The output current is equivalent to that of a single cell but the voltage is increased in the factor of 3 X V(of individual cell). Figure 6.51.1 series connection of cells and I-V characteristic 6.3.2 Mismatch Effects in series connection Miss match loss arises when there is a difference in the maximum out put of the cells and the actual out put. The possible root course of having mismatch losses are1) Interconnection of solar cells or 2) Modules which do not have identical properties or 2) Module experience different conditions from one another. Exactly the same effects and graph will exhibit in modules when using the cells having that mismatch effects. It is important to have cells well match in series string especially in terms of current. Under worst-case conditions the output of the entire Prepared by Maung Maung 71 SIM University PV module is determined by the solar cell with the lowest output. For instance, in a module when one of the solar cells is shaded, then the string will operate at their lower current level and the remaining cell will not be operating at their maximum power point. performance cell rather than powering the load. This could happen due to the partial shading. 6.3.3 Parallel connection Figure below shows the parallel connection of 3 solar cells. Current is equivalent to the addition of the current of each cell 3 X I (of individual cell), while the voltage is same as that of a single cell. Figure 6.52.3 Parallel connection of cells and I-V characteristic 6.3.4 Mismatch Effects in parallel connection In parallel connection, voltage is the important parameter since all the cells must have the same operating voltage. It is important to have the cells well matched in order to generate the maximum power out put. Voltage mismatch in parallel connection, the affected cell actually reduces Voc below that for good cell by itself. Prepared by Maung Maung 72 SIM University 6.3.5 Hot-Spot Heating Hot-spot heating happens when there is one low current solar cell in a string as shown in the figure below. Figure 6.53.5 shows the shaded cell When a large number of series connected cells cause a large reverse bias across the shaded cell will result in a large power dissipation in the poor cell. This "hot-spots", will cause cell or glass cracking, melting of solder and degradation of the solar cell. Figure 6.54.5 (a) shows the crack cell due to the hot spot Prepared by Maung Maung 73 SIM University CHAPTER 7 PV MARKET Prepared by Maung Maung 74 SIM University 7.1 Solar PV market and Potential The market for electricity generation from solar is booming. A world wide shortage of solar grade silicon in 2007 becomes constrain for PV market. However, the market still continues to grow in terms of capacity as well as production and it grows more than 30% yearly. Worldwide cumulative install capacity of solar PV system had reached more than 9200MW in the end of year 2007. In 2000, the cumulative installed capacity was only 1200 MW. First edition of electricity generation from PV was published in 2001. Since then, the global market for PV has continued to develop more than forecast rate. Figure below shows the forecast for solar generation. Table 7.1.10past and prediction of future PV installation Development on solar PV has exceeded expectation in some countries. However, there are still some countries whose development rate on PV is slower than the forecast. One of the top countries which consistently perform at its projected rate is Germany. Other countries in Asia Pacific regions such as China, Australia, India, Japan and South Korea are also showing their determination to develop the solar power generation. Even though growing solar market in OECD, organization for Economic Co-operation and Development nations & Asia pacific region, the solar market in South-east Asia countries is still yet to be developed. Prepared by Maung Maung 75 SIM University Figure below shows the snapshot of PV market growth in Asia Pacific region. Figure 7.55 PV market growth in Asia Pacific region Prepared by Maung Maung 76 SIM University Figure 7.56(a) APAC represent 20% of worldwide market APAC represent 20% of worldwide market as shown above. Prepared by Maung Maung 77 SIM University Figure below shows the forecast of annual installed PV capacity in Singapore. It is expected the market will grow significantly. Figure 7.57(b) shows forecast of PV installed in Singapore Figure 7.58 (c)24.3 MWp solar park in Dong Yang Sinan of S.Korea Prepared by Maung Maung 78 SIM University Figure 7.59 (d) 1.3 MWp solar plant in Saba, Malaysia Ref: Conergy APAC & ME, semi Prepared by Maung Maung 79 SIM University 7.2 Challenges for PV market growth in South-East Asia In this section, we are going to discuss the challenges for growth of PV market in Southeast Asia in all aspects such as financial, political and educational. Financial Aspect Solar electricity has become cost competitive in some stand alone applications where no access to public grid is available. However, compare to public grid electricity, electricity generation cost for PV is still higher in general as the capital cost of PV is relatively high. Political Aspect There is no private market for solar PV and all the projects are solely driven by government. On top of this, bureaucratic barrier such as lengthy and un-transparent tender process are also some of the challenges for PV market. Educational Aspect One of the major issues for electricity generation with PV is lack of educational components. In many rural electrification projects, shortage of education component is the main drawback factor. Moreover, rural users often abuse the system as they don’t have sufficient knowledge on PV. Imperfect or not following the best practice for installation procedure and design are also the challenge for PV system. 7.3 Recommendations for growth of PV Market in Southeast Asia Financial support in order to develop a strong PV industry. Continuous development and technical innovations such as PV systems’ lifetime extensions to reduce the cost of PV production. Eliminate taxing on solar related equipments and offer an opportunity for private market to invest in PV projects. Reduce bureaucratic barrier by shortening the project tender process. Provide sufficient educational components in rural PV projects and make sure that stakeholders run these projects not rural user. Ensure to follow the best practice as long as PV project is concern and make the guide book available. Prepared by Maung Maung 80 SIM University Make an opportunity to improve local economy with solar PV projects and create jobs Prepared by Maung Maung 81 SIM University CHAPTER 8 CONCLUSION and RECOMMENDATION Prepared by Maung Maung 82 SIM University Advantage of solar energy is that it converts the source energy into usable energy in only one step although it has lower conversion efficiency compared to the other energy conversions. Other forms of energy conversion for instance, fossil fuel power plants, first need to convert chemical energy stored in coal into thermal energy, heat, then convert this into mechanical energy such as turning a turbine, then, to electrical energy. Same thing goes to automobile where chemical energy is stored in gasoline and then converted to mechanical energy, which is about 25%. This process of energy conversion in several steps can make the overall conversion efficiency much lower. Other advantage of solar energy systems is that they produce electricity without any pollution and also no moving parts to wear out, break down and easy to replace. Analysis shows that individual systems perform consistently, but often not as predicted, some of the PV systems shows quite different from each other for certain months. It is admittedly imperfect. It is observed that the efficiency conversion is just 8% and some time it reaches 9% for all the 8 blocks, which mean the conversion of the available solar energy into usable electricity is 8-9%. This is an acceptable conversion so long as PV is concerned today. For the performance ratio, all 8 blocks shows average of 70% and above. The higher the performance ratio is, the better the system uses its potential. Low PR value indicates production losses due to technical or design problems. The analysis of the systems performance ratio shows that the range of PR is not so wide, which reflect the proper operation of a system from the technical point of view (such as component degradation or low components efficiency). Although all the blocks show reasonably good data, it is observed that both efficiency and performance ratio for all blocks during March in relatively low compared to the rest. Since data from the rest of the moths are good, it can confirm that PV modules are working fine. After investigation, it is found that there is a problem in data transmission for that month of March for all the blocks. Thus we did not received good data. To increase the public awareness, Singapore should put more attention on solar energy such as installing weather stations with more accurate measuring devices, public demonstration projects. Prepared by Maung Maung 83 SIM University In reality, the only observation of performance ratio cannot provide a significant image of the system operation, it is required to find out more factors to have a better analysis. Therefore, improve the process of data manipulation, it is highly recommended to use a software or program to minimize the processing time and maximize the accuracy. Prepared by Maung Maung 84 SIM University REFERENCES [1] Stuart R Wenham, Martin A Green, Muriel E. Watt and Richard Corkish, Applied Photovoltaics, second edition [2] Basic Photovoltaic Principles and Methods, Solar Energy Research Institute [3] S.O. Kasap, Principle of Electronics Materials and Devices, Third edition. [4] Building and Construction Authority, Singapore, Green handbook for Photovoltaic (PV) systems in buildings, 2008. [5] Tomas Markvart, Photovoltaic Solar Energy Conversion, 2002 [6] Solar Energy International, Photovoltaics: Design and Installation Manual, 2004. [7] Energie, Solar City Guide, 2001 [8] Energy Market Authority, Singapore, Handbook for Photovoltaic (PV) systems, fourth edition. [9] Florida Solar Energy Center, Installing Photovoltaic Systems, May 1999 [10] Florida Solar Energy Center, Procedures for Photovoltaic System Design Review and Approval, May 2005 [11] Tomas Markvart, Solar Electricity [12] Richard J. Komp, Ph.D., Practical Photovoltaics, Electricity from Solar Cells [13] Photovoltaics CDROM; http://pvcdrom.pveducation.org/ [14] WRDC Data Access ; http://wrdc-mgo.nrel.gov/html/get_dataap.html [15] NASA Surface meteorology and Solar Energy: SolarSizer Data; http://eosweb.larc.nasa.gov/cgibin/sse/sizer.cgi?email=maungmaung41%40gmail.com&step=1&lat=1 Prepared by Maung Maung 85 SIM University +30&lon=103+50&ms=1&ds=1&ys=1983&me=12&de=31&ye=2005& daily=swv_dwn&submit=Submit [16] NASA Surface meteorology and Solar Energy: Log In / Register; http://eosweb.larc.nasa.gov/cgi-bin/sse/global.cgi?email= [17] Solar cell; http://en.wikipedia.org/wiki/Solar_cell [18] NASA home page; http://www.nasa.gov/ [19] Solar Irradiation Database; http://energy.caeds.eng.uml.edu/fpdb/Irrdata.asp [20] Solar Energy Industries Association http://www.seia.org/ [21] Solar Generation V – 2008; http://www.greenpeace.org/international/press/reports/solargeneration-v-2008# [22] National Weather Study Project; http://nwsp.ntu.edu.sg/weather/new_portal_intro.htm [23] IEA Photovoltaic Power Systems Programme; http://www.ieapvps.org/ [25] Photovoltaic lexicon; http://www.solarone.de/photovoltaic_lexicon.html [26] solar energy technologies http://www1.eere.energy.gov/solar/pdfs/set_myp_20072011_proof_1.pdf [27]Issues and Challenges for PV Market Development www.semiconsingapore.org/.../cms/groups/.../ctr_029937.pdf Prepared by Maung Maung 86 SIM University APPENDIXES 1. PV module technical specification Prepared by Maung Maung 87 SIM University 2. Measurement data for individual block Daily power out put, performance ratio and efficiency for individual block from February 2009 to September 2009 are shown below. For efficiency and performance ratio, there are two graphs for each block for every month, one is using the monthly irradiation data and the other is monthly irradiation minus standard deviation. Prepared by Maung Maung 88 SIM University Power in kWh(Daily) for BLK 508A Feb 2009 50.00 46.79 46.72 48.74 42.32 42.81 39.96 40.00 39.46 36.47 30.05 30.00 27.83 26.51 24.96 23.21 20.00 10.00 2/28/2009 2/27/2009 2/26/2009 2/25/2009 2/24/2009 2/23/2009 2/22/2009 2/21/2009 2/20/2009 2/19/2009 2/18/2009 2/17/2009 2/16/2009 2/15/2009 0.00 Power in KWh(Daily) for Blk 508A Feb 2009 Efficiency (Daily Average) for Blk 508A Feb 2009 12.50 11.98 12.00 11.02 10.56 10.58 10.85 10.98 10.25 9.57 10.12 9.68 9.35 9.03 8.92 8.24 7.71 6.40 5.95 28-Feb 27-Feb 5.25 25-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 5.64 17-Feb 16-Feb 15-Feb 6.79 6.29 5.99 26-Feb 7.14 6.80 Efficiency (Daily) for Blk 508A Feb 2009 Prepared by Maung Maung 89 SIM University Performance Ratio (Daily Average) for Blk 508A Feb 2009 113.60 109.06 108.88 100.12 95.97 99.78 98.63 96.13 93.14 91.96 87.95 86.94 84.99 82.09 81.06 74.91 70.03 64.87 61.79 61.73 58.17 57.18 54.46 54.10 51.27 28-Feb 27-Feb 26-Feb 25-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 47.68 Performance ratio (Daily Average) for Blk 508A Feb 2009 Pow er in KWh (daily) for Blk 508B Feb 2009 48.87 47.08 50.00 42.63 39.23 40.00 40.55 40.14 37.01 35.49 33.6033.60 31.24 KWhr 42.9543.20 41.49 31.05 28.58 25.95 30.00 23.66 22.19 20.00 12.31 10.00 2/28/2009 2/27/2009 2/26/2009 2/25/2009 2/24/2009 2/23/2009 2/22/2009 2/21/2009 2/20/2009 2/19/2009 2/18/2009 2/17/2009 2/16/2009 2/15/2009 2/14/2009 2/13/2009 2/12/2009 2/11/2009 2/10/2009 2/9/2009 2/8/2009 2/7/2009 0.00 Power in KWh(Daily) for Blk 508B Feb 2009 Prepared by Maung Maung 90 SIM University Efficiency (Daily Average) for Blk 508B Feb 2009 12.53 12.07 11.05 10.93 10.64 10.40 10.06 9.64 9.71 9.38 8.87 8.62 11.08 11.02 10.64 9.17 9.10 8.02 8.37 7.96 7.60 7.33 7.06 7.02 6.66 6.46 6.07 5.87 5.69 5.35 5.02 3.16 2.78 Efficiency (Daily Average) for Blk 508B Feb 2009 Performance Ratio (Daily Average) for Blk 508B Feb 2009 113.89 109.72 100.38 99.36 96.70 96.71 94.51 91.44 87.57 85.23 80.60 78.32 100.11 100.69 88.23 82.46 76.03 72.90 72.38 69.03 66.61 64.18 63.79 58.71 60.49 55.15 53.32 51.72 48.61 45.58 28.69 25.29 Performance ratio (Daily Average) for Blk 508B Feb 2009 Prepared by Maung Maung 91 28-Feb 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 24.39 21.50 8-Feb 7-Feb 86.27 83.30 82.71 78.32 72.82 69.03 93.56 88.75 28-Feb 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 2.68 2.37 8-Feb 7-Feb 9.49 9.07 8.62 8.01 7.60 10.30 9.77 SIM University Power in kWh (Daily) for BLK 509B FEB 2009 47.93 50.00 47.33 49.19 42.91 43.27 41.14 40.25 40.00 39.87 36.64 35.20 33.04 30.67 30.27 27.98 27.64 30.00 25.03 22.97 20.00 10.00 2/28/2009 2/27/2009 2/26/2009 2/25/2009 2/24/2009 2/23/2009 2/22/2009 2/21/2009 2/20/2009 2/19/2009 2/18/2009 2/17/2009 2/16/2009 2/15/2009 2/14/2009 2/13/2009 2/12/2009 2/11/2009 0.00 Power in KWh(Daily) for Blk 509B Feb 2009 Efficiency (Daily Average) for Blk509B Feb 2009 12.29 12.14 10.83 10.70 10.32 12.62 11.12 11.01 9.70 9.10 11.10 10.55 9.78 9.30 9.03 8.47 7.96 7.76 5.89 5.19 26-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 13-Feb 12-Feb 11-Feb 6.42 5.66 25-Feb 6.32 6.25 6.84 23-Feb 7.17 7.09 22-Feb 7.47 21-Feb 7.86 6.93 Efficiency (Daily Average) for Blk 509B Feb 2009 Prepared by Maung Maung 92 SIM University Performance Ratio (Daily Average) for Blk 509B Feb 2009 111.70 110.30 98.45 93.81 114.64 101.05 97.22 88.15 70.54 58.33 51.41 53.52 47.18 25-Feb 23-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 62.18 22-Feb 65.20 57.47 64.41 56.77 13-Feb 11-Feb 84.51 82.03 72.30 67.88 12-Feb 71.47 63.00 95.88 88.89 Performance Ratio (Daily Average) for Blk 509B Feb 2009 Power in kWh (Daily) for BLK 510A FEB 2009 52.31 49.68 50.00 49.54 51.03 45.21 45.03 44.97 43.22 40.28 40.00 37.57 35.70 32.68 30.69 29.63 32.30 27.44 30.00 25.85 20.00 11.77 10.00 2/28/2009 2/27/2009 2/26/2009 2/25/2009 2/24/2009 2/23/2009 2/22/2009 2/21/2009 2/20/2009 2/19/2009 2/18/2009 2/17/2009 2/16/2009 2/15/2009 2/14/2009 2/13/2009 2/12/2009 2/11/2009 2/10/2009 2/9/2009 0.00 Power in KWh (Daily) for Blk 510A Feb 2009 Prepared by Maung Maung 93 26-Feb 82.68 77.02 100.86 100.01 SIM University Efficiency (Daily Average) for Blk 510A Feb 2009 13.41 12.74 11.82 11.59 10.33 13.09 12.70 11.23 11.54 11.20 11.55 10.22 10.18 8.38 11.08 10.17 9.77 9.63 9.15 9.10 11.53 8.49 8.07 8.28 7.87 7.60 7.39 7.30 6.94 6.70 7.04 6.63 6.20 5.84 3.02 2.66 Efficiency (Daily Average) for Blk 510A Feb 2009 Performance Ratio (Daily Average) for Blk 510A Feb 2009 121.91 115.79 107.45 105.37 93.88 115.46 102.05 101.76 118.94 104.84 92.87 104.94 92.49 104.81 100.73 92.38 88.78 87.56 83.20 82.74 76.16 77.17 73.33 71.53 69.06 67.13 63.05 60.87 75.27 66.35 63.95 60.26 56.36 53.11 27.42 24.17 Performance Ratio (Daily Average) for Blk 510A Feb 2009 Prepared by Maung Maung 94 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 0.000.00 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 0.000.00 SIM University Power in kWh (Daily) for BLK 510B 2009 Feb 2009 52.40 50.79 49.15 50.00 48.74 44.69 43.60 39.74 44.57 42.76 41.85 39.74 40.00 38.21 36.82 34.78 32.33 32.02 30.00 29.50 30.00 27.02 24.99 20.00 11.59 10.00 2/28/2009 2/27/2009 2/26/2009 2/25/2009 2/24/2009 2/23/2009 2/22/2009 2/21/2009 2/20/2009 2/19/2009 2/18/2009 2/17/2009 2/16/2009 2/15/2009 2/14/2009 2/13/2009 2/12/2009 2/11/2009 2/10/2009 2/9/2009 2/8/2009 0.00 Power in KWh (Daily) for Blk 510B Feb 2009 Efficiency (Daily Average) for Blk 510B Feb 2009 13.44 13.03 12.61 12.50 11.85 11.18 10.19 8.98 10.19 9.86 8.98 11.11 11.02 11.48 11.46 10.10 11.43 10.97 10.08 10.73 9.66 9.44 9.46 8.92 8.29 8.32 7.86 7.69 7.57 7.31 6.78 6.67 9.80 8.64 8.21 7.24 6.93 6.41 5.65 6.11 Efficiency (Daily Average) for Blk 510B Feb 2009 Prepared by Maung Maung 95 28-Feb 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 8-Feb 2.97 2.62 SIM University Performance Ratio (Daily Average) for Blk 510B Feb 2009 122.14 118.37 114.56 113.59 107.65 101.63 92.62 81.64 92.62 100.97 104.33 104.15 103.89 91.80 89.57 81.64 100.12 99.65 91.56 97.55 87.83 85.82 89.05 85.98 81.07 75.36 75.64 71.45 78.49 74.63 69.92 68.76 66.42 61.62 60.61 65.78 62.98 58.24 51.33 55.51 28-Feb 27-Feb 26-Feb 25-Feb 24-Feb 23-Feb 22-Feb 21-Feb 20-Feb 19-Feb 18-Feb 17-Feb 16-Feb 15-Feb 14-Feb 13-Feb 12-Feb 11-Feb 10-Feb 9-Feb 8-Feb 27.02 23.82 Performance Ratio (Daily Average) for Blk 510B Feb 2009 Power in KWh (Daily) for Blk 508A, March 2009 54.57 52.71 49.62 50.00 46.09 41.29 38.96 40.00 37.26 36.67 35.28 33.79 33.47 31.18 30.27 30.00 26.60 KWhr 28.42 26.61 25.59 25.07 22.24 20.51 20.00 17.29 15.23 14.56 10.00 3/26/2009 3/25/2009 3/24/2009 3/23/2009 3/22/2009 3/21/2009 3/20/2009 3/19/2009 3/18/2009 3/17/2009 3/16/2009 3/15/2009 3/14/2009 Dates 3/13/2009 3/12/2009 3/11/2009 3/10/2009 3/9/2009 3/8/2009 3/7/2009 3/6/2009 3/5/2009 3/4/2009 3/3/2009 3/2/2009 3/1/2009 0.00 Power in KWh (Daily) for Blk 508A Mar 2009 Prepared by Maung Maung 96 SIM University Efficiency (Daily Average) for Blk 508B Mar 2009 13.63 13.26 12.51 12.16 11.75 12.05 11.20 11.06 10.27 6.22 5.70 6.90 6.33 6.46 5.93 6.09 5.59 3.70 3.39 24-Mar 23-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 15-Mar 3.54 3.24 14-Mar 13-Mar 4.20 3.85 12-Mar 10-Mar 8-Mar 4.98 4.57 7-Mar 6-Mar 5-Mar 4-Mar 2-Mar 8.21 7.35 7.53 6.75 25-Mar 6.46 5.93 5.40 4.96 1-Mar 10.03 9.20 8.91 8.17 22-Mar 9.05 8.30 11-Mar 8.57 8.13 7.86 7.58 7.46 6.95 9.46 8.68 26-Mar 12.80 Efficiency (Daily Average) for Blk 508B Mar 2009 Performance Ratio (Daily Average) for Blk 508B Mar 2009 123.90 120.47 113.65 110.51 109.54 101.76 100.48 93.35 74.59 66.83 68.43 62.74 61.30 58.75 57.55 53.89 55.35 50.77 23-Mar 22-Mar 21-Mar 20-Mar 18-Mar 17-Mar 16-Mar 15-Mar 24-Mar 33.63 30.85 32.14 29.48 14-Mar 13-Mar 38.17 35.02 12-Mar 10-Mar 45.28 41.54 8-Mar 7-Mar 6-Mar 80.97 74.27 56.51 51.84 49.11 45.05 11-Mar 58.72 53.86 91.15 83.61 19-Mar 82.26 75.46 5-Mar 4-Mar 2-Mar 1-Mar 77.89 73.90 68.84 67.79 71.45 63.15 86.01 78.90 Performance Ratio (Daily Average) for Blk 508B Mar 2009 Prepared by Maung Maung 97 26-Mar 106.74 25-Mar 116.36 SIM University Power in kWh (Daily) for BLK 508C MAR 2009 54.73 52.82 49.14 50.00 45.84 39.17 38.80 40.00 37.14 35.78 33.49 30.00 26.28 26.05 33.53 29.81 28.21 26.38 25.10 21.72 26.83 20.29 20.00 16.86 14.20 10.00 3/26/2009 3/25/2009 3/24/2009 3/23/2009 3/22/2009 3/21/2009 3/20/2009 3/19/2009 3/18/2009 3/17/2009 3/16/2009 3/15/2009 3/14/2009 3/13/2009 3/12/2009 3/11/2009 3/10/2009 3/9/2009 3/8/2009 3/7/2009 3/6/2009 3/5/2009 3/4/2009 3/3/2009 3/2/2009 3/1/2009 0.00 Power in KWh (Daily) for Blk 508C Mar 2009 Efficiency (Daily Average) for Blk 508C Mar 2009 13.66 13.29 12.83 12.53 12.20 11.77 11.94 11.14 10.95 10.21 8.14 7.24 7.47 6.64 6.85 6.29 6.52 5.98 6.41 5.88 Efficiency (Daily Average) for Blk 508C Mar 2009 Prepared by Maung Maung 98 26-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 15-Mar 3.45 3.16 14-Mar 13-Mar 4.10 3.76 12-Mar 11-Mar 10-Mar 4.93 4.52 8-Mar 7-Mar 9.02 8.28 6.10 5.59 5.28 4.84 6-Mar 5-Mar 4-Mar 6.33 5.80 2-Mar 1-Mar 6.39 5.86 9.52 8.73 9.43 8.65 8.69 8.14 7.97 7.46 SIM University Performance Ratio (Daily Average) for Blk 508C Mar 2009 124.18 120.82 113.91 110.83 108.50 101.19 92.83 74.02 65.80 67.90 60.36 62.28 57.13 59.23 54.33 58.24 53.43 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 15-Mar 31.35 28.76 14-Mar 13-Mar 37.22 34.14 12-Mar 11-Mar 10-Mar 8-Mar 44.79 41.09 7-Mar 6-Mar 82.01 75.23 55.41 50.83 47.95 43.99 5-Mar 4-Mar 57.50 52.75 2-Mar 1-Mar 58.03 53.23 86.48 79.33 85.66 78.58 78.99 73.95 72.46 67.83 99.53 Performance Ratio (Daily Average) for Blk 508C Mar 2009 Power in kWh (Daily) for BLK 509A Mar 2009 53.82 52.05 50.13 47.95 50.00 40.00 33.37 30.85 36.44 38.22 35.28 30.00 33.53 29.76 27.60 26.48 25.74 21.52 20.11 20.00 13.16 10.00 3/26/2009 3/25/2009 3/24/2009 3/23/2009 3/22/2009 3/21/2009 3/20/2009 3/19/2009 3/18/2009 3/17/2009 3/16/2009 3/15/2009 3/14/2009 3/13/2009 3/12/2009 3/11/2009 3/10/2009 3/9/2009 3/8/2009 3/7/2009 3/6/2009 3/5/2009 3/4/2009 3/3/2009 3/2/2009 3/1/2009 0.00 Power in KWh (Daily) for Blk 509A Mar 2009 Prepared by Maung Maung 99 26-Mar 106.97 23-Mar 116.61 SIM University Efficiency (Daily Average) for Blk 509A Mar 2009 13.07 12.64 11.60 9.29 8.52 8.85 8.12 8.57 7.86 6.25 5.74 5.23 4.80 8.15 7.47 6.70 6.15 6.43 5.90 22-Mar 8.11 7.44 11.65 10.69 11.17 21-Mar 7.49 6.88 12.18 11.99 7.23 6.63 4.89 4.48 26-Mar 23-Mar 20-Mar 18-Mar 13-Mar 12-Mar 11-Mar 10-Mar 8-Mar 7-Mar 6-Mar 5-Mar 4-Mar 2-Mar 1-Mar 2.933.20 Efficiency (Daily Average) for Blk 509A Mar 2009 Performance Ratio (Daily Average) for Blk 509A Mar 2009 118.82 108.99 114.91 105.41 77.88 73.68 71.44 68.11 67.59 62.48 110.66 101.52 84.38 77.41 80.45 73.80 105.87 97.11 74.03 67.91 65.71 60.28 60.93 58.45 55.89 53.62 56.83 52.13 47.52 43.59 44.41 40.74 Performance Ratio (Daily Average) for Blk 509A Mar 2009 Prepared by Maung Maung 100 26-Mar 23-Mar 22-Mar 21-Mar 20-Mar 18-Mar 13-Mar 12-Mar 11-Mar 10-Mar 8-Mar 7-Mar 6-Mar 5-Mar 4-Mar 2-Mar 1-Mar 29.05 26.65 SIM University Power in kWh (Daily) for BLK 509B MAR 2009 50.00 47.50 46.08 41.08 38.92 40.00 32.19 32.83 32.60 31.52 34.34 30.87 28.14 25.61 23.58 22.66 30.00 23.10 20.85 18.28 20.00 23.30 17.20 14.37 12.80 10.00 3/1/2009 3/2/2009 3/3/2009 3/4/2009 3/5/2009 3/6/2009 3/7/2009 3/8/2009 3/9/2009 3/10/2009 3/11/2009 3/12/2009 3/13/2009 3/14/2009 3/15/2009 3/16/2009 3/17/2009 3/18/2009 3/19/2009 3/20/2009 3/21/2009 3/22/2009 3/23/2009 3/24/2009 3/25/2009 3/26/2009 3/27/2009 3/28/2009 3/29/2009 3/30/2009 0.00 Power in KWh (Daily) for Blk 509B Mar 2009 Efficiency (Daily Average) for Blk 509B Mar 2009 11.54 10.59 11.20 10.27 9.98 9.16 9.46 8.67 5.61 5.15 5.66 5.19 Efficiency (Daily Average) for Blk 509B Mar 2009 Prepared by Maung Maung 101 26-Mar 25-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 3.11 2.85 14-Mar 13-Mar 3.49 3.20 12-Mar 11-Mar 10-Mar 6.84 6.226.27 5.71 5.73 5.50 5.26 5.05 5.06 4.65 4.18 3.83 8-Mar 7-Mar 6-Mar 2-Mar 1-Mar 4.44 4.07 8.34 7.65 7.50 6.88 24-Mar 7.97 7.32 7.82 7.17 15-Mar 7.66 7.92 7.02 7.26 SIM University Performance Ratio (Daily Average) for Blk 509B Mar 2009 104.88 101.74 96.21 93.33 90.70 85.92 78.82 51.00 46.79 51.45 47.19 Performance Ratio (Daily Average) for Blk 509B Mar 2009 Power in kWh (Daily) for BLK 510A MAR 2009 52.35 48.75 50.00 43.74 42.25 39.58 39.36 40.00 39.11 36.20 36.17 33.57 36.15 32.87 29.29 30.00 30.57 29.05 28.13 24.31 23.04 19.81 20.00 17.66 16.90 8.98 10.00 8.69 3/26/2009 3/25/2009 3/24/2009 3/23/2009 3/22/2009 3/21/2009 3/20/2009 3/19/2009 3/18/2009 3/17/2009 3/16/2009 3/15/2009 3/14/2009 3/13/2009 3/12/2009 3/11/2009 3/10/2009 3/9/2009 3/8/2009 3/7/2009 3/6/2009 3/5/2009 3/4/2009 3/3/2009 3/2/2009 3/1/2009 0.00 Power in KWh (Daily) for Blk 510A Mar 2009 Prepared by Maung Maung 102 26-Mar 25-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 28.26 25.92 14-Mar 13-Mar 12-Mar 31.73 29.11 11-Mar 10-Mar 62.14 56.5457.00 52.07 50.02 51.87 47.76 45.89 46.03 42.22 37.98 34.84 8-Mar 7-Mar 6-Mar 2-Mar 1-Mar 40.36 37.02 75.80 69.54 68.14 62.51 24-Mar 72.47 66.48 71.07 65.20 15-Mar 71.96 69.59 63.84 66.02 83.20 SIM University Efficiency (Daily Average) for Blk 510A Mar 2009 14.45 14.24 13.62 13.25 13.06 12.72 12.49 11.84 11.67 10.86 10.63 10.26 9.62 9.56 8.82 8.77 8.78 7.98 8.06 5.60 5.13 4.81 4.41 7.06 6.47 4.29 3.93 4.11 3.77 25-Mar 24-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 15-Mar 14-Mar 13-Mar 12-Mar 11-Mar 10-Mar 9-Mar 8-Mar 7-Mar 6-Mar 5-Mar 2.11 1.94 4-Mar 3-Mar 7.43 6.81 6.83 6.27 2.18 2.00 2-Mar 8.06 7.32 7.12 6.53 5.91 5.42 1-Mar 8.79 8.72 26-Mar 8.79 8.16 8.07 7.48 9.75 9.50 9.42 Efficiency (Daily Average) for Blk 510A Mar 2009 Performance Ratio (Daily Average) for Blk 510A Mar 2009 131.30 129.38 123.76 120.44 118.68 115.58 113.53 107.63 106.02 98.74 96.57 93.27 87.38 86.89 74.1173.31 67.99 79.80 62.10 56.97 50.86 46.66 38.98 35.76 37.31 34.22 25-Mar 24-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 15-Mar 14-Mar 13-Mar 12-Mar 11-Mar 10-Mar 9-Mar 8-Mar 7-Mar 6-Mar 5-Mar 19.19 17.60 4-Mar 3-Mar 43.73 40.11 73.20 67.48 64.13 61.91 58.83 66.56 64.66 59.32 19.83 18.19 2-Mar 79.85 79.21 72.5673.25 53.67 49.24 1-Mar 86.34 85.56 80.16 79.71 Performance Ratio (Daily Average) for Blk 510A Mar 2009 Prepared by Maung Maung 103 26-Mar 79.92 88.59 SIM University Power in kWh (Daily) for BLK 510B MAR 2009 54.71 50.93 50.00 47.45 38.45 40.00 42.54 41.24 39.95 38.42 35.50 35.31 32.89 33.20 32.34 28.71 30.00 29.71 28.66 27.48 23.58 22.67 19.45 20.00 17.53 16.64 8.57 8.18 10.00 3/26/2009 3/25/2009 3/24/2009 3/23/2009 3/22/2009 3/21/2009 3/20/2009 3/19/2009 3/18/2009 3/17/2009 3/16/2009 3/15/2009 3/14/2009 3/13/2009 3/12/2009 3/11/2009 3/10/2009 3/9/2009 3/8/2009 3/7/2009 3/6/2009 3/5/2009 3/4/2009 3/3/2009 3/2/2009 3/1/2009 0.00 Power in KWh (Daily) for Blk 510B Mar 2009 Efficiency (Daily Average) for Blk 510A Mar 2009 14.18 13.88 13.29 13.00 12.73 12.37 12.19 11.53 11.35 10.57 9.34 8.57 5.51 5.05 4.73 4.33 8.06 7.40 7.22 6.96 6.62 6.39 4.26 3.91 4.04 3.71 Efficiency (Daily Average) for Blk 510B Mar 2009 Efficiency (Monthly Average) for Blk 510B Mar 2009 Prepared by Maung Maung 104 26-Mar 25-Mar 24-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 17-Mar 16-Mar 14-Mar 13-Mar 12-Mar 11-Mar 10-Mar 8-Mar 7-Mar 6-Mar 5-Mar 9-Mar 2.08 1.91 4-Mar 3-Mar 8.63 7.86 7.91 7.21 6.68 6.12 1.99 1.82 2-Mar 9.19 6.97 6.40 5.73 5.26 1-Mar 9.48 9.33 8.56 15-Mar 8.58 7.99 7.87 7.33 10.33 10.02 9.71 8.90 SIM University Performance Ratio (Daily Average) for Blk 510B Mar 2009 128.84 126.15 120.80 118.19 115.72 112.44 110.81 104.75 103.15 96.09 84.88 80.92 77.87 60.67 55.66 50.04 45.91 38.71 35.51 36.74 33.70 Performance Ratio (Daily Average) for Blk 510B Mar 2009 Power in KWh (Daily) for Blk 508A May 2009 50.00 46.39 45.27 43.37 45.00 38.83 38.50 40.00 39.72 36.99 36.82 35.77 35.65 33.46 35.00 38.39 36.05 31.82 30.00 KWh 38.38 41.51 27.03 30.55 26.40 27.97 23.44 25.00 21.21 20.00 15.00 8.88 10.00 6.04 5.00 Power in KWh (Daily) for Blk 508A May 2009 Prepared by Maung Maung 105 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 0.00 26-Mar 25-Mar 24-Mar 23-Mar 22-Mar 21-Mar 20-Mar 19-Mar 18-Mar 16-Mar 17-Mar 14-Mar 13-Mar 12-Mar 11-Mar 10-Mar 9-Mar 8-Mar 7-Mar 6-Mar 5-Mar 4-Mar 3-Mar 42.94 39.39 73.29 67.23 18.92 17.35 18.06 16.56 2-Mar 78.39 71.4071.91 65.58 65.50 63.27 60.16 58.04 77.81 63.38 58.14 52.06 47.76 1-Mar 86.15 84.82 83.52 15-Mar 77.97 72.6171.52 66.60 93.92 91.04 88.21 SIM University Efficiency (Daily Average) for Blk 508A May 2009 12.85 12.01 12.54 11.72 9.88 9.23 11.00 10.63 10.28 9.93 10.76 10.67 9.9110.05 9.97 9.26 9.27 8.66 8.81 8.24 7.49 7.00 6.49 6.07 12.02 11.23 10.64 10.25 10.20 9.94 9.58 9.53 11.50 10.75 9.99 9.33 8.46 7.91 7.75 7.31 7.24 6.84 5.88 5.49 2.46 2.30 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 1.67 1.56 Efficiency (Daily Average) for Blk 508A May 2009 Performance Ratio (Daily Average) for Blk 508A May 2009 116.26 113.46 108.70 108.64 106.02 104.04 99.55 96.18 93.03 89.88 97.32 96.50 90.94 90.17 89.66 89.36 83.86 78.36 83.50 101.57 96.22 97.22 92.72 92.27 89.91 86.64 86.22 83.78 90.35 84.43 79.75 74.52 76.58 71.56 70.10 66.1765.50 61.83 67.75 63.30 58.76 54.90 53.15 49.67 22.26 20.80 Performance Ratio (Daily Average) for Blk 508A May 2009 Prepared by Maung Maung 106 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 15.13 14.13 SIM University Power in KWh (Daily) for Blk 508B May 2009 50.00 46.75 45.23 45.00 40.51 40.02 38.35 40.00 38.07 37.58 37.79 34.97 35.00 33.19 33.16 29.98 KWh 30.00 25.87 29.65 29.61 27.31 25.00 22.25 20.00 17.87 15.00 12.77 10.26 10.00 5.00 31-May-09 30-May-09 29-May-09 28-May-09 27-May-09 26-May-09 25-May-09 24-May-09 23-May-09 22-May-09 21-May-09 20-May-09 19-May-09 18-May-09 17-May-09 16-May-09 15-May-09 14-May-09 13-May-09 12-May-09 0.00 Power in KWh (Daily) for Blk 508B May 2009 Efficiency (Daily Average) for Blk 508B May 2009 12.95 12.53 12.10 11.71 11.22 11.09 10.62 10.55 10.41 10.4710.49 10.36 9.93 9.73 9.86 9.78 9.69 9.19 9.19 9.05 8.59 8.31 7.76 7.57 7.17 7.07 6.70 8.21 8.20 7.68 7.67 8.59 6.16 5.76 4.95 4.63 3.54 3.31 Efficiency (Daily Average) for Blk 508B May 2009 Prepared by Maung Maung 107 31-May-09 30-May-09 29-May-09 28-May-09 27-May-09 26-May-09 25-May-09 24-May-09 23-May-09 22-May-09 21-May-09 20-May-09 19-May-09 18-May-09 17-May-09 16-May-09 15-May-09 14-May-09 13-May-09 12-May-09 2.84 2.66 SIM University Performance Ratio (Daily Average) for Blk 508B May 2009 100.29 93.72 96.12 89.82 117.17 109.48 113.35 105.92 101.53 94.18 94.72 94.87 88.01 88.51 83.17 77.72 95.42 89.16 87.63 81.89 75.15 70.22 68.45 64.83 63.97 60.58 74.31 74.22 69.44 69.35 83.12 77.67 55.76 52.10 44.80 41.86 Performance Ratio (Daily Average) for Blk 508B May 2009 Power in KWh (Daily) for BLK508C MAY 2009 50.00 45.31 45.00 40.00 46.09 43.46 41.96 39.75 41.26 38.53 38.47 39.11 38.04 38.30 36.86 36.54 35.79 35.00 30.00 33.09 32.48 29.71 29.54 25.00 29.44 27.82 27.75 26.65 26.48 KWh 36.08 34.54 33.28 23.19 21.62 20.00 15.00 12.09 8.58 10.00 5.00 30-May-09 29-May-09 28-May-09 27-May-09 26-May-09 25-May-09 24-May-09 23-May-09 22-May-09 21-May-09 20-May-09 19-May-09 18-May-09 17-May-09 16-May-09 15-May-09 14-May-09 13-May-09 12-May-09 11-May-09 9-May-09 10-May-09 8-May-09 7-May-09 6-May-09 5-May-09 4-May-09 3-May-09 2-May-09 1-May-09 0.00 Power in KWh (Daily) for Blk 508C May 2009 Prepared by Maung Maung 108 31-May-09 30-May-09 29-May-09 28-May-09 27-May-09 25-May-09 24-May-09 23-May-09 22-May-09 21-May-09 20-May-09 19-May-09 18-May-09 17-May-09 16-May-09 15-May-09 14-May-09 13-May-09 12-May-09 26-May-09 32.00 29.90 25.71 24.03 Prepared by Maung Maung 20.19 21.61 62.29 66.66 10-May-09 Performance Ratio (Daily Average) for Blk 508C May 2009 109 30-May-09 29-May-09 77.84 83.31 65.45 70.04 69.25 74.11 30-May-09 8.94 28-May-09 81.26 86.96 29-May-09 8.41 27-May-09 28.43 30.43 28-May-09 27-May-09 26-May-09 7.18 26-May-09 69.89 74.80 84.88 90.84 25-May-09 24-May-09 7.69 25-May-09 24-May-09 23-May-09 102.23 109.40 23-May-09 22-May-09 21-May-09 7.65 22-May-09 90.09 96.41 85.97 92.00 20-May-09 21-May-09 86.72 92.80 20-May-09 19-May-09 9.54 9.46 19-May-09 18-May-09 97.07 103.88 18-May-09 17-May-09 10.12 9.85 50.86 54.43 65.27 69.85 16-May-09 16-May-09 9.27 17-May-09 62.69 67.09 6.90 15-May-09 15-May-09 14-May-09 6.85 76.40 81.77 92.00 98.46 13-May-09 13-May-09 8.61 14-May-09 89.50 95.78 12-May-09 12-May-09 11-May-09 10-May-09 9-May-09 8-May-09 7-May-09 6-May-09 5-May-09 4-May-09 3-May-09 2-May-09 9.97 9.96 11-May-09 90.49 96.84 9-May-09 108.42 116.03 90.64 97.00 84.21 90.12 78.28 83.77 106.59 114.07 98.71 105.64 93.52 100.09 1-May-09 10.86 10.29 8-May-09 7-May-09 54.54 58.37 69.49 74.37 11.73 6-May-09 5-May-09 4-May-09 3-May-09 2-May-09 1-May-09 SIM University Efficiency (Daily Average) for Blk 508C May 2009 11.93 10.68 11.25 9.91 9.34 8.57 7.62 7.20 6.00 5.60 3.13 2.22 Efficiency (Daily Average) for Blk 508C May 2009 Performance Ratio (Daily Average) for Blk 508C May 2009 Prepared by Maung Maung 2.23 2.39 5.34 5.71 6.80 7.28 Efficiency (Daily Average) for Blk 509A May 2009 110 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 3.04 3.25 7.05 7.55 8.39 8.98 7.48 8.00 8.90 9.52 7.71 8.25 9.16 9.81 10.97 11.74 9.71 10.39 9.36 10.02 9.10 9.74 10.42 11.15 29-May 27-May 25-May 23-May 21-May 19-May 17-May 15-May 13-May 8.62 10.00 18-May 7.09 7.58 6.71 7.18 8.37 8.95 9.98 10.68 11-May 9-May 11.75 20.62 27.24 34.38 32.41 28.88 35.40 37.50 36.17 45.66 42.39 40.23 38.56 37.56 35.17 32.31 29.77 27.37 25.93 26.26 38.23 37.97 45.00 17-May 16-May 15-May 14-May 13-May 12-May 9.72 10.40 9.83 10.52 10-May 35.49 31.64 28.19 26.06 40.00 11-May 9.90 10.59 7-May 5-May 13.98 50.00 9-May 9.19 9.83 11.82 12.65 3-May 24.69 22.54 35.00 8-May 7-May 8.19 8.77 7.30 7.81 1-May 15.00 6-May 5-May 3.62 3.87 KWh 25.00 6.75 7.22 6.39 6.84 5.83 6.24 30.00 4-May 3-May 2-May 1-May SIM University Power in KWh (Daily) for BLK509A MAY 20.00 5.00 0.00 Power in KWh (Daily) for Blk 509A May 2009 Efficiency (Daily Average) for Blk 509A May 2009 Prepared by Maung Maung 21.40 30.25 28.11 26.95 33.23 Power in KWh (Daily) for Blk 509B May 2009 111 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 27.88 35.26 33.39 29.79 36.49 38.56 47.02 43.74 41.58 39.59 38.70 39.25 38.32 37.06 0.00 20-May 12.26 15.00 37.43 20.00 19-May 8.82 10.00 18-May 17-May 16-May 15-May 14-May 13-May 12-May 27.06 30.00 11-May 10-May 9-May 36.70 40.00 8-May 7-May 33.87 35.00 6-May 46.16 42.73 40.36 50.00 5-May 23.85 25.00 4-May 3-May 5.00 1.25 45.00 2-May 1-May KWh 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May 1-May 27.63 29.57 20.28 21.70 32.89 35.20 48.51 51.92 80.88 86.55 76.25 81.61 99.73 106.73 88.21 94.40 85.09 91.06 83.28 89.12 67.94 72.71 64.08 68.58 94.65 101.29 82.74 88.55 70.04 74.95 107.42 114.96 90.71 97.07 88.35 94.55 89.32 95.59 76.02 81.35 64.39 68.91 60.99 65.27 61.79 66.12 89.93 96.24 83.48 89.34 74.44 79.67 66.32 70.97 61.30 65.60 58.08 62.15 53.02 56.74 SIM University Performance Ratio (Daily Average) for Blk 509A May 2009 Performance Ratio (Daily Average) for Blk 509A May 2009 Power in KWh(Daily) for BLK509B MAY 2009 Prepared by Maung Maung 20.75 22.20 Performance Ratio (Daily Average) for Blk 509B May 2009 112 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 28.84 30.86 78.54 84.05 65.59 70.19 70.07 74.99 82.94 88.76 71.16 76.15 85.84 91.87 102.89 110.11 90.71 97.08 87.20 93.31 20-May 97.83 104.69 88.05 94.23 50.36 53.89 66.13 70.77 63.39 67.84 78.17 83.66 19-May 18-May 17-May 16-May 15-May 14-May 93.14 99.68 13-May 92.34 98.82 110.61 118.37 108.60 116.22 90.16 96.48 86.34 92.40 79.68 85.27 63.66 68.13 56.12 60.06 100.52 107.57 94.95 101.62 91.03 97.42 2.94 3.15 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May 1-May 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May 1-May 0.32 0.35 3.17 3.40 2.28 2.44 5.54 5.93 9.13 9.77 9.45 10.11 11.32 12.12 9.98 10.68 9.59 10.27 8.64 9.25 7.71 8.25 7.22 7.72 10.76 11.52 9.69 10.37 8.60 9.21 12.17 13.03 11.95 12.79 10.25 10.97 10.02 10.72 10.16 10.87 9.92 10.62 9.50 10.17 8.77 9.38 7.83 8.38 7.28 7.79 6.98 7.46 7.00 7.50 6.18 6.61 11.06 11.84 10.45 11.18 SIM University Efficiency (Daily Average) for Blk 509B May 2009 Efficiency (Daily Average) for Blk 509B May 2009 Performance Ratio (Daily Average) for Blk 509B May 2009 Prepared by Maung Maung 2.82 3.02 5.97 6.39 7.50 8.02 Efficiency (Daily Average) for Blk 510A May 2009 113 28-May 27-May 26-May 25-May 24-May 23-May 3.67 3.93 7.77 8.31 9.70 10.38 8.52 9.11 9.77 10.46 11.74 12.56 10.53 11.26 21-May 22-May 10.31 11.03 20-May 11.39 12.19 10.34 11.07 7.96 8.52 7.45 7.97 9.16 9.81 10.89 11.66 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 10.63 11.38 10.60 11.34 10-May 11-May 10.82 11.58 9-May 9.89 10.59 12.73 13.62 28-May 26-May 24-May 22-May 20-May 18-May 16-May 14-May 12-May 10-May 8-May 6-May 4-May 2-May 14.19 10.90 15.32 KWh 23.06 30.00 40.66 39.82 37.46 45.34 43.99 39.95 37.76 35.40 42.08 41.06 40.95 49.18 48.64 44.88 41.79 38.22 36.57 32.90 30.76 28.77 28.96 25.99 40.00 8-May 9.47 10.13 12.59 13.47 20.00 7-May 6.73 7.20 11.62 12.43 30.00 6-May 3.96 4.24 50.00 5-May 4-May 3-May 2-May SIM University Power in KWh (Daily) for BLK510A MAY 2009 60.00 10.00 0.00 Power in KWh (Daily) for Blk 510 May 2009 Effciency (Daily Average) for Blk 510A May 2009 Prepared by Maung Maung Power in KWh (Daily) for Blk 510B May 2009 114 29-May 14.26 10.80 20.00 27-May 25-May 23-May 21-May 19-May 17-May 15-May 13-May 22.99 29.44 34.79 31.65 36.16 38.21 39.99 38.37 44.40 42.79 47.95 45.30 40.90 40.13 39.75 40.51 38.48 34.48 32.10 29.62 28.64 28.52 30.00 11-May 9-May 36.84 38.96 50.00 7-May 5-May 21.21 36.16 34.68 31.39 40.00 3-May 1-May KWh 10.00 0.00 28-May 27-May 26-May 25-May 24-May 23-May 70.57 75.52 88.13 94.32 77.39 82.82 88.83 95.06 106.66 114.14 95.66 102.37 54.25 58.05 103.49 110.75 93.99 100.58 83.28 89.12 98.99 105.94 96.59 103.37 96.33 103.09 21-May 22-May 115.69 123.81 114.42 122.45 98.31 105.21 89.91 96.22 86.03 92.06 72.37 77.45 67.68 72.43 68.12 72.90 61.15 65.44 105.57 112.98 93.67 100.25 33.39 35.73 25.65 27.45 36.03 38.56 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May SIM University Performance Ratio (Daily Average) for Blk 510A May 2009 Performance Ratio (Daily Average) for Blk 510A May 2009 Power in KWh (Daily) for BLK 510B MAY 2009 60.00 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 510B May 2009 115 28-May 27-May 26-May 25-May 24-May 23-May 33.39 35.73 70.57 75.52 88.13 94.32 77.39 82.82 88.83 95.06 21-May 106.66 114.14 95.66 102.37 103.49 110.75 93.67 100.25 54.25 58.05 83.28 89.12 98.99 105.94 96.59 103.37 96.33 103.09 20-May 22-May 115.69 123.81 114.42 122.45 98.31 105.21 89.91 96.22 86.03 92.06 72.37 77.45 67.68 72.43 68.12 72.90 61.15 65.44 105.57 112.98 93.99 100.58 25.65 27.45 36.03 38.56 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May Efficiency (Daily Average) for Blk 510B May 2009 Performance Ratio (Daily Average) for Blk 510B May 2009 30-May 29-May 28-May 27-May 26-May 25-May 24-May 23-May 22-May 21-May 20-May 19-May 18-May 17-May 16-May 15-May 14-May 13-May 12-May 11-May 10-May 9-May 8-May 7-May 6-May 5-May 4-May 3-May 2-May 1-May 3.69 3.95 2.80 2.99 5.95 6.37 5.49 5.88 9.01 9.64 8.19 8.77 7.62 8.16 9.89 10.59 9.36 10.02 8.31 8.89 11.49 12.30 10.35 11.08 9.93 10.63 9.96 10.66 11.08 11.85 10.59 11.33 10.39 11.12 10.29 11.01 8.93 9.55 7.67 8.21 7.41 7.93 7.38 7.90 10.49 11.22 9.54 10.21 12.41 13.28 11.73 12.55 10.08 10.79 9.36 10.02 8.98 9.61 8.13 8.70 SIM University Effciency (Daily Average) for Blk 510B May 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 508B July 2009 116 31-Jul 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 0.76 0.83 2.67 2.92 4.03 4.40 4.63 5.05 5.88 6.41 7.43 8.10 8.94 12.05 13.02 12.09 11.93 11.08 10.77 11.05 12.49 12.29 11.45 10.26 11.19 9.88 9.75 10.12 9.55 11.27 10.02 10.93 9.27 8.75 10.89 10.57 11.53 9.98 9.28 8.99 8.51 8.24 7.34 8.00 6.56 7.15 5.73 6.26 5.15 5.61 5.87 6.40 5.60 6.11 4.71 5.14 5.62 6.14 4.63 5.05 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 2.96 10.45 15.75 18.09 22.97 29.02 39.14 38.60 34.92 43.30 46.64 43.18 44.74 44.03 41.29 39.02 36.24 34.20 33.25 32.22 28.68 25.62 22.41 20.11 22.93 21.90 18.42 21.98 18.08 KWh SIM University Power in KWh (Daily) for Blk 508B July 2009 Power in KWh (Daily) for Blk 508B July 2009 Effciency (Daily Average) for Blk 508B July 2009 Prepared by Maung Maung Power in KWh (Daily) for Blk 508C July 2009 117 9.72 35.06 37.09 36.24 41.33 41.82 44.45 41.61 42.61 45.56 21.73 25.62 28.68 32.00 32.01 30-Jul 14.78 17.62 23.14 22.41 19.57 22.20 23.96 38.33 45.56 7.07 7.27 5.35 12.66 20.81 25.35 KWh 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul Performance Ratio (Daily Average) for Blk 508B July 2009 Power in KWh (Daily) for Blk 508C July 2009 31-Jul 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 6.88 7.51 24.30 26.51 36.63 39.96 53.42 58.27 42.06 45.88 93.22 101.69 100.69 109.84 108.45 118.30 100.40 109.53 104.04 113.50 102.38 111.68 89.75 97.90 81.20 88.58 67.48 73.62 84.27 91.93 79.52 86.75 77.32 84.35 91.02 99.29 96.01 104.74 90.74 98.98 74.93 81.74 66.68 72.74 59.58 64.99 52.11 56.85 46.76 51.02 53.32 58.16 50.93 55.56 42.82 46.72 51.11 55.76 42.04 45.86 SIM University Performance Ratio (Daily Average) for Blk 508B July 2009 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 508C July 2009 118 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 16.44 17.94 84.27 91.93 50.53 55.13 40.97 44.69 96.10 104.84 105.95 115.58 105.95 115.58 81.52 88.93 97.25 106.09 103.35 112.74 96.75 105.55 86.24 94.08 66.68 72.74 52.11 56.85 59.58 64.99 53.81 58.71 74.41 81.17 99.07 108.08 89.13 97.24 74.42 81.19 55.70 60.77 51.62 56.32 45.51 49.65 34.37 37.50 12.43 13.56 22.60 24.66 16.89 18.43 29.45 32.12 58.94 64.30 48.38 52.78 11.66 12.72 10.57 11.54 10.70 11.67 8.97 9.79 11.37 12.41 9.49 10.35 10.65 11.61 30-Jul 3.78 4.13 5.56 6.07 4.51 4.92 6.56 7.15 5.73 6.26 10.90 11.89 9.27 10.12 8.19 8.93 8.19 8.93 7.34 8.00 5.92 6.46 5.01 5.46 5.68 6.20 6.13 6.69 9.81 10.70 11.66 12.72 1.81 1.97 1.86 2.03 2.49 2.71 1.37 1.49 3.24 3.53 5.32 5.81 6.49 7.08 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul SIM University Effciency (Daily Average) for Blk 508C July 2009 Efficiency (Daily Average) for Blk 508C July 2009 Performance Ratio (Daily Average) for Blk 508C July 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 509A July 2009 119 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 3.76 4.10 5.55 6.06 11.28 12.30 10.57 11.53 11.43 12.47 10.28 11.21 10.58 11.54 8.89 9.70 8.08 8.82 10.94 11.93 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 8.13 14.69 21.70 19.38 21.82 25.34 34.74 31.58 31.63 41.32 44.67 40.16 41.33 44.08 42.74 38.67 40.16 38.70 50.00 15-Jul 14-Jul 13-Jul 8.09 8.83 9.90 10.80 10-Jul 9-Jul 8-Jul 11.89 0.00 7-Jul 5.00 12.46 35.00 12-Jul 11-Jul 10-Jul 4.96 5.41 5.58 6.09 6.48 7.07 10.00 6-Jul 17.10 30.00 9-Jul 2.08 2.27 3.04 3.32 7-Jul 5-Jul 15.00 8-Jul 3.19 3.48 6-Jul 19.82 23.20 40.00 4-Jul 3-Jul 2-Jul 1-Jul Kwh 45.00 5-Jul 4.38 4.77 10.27 11.21 9.90 10.80 20.00 4-Jul 5.07 5.53 5.94 6.48 25.00 3-Jul 2-Jul 1-Jul SIM University Power in KWh (Daily) for Blk 509A July 2009 Power in KWh (Daily) for Blk 509A July 2009 Effciency (Daily Average) for Blk 509A July 2009 Prepared by Maung Maung Power in KWh (Daily) for Blk 509B July 2009 120 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 15.09 17.83 22.22 37.49 43.50 42.51 41.78 42.18 46.34 45.30 42.04 39.60 36.83 35.71 32.29 32.33 29.00 25.96 22.65 23.59 19.93 22.48 26.10 24.20 31.48 50.00 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 17.51 35.00 6-Jul 20.00 5-Jul 41.07 39.37 45.00 4-Jul 25.00 21.03 40.00 3-Jul 25.62 30.00 2-Jul 1-Jul Performance Ratio (Daily Average) for Blk 509A July2009 Power in KWh (Daily) for Blk 509B July 2009 15.00 10.00 5.00 0.00 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 19.13 20.47 51.32 54.93 51.06 54.64 97.21 104.03 105.08 112.46 94.48 101.11 97.24 104.06 103.69 110.96 100.54 107.60 90.98 97.37 94.47 101.10 91.05 97.43 81.73 87.47 74.30 79.51 74.42 79.64 59.61 63.80 45.59 48.79 34.55 36.98 27.96 29.92 29.31 31.37 40.23 43.05 46.63 49.90 54.57 58.40 SIM University Performance Ratio (Daily Average) for Blk 509A July 2009 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 509B July 2009 121 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 52.89 56.60 52.28 55.95 41.93 44.88 61.07 65.36 53.28 57.02 100.01 107.03 109.01 116.66 98.29 105.19 99.22 106.19 106.57 114.05 88.21 94.40 98.91 105.85 86.64 92.72 84.00 89.89 68.22 73.00 55.50 59.39 75.96 81.30 102.34 109.52 93.15 99.69 96.61 103.39 92.61 99.11 76.05 81.39 61.41 65.72 46.89 50.18 35.51 38.00 74.05 79.24 56.93 60.93 41.20 44.10 49.48 52.96 60.26 64.49 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 23-Jul 22-Jul 21-Jul 20-Jul 19-Jul 18-Jul 17-Jul 16-Jul 15-Jul 14-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 3.86 4.21 5.69 6.20 4.56 4.98 6.64 7.25 5.80 6.32 11.13 12.14 10.13 11.05 10.51 11.46 10.07 10.99 10.88 11.87 11.86 12.93 10.69 11.66 10.79 11.77 9.14 9.97 11.59 12.64 9.59 10.47 10.76 11.74 9.42 10.28 8.26 9.01 8.27 9.02 7.42 8.09 6.04 6.58 5.10 5.56 8.05 8.79 6.68 7.29 6.19 6.76 5.75 6.28 4.48 4.89 5.38 5.87 6.55 7.15 SIM University Effciency (Daily Average) for Blk 509B July 2009 Efficiency (Daily Average) for Blk 509B July 2009 Performance Ratio (Daily Average) for Blk 509B July 2009 2.73 2.98 8.81 9.62 Prepared by Maung Maung Efficiency (Daily Average) for Blk 510A July 2009 122 31-Jul 30-Jul 29-Jul 4.48 4.89 6.32 6.89 5.62 6.13 6.34 6.92 10.96 11.95 11.41 12.44 12.36 13.48 11.08 12.09 11.48 12.52 9.63 10.51 11.98 13.07 10.84 11.83 8.94 9.75 7.27 7.93 31-Jul 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 1.07 2.48 2.84 2.64 2.47 2.20 1.75 2.00 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2.31 2.82 4.37 4.28 4.28 4.46 4.83 4.33 4.48 4.68 4.24 3.76 3.49 3.44 4.00 7-Jul 6-Jul 6.75 7.37 11.18 12.20 4-Jul 2-Jul 1-Jul 5.00 5-Jul 10.95 11.94 3-Jul 5.91 6.45 7.22 7.87 3.00 2-Jul 1-Jul SIM University Power in KWh (Daily) for Blk 510A July 2009 6.00 1.00 0.00 Power in KWh (Daily) for Blk 510A July 2009 Effciency (Daily Average) for Blk 510A July 2009 Prepared by Maung Maung 21.89 24.36 31.01 34.09 28.02 26.51 45.14 41.30 Power in KWh (Daily) for Blk 510B July 2009 123 31-Jul-09 30-Jul-09 29-Jul-09 28-Jul-09 27-Jul-09 17.26 41.41 43.52 47.25 42.72 43.45 0.00 26-Jul-09 5.00 43.45 10.00 25-Jul-09 14.36 15.00 24-Jul-09 14-Jul-09 13-Jul-09 12-Jul-09 11-Jul-09 10-Jul-09 9-Jul-09 8-Jul-09 7-Jul-09 33.37 40.00 6-Jul-09 19.02 20.00 5-Jul-09 42.75 41.14 50.00 4-Jul-09 25.00 22.58 45.00 3-Jul-09 30.00 27.22 35.00 2-Jul-09 1-Jul-09 Performance Ratio (Daily Average) for Blk 510A July 2009 Power in KWh (Daily) for BLK510B July 2009 31-Jul 30-Jul 29-Jul 28-Jul 27-Jul 26-Jul 25-Jul 24-Jul 13-Jul 12-Jul 11-Jul 10-Jul 9-Jul 8-Jul 7-Jul 6-Jul 5-Jul 4-Jul 3-Jul 2-Jul 1-Jul 25.08 26.84 41.21 44.10 58.10 62.17 51.70 55.33 58.29 62.38 102.79 110.00 100.66 107.72 110.18 117.91 100.74 107.81 104.87 112.23 113.62 121.59 101.88 109.03 105.51 112.91 88.55 94.77 82.20 87.97 99.66 106.66 81.04 86.73 66.84 71.53 62.09 66.45 54.33 58.14 66.34 70.99 SIM University Performance (Daily Average) for Blk 510A July 2009 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 510B July 2009 124 31-Jul-09 30-Jul-09 29-Jul-09 28-Jul-09 27-Jul-09 40.60 43.45 97.41 104.24 102.39 109.58 111.16 118.97 100.50 107.55 102.22 109.40 26-Jul-09 72.95 78.07 106.19 113.64 97.16 103.97 102.22 109.40 33.78 36.15 51.51 55.12 80.20 85.83 65.92 70.55 100.57 107.63 96.77 103.56 78.49 84.00 62.36 66.74 57.32 61.34 44.74 47.88 53.13 56.86 64.04 68.53 25-Jul-09 24-Jul-09 14-Jul-09 13-Jul-09 12-Jul-09 11-Jul-09 10-Jul-09 9-Jul-09 8-Jul-09 7-Jul-09 6-Jul-09 5-Jul-09 4-Jul-09 3-Jul-09 2-Jul-09 1-Jul-09 11.55 12.60 31-Jul-09 30-Jul-09 29-Jul-09 28-Jul-09 27-Jul-09 4.42 4.82 10.59 11.56 11.14 12.15 12.09 13.19 10.93 11.92 11.12 12.13 7.93 8.66 8.72 9.52 10.57 11.53 26-Jul-09 5.60 6.11 10.94 11.93 10.53 11.48 11.12 12.13 3.67 4.01 8.54 9.31 7.17 7.82 6.78 7.40 6.23 6.80 4.87 5.31 5.78 6.30 6.97 7.60 25-Jul-09 24-Jul-09 14-Jul-09 13-Jul-09 12-Jul-09 11-Jul-09 10-Jul-09 9-Jul-09 8-Jul-09 7-Jul-09 6-Jul-09 5-Jul-09 4-Jul-09 3-Jul-09 2-Jul-09 1-Jul-09 SIM University Effciency (Daily Average) for Blk 510B July 2009 Efficiency (Daily Average) for Blk 510B July 2009 Performance Ratio (Daily Average) for Blk 510B July 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 508A Aug 2009 125 2.41 4.85 5.18 5.48 5.03 7.84 7.33 6.75 8.03 9.70 9.59 9.34 10.84 11.83 11.90 11.19 10.78 9-Aug 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9.57 10.00 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 5.28 5.21 6.53 8-Aug 19.21 20.53 21.73 19.93 20.94 20.65 20.25 31.83 31.08 29.03 26.75 25.88 27.43 23.74 31.90 38.43 38.00 37.00 42.94 46.86 47.17 44.34 42.70 40.80 39.89 37.42 41.33 40.04 50.00 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 5.11 7-Aug 6-Aug 15.48 30.00 11-Aug 10-Aug 6.92 10.30 5-Aug 4-Aug 25.00 9-Aug 8-Aug 5.99 10.07 3-Aug 2-Aug 20.00 7-Aug 3.91 1-Aug 40.00 6-Aug 5-Aug 9.44 10.43 10.10 KWh 45.00 4-Aug 8.05 35.00 3-Aug 2-Aug 1-Aug SIM University Power in KWh (Daily) for BLK508A Aug 2009 15.00 5.00 0.00 Power in KWh (Daily) for Blk 508A Aug 2009 Effciency (Daily Average) for Blk 508A Aug 2009 0.00 Prepared by Maung Maung 24.84 Power in KWh (Daily) for Blk 508B Aug 2009 126 30-Aug 42.10 30-Aug 29-Aug 28-Aug 27-Aug 87.15 29-Aug 31.24 26-Aug 25-Aug 73.00 28-Aug 20.65 20.04 43.15 24-Aug 49.84 27-Aug 29.66 23-Aug 45.72 26-Aug 21.09 22-Aug 101.69 97.92 25-Aug 24-Aug 23-Aug 44.32 21-Aug 108.18 22-Aug 20.34 20-Aug 48.02 21-Aug 25.69 19-Aug 18-Aug 59.36 20-Aug 40.75 50.00 48.57 17-Aug 62.91 19-Aug 21.26 84.86 18-Aug 17-Aug 16-Aug 47.37 16-Aug 85.82 15-Aug 15-Aug 14-Aug 46.44 38.08 42.19 31.37 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 73.15 14-Aug 13-Aug 27.11 42.83 20.97 20.89 28.73 42.40 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 40.76 39.17 91.50 6-Aug 5-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug 94.79 91.82 4-Aug 41.21 10.00 3-Aug 10.24 20.00 17.00 30.00 42.08 31.86 40.00 2-Aug 1-Aug KWh SIM University Performance Ratio (Daily Average) for Blk 508A Aug 2009 107.48 93.57 98.47 88.13 66.58 71.28 61.36 54.44 47.09 44.05 35.49 21.94 Performance Ratio (Daily Average) for Blk 508A Aug 2009 Power in KWh (Daily) for Blk 508B Aug 2009 60.00 Prepared by Maung Maung 25.52 42.38 61.91 Performance Ratio (Daily Average) for Blk 508B Aug 2009 127 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 49.96 51.46 52.56 50.71 53.00 77.86 73.93 64.05 78.18 121.07 104.93 107.56 110.47 101.57 94.93 105.16 13-Aug 67.57 106.76 52.28 52.06 71.61 105.69 101.59 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 97.63 102.72 3-Aug 4-Aug 104.89 79.42 2-Aug 1-Aug 8/30 8/29 8/28 8/27 8/26 8/25 8/24 8/23 8/22 8/21 8/20 8/19 8/18 8/17 8/16 8/15 8/14 2.809 5.497 5.663 5.784 5.580 5.832 7.048 8.603 8.568 8.135 13.322 11.547 11.836 12.156 11.177 10.446 11.571 7.436 7.880 11.631 8/13 5.752 5.728 6.812 11.179 10.743 11.304 11.542 11.748 4.663 8.740 8/12 8/11 8/10 8/9 8/8 8/7 8/6 8/5 8/4 8/3 8/2 8/1 SIM University Effciency (Daily Average) for Blk 508B Aug 2009 Efficiency (Daily Average) for Blk 508B Aug 2009 Performance Ratio (Daily Average) for Blk 508B Aug 2009 4.00 2.99 6.00 2.00 0.00 Prepared by Maung Maung 7.94 5.91 10.78 Series1 Efficiency (Daily Average) for Blk 508C Aug 2009 128 5.51 5.87 6.08 5.59 8.98 8.22 13.26 13.69 12.39 11.10 10.85 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 10.24 15.00 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 6.05 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 18.87 20.11 20.80 19.15 20.71 20.25 20.13 31.13 30.75 28.15 25.91 25.71 27.19 23.43 37.99 37.14 36.90 42.41 45.39 46.87 43.42 43.03 40.68 39.62 37.21 40.78 39.92 50.00 18-Aug 17-Aug 16-Aug 15-Aug 7.57 9.10 12.69 13-Aug 14-Aug 12.57 7.51 14.00 12-Aug 11-Aug 5.88 9-Aug 8-Aug 7-Aug 15.09 30.00 10-Aug 9-Aug 11.88 6-Aug 5-Aug 25.00 8-Aug 7-Aug 11.57 4-Aug 3-Aug 20.00 6-Aug 5-Aug 10.87 31.35 40.00 2-Aug 1-Aug 45.00 4-Aug 11.91 6.84 8.00 3-Aug 12.00 11.66 4.41 10.00 9.16 35.00 2-Aug 1-Aug KWh SIM University Power in KWh (Daily) for BLK 508C Aug 2009 10.00 5.00 0.00 Power in KWh (Daily) for Blk 508C Aug 2009 Effciency (Daily Average) for Blk 508C Aug 2009 16.00 Prepared by Maung Maung 0.00 Power in KWh (Daily) for Blk 509A Aug 2009 129 36.11 36.14 42.47 44.47 45.83 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 23.22 34.21 53.12 30-Aug 42.79 45.60 47.16 43.42 46.96 45.91 45.65 70.60 69.74 63.82 58.76 58.31 61.65 86.15 84.21 83.67 96.16 102.93 106.27 98.47 97.58 92.24 89.85 84.37 92.47 3-Aug 4-Aug 90.52 71.10 2-Aug 1-Aug 29-Aug 5.00 9.56 10.00 30-Aug 15.00 28-Aug 30.92 27.49 30.98 42.89 42.06 Power in KWh (Daily) for Blk 509A Aug 2009 9.00 19.00 20.38 20.77 18.90 24.76 25.11 Performance Ratio (Daily Average) for Blk 508C Aug 2009 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 20.52 20.28 20.09 40.18 38.95 36.67 50.00 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 26.88 30.00 9-Aug 8-Aug 23.14 25.00 7-Aug 6-Aug 15.14 20.00 5-Aug 4-Aug 40.48 39.26 45.00 3-Aug 35.00 31.21 40.00 2-Aug 1-Aug KWh SIM University Performance Ratio(Daily Average) for Blk 508C Aug 2009 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 509A Aug 2009 130 20.64 21.92 29-Aug 30-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 82.88 43.57 46.74 47.63 43.36 47.06 70.92 63.05 56.79 82.83 97.40 101.99 105.10 4.424 5.925 5.867 7.334 9.049 7.852 6.760 10.556 11.738 11.379 10.712 11.824 11.470 2.629 2.792 29-Aug 30-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 5.550 5.954 6.067 5.522 9.033 8.031 7.234 5.995 10.550 12.407 12.991 13.387 12.530 0.000 12.286 2.000 12-Aug 4.000 13-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 9.119 14.000 14-Aug 98.37 71.04 13-Aug 57.58 96.45 46.52 46.06 92.15 12-Aug 11-Aug 10-Aug 61.64 53.07 89.33 3-Aug 4-Aug 8.000 9-Aug 8-Aug 34.73 1-Aug 2-Aug 6.000 7-Aug 6-Aug 5-Aug 84.09 92.83 90.05 12.000 4-Aug 71.59 10.000 3-Aug 2-Aug 1-Aug SIM University Effciency (Daily Average) for Blk 509A Aug 2009 16.000 Series1 Efficiency (Daily Average) for Blk 509A Aug 2009 Performance Ratio (Daily Average) for Blk 509A Aug 2009 Prepared by Maung Maung 2.99 9.23 10.93 Efficiency (Daily Average) for Blk 509B Aug 2009 131 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 5.62 6.01 6.38 5.86 9.16 8.57 7.83 11.35 11.22 12.61 13.75 13.92 10.24 25.77 31.60 37.41 41.14 Power in KWh (Daily) for Blk 509B Aug 2009 Effciency (Daily Average) for Blk 509B Aug 2009 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 19.25 20.56 21.83 20.08 21.26 31.34 29.34 26.81 47.08 47.64 43.17 38.85 38.40 43.20 20.69 20.55 27.45 23.68 39.91 37.82 41.38 40.27 13-Aug 0.00 43.55 10.00 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 15.38 31.90 50.00 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 6.21 12.62 13-Aug 14-Aug 12.72 7.53 12-Aug 6.04 6.00 8.02 12.02 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug KWh 30.00 11-Aug 10-Aug 9-Aug 8-Aug 6.92 11.66 11.05 12.09 11.76 20.00 7-Aug 4.49 9.32 40.00 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug SIM University Power in KWh (Daily) for BLK 509B Aug 2009 60.00 Prepared by Maung Maung 22.59 28.20 30.06 Power in KWh (Daily) for Blk 510A Aug 2009 132 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 39.40 10.24 22.92 21.12 31.34 31.05 28.36 24.14 22.09 22.74 38.85 40.45 45.50 48.88 49.49 45.99 11.67 22.44 33.76 42.42 39.71 13-Aug 0.00 46.13 10.00 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 26.20 30.00 7-Aug 6-Aug 17.57 20.00 5-Aug 4-Aug 44.02 42.83 50.00 3-Aug 34.76 40.00 2-Aug 1-Aug KWh 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug 25.52 51.25 54.42 50.04 53.00 51.57 78.76 78.12 73.14 66.82 64.23 68.41 59.03 51.24 47.98 38.32 79.51 96.84 95.72 93.25 107.62 117.36 118.74 107.68 108.56 102.56 99.48 94.28 103.14 100.37 SIM University Performance Ratio (Daily Average) for Blk 509B Aug 2009 Performance Ratio (Daily Average) for Blk 509B Aug 2009 Power in KWh (Daily) for BLK510A Aug 2009 60.00 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 510A Aug 2009 133 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 51.81 23.48 48.43 52.56 55.36 50.66 52.16 71.88 71.20 65.04 90.37 89.10 92.77 104.36 112.09 113.49 105.48 64.68 68.94 77.43 13-Aug 26.77 51.47 60.08 97.28 91.08 100.95 98.24 105.81 40.30 79.73 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug 2.81 3.20 4.82 5.79 6.29 6.62 6.06 6.24 6.20 6.16 8.25 9.26 8.60 8.52 7.78 7.74 7.19 9.53 12.07 10.66 11.09 10.81 12.48 13.41 13.57 12.61 12.65 11.63 10.89 11.75 SIM University Effciency (Daily Average) for Blk 510A Aug 2009 Efficiency (Daily Average) for Blk 510A Aug 2009 Performance Ratio(Daily Average) for Blk 510A Aug 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 510B Aug 2009 134 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 2.90 5.31 5.64 5.89 5.49 5.76 8.39 7.69 7.02 8.46 9.85 10.16 10.02 11.18 11.95 12.31 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 4-Aug 11.47 21.05 22.35 23.35 33.26 30.46 27.83 33.53 29.31 27.51 22.83 22.29 21.93 25.55 21.75 17.14 33.91 47.35 48.76 40.26 44.30 39.68 39.05 45.61 45.24 42.37 41.35 39.05 42.67 41.49 50.00 14-Aug 11.51 13-Aug 6.94 11.42 5.62 5.53 7.40 10.69 12-Aug 11-Aug 10-Aug 6.45 10.44 3-Aug 2-Aug 1-Aug KWh 30.00 9-Aug 8-Aug 4.33 9.85 10.77 10.47 20.00 7-Aug 6-Aug 5-Aug 4-Aug 8.56 40.00 3-Aug 2-Aug 1-Aug SIM University Power in KWh (Daily) for Blk 510B Aug 2009 60.00 10.00 0.00 Power in KWh (Daily) for Blk 510B Aug 2009 Effciency (Daily Average) for Blk 510B Aug 2009 Prepared by Maung Maung 23.97 30.45 46.98 Power in KWh (Daily) for Blk 508A Sep 2009 135 42.37 9/29/2009 40.01 42.54 9/28/2009 9/30/2009 47.79 45.60 41.72 37.97 32.93 29.23 37.02 38.06 36.07 40.38 42.17 40.98 15.58 27.92 27.05 33.02 45.71 44.05 40.93 0.00 9/27/2009 10.00 9/26/2009 9/25/2009 9/24/2009 9/23/2009 9/22/2009 9/21/2009 9/20/2009 9/19/2009 9/18/2009 9/17/2009 9/16/2009 9/15/2009 9/14/2009 13.99 15.30 31.25 27.35 40.00 9/13/2009 9/12/2009 9/11/2009 9/10/2009 9/9/2009 9/8/2009 9/7/2009 9/6/2009 9/5/2009 9/4/2009 30.00 9/3/2009 20.00 17.31 50.00 9/2/2009 9/1/2009 30-Aug 29-Aug 28-Aug 27-Aug 26-Aug 25-Aug 24-Aug 23-Aug 22-Aug 21-Aug 20-Aug 19-Aug 18-Aug 17-Aug 16-Aug 15-Aug 14-Aug 13-Aug 12-Aug 11-Aug 10-Aug 9-Aug 8-Aug 7-Aug 6-Aug 5-Aug 4-Aug 3-Aug 2-Aug 1-Aug 26.31 39.31 48.28 51.25 53.55 49.88 52.36 51.11 50.29 67.23 76.89 76.28 69.85 63.82 63.10 58.59 77.77 97.86 92.34 91.01 89.55 101.59 108.58 111.82 104.61 103.75 97.16 94.83 89.56 95.15 SIM University Performance Ratio (Daily Average) for Blk 510B Aug 2009 Performance Ratio (Daily Average) for Blk 510B Aug 2009 Power in kWh (Daily) for BLK 508A SEP 2009 Prepared by Maung Maung 101.81 113.93 92.92 103.99 101.56 113.66 Performance Ratio (Daily Average) for Blk 508A Sep 2009 136 89.11 99.73 94.38 105.62 29-Sep 30-Sep 94.75 106.03 91.27 102.14 27-Sep 28-Sep 91.16 102.01 84.56 94.63 67.83 75.91 73.35 82.09 65.11 72.86 53.40 59.76 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 82.45 92.27 16-Sep 104.65 117.11 106.44 119.12 89.94 100.66 93.93 105.11 80.34 89.91 62.18 69.58 60.24 67.41 73.54 82.30 69.60 77.89 60.91 68.16 98.11 109.80 84.77 94.87 34.71 38.84 31.17 34.88 34.07 38.13 38.55 43.15 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep 3.82 4.27 3.43 3.84 3.75 4.20 4.24 4.75 8.35 11.44 9.81 11.62 10.97 10.39 11.67 11.24 10.43 10.04 11.23 10.41 10.23 12.89 13.11 12.51 11.52 11.18 10.15 10.03 9.31 9.03 9.07 10.44 9.89 11.71 11.08 11.57 12.54 12.08 11.20 10.34 9.90 9.33 8.84 8.07 8.02 7.46 7.16 5.88 6.58 6.84 7.66 6.63 7.42 9.06 8.57 8.09 7.66 6.70 7.50 10.80 SIM University Efficiency (Daily Average) for BLK 508A SEP 2009 Efficiency (Daily Average) for Blk 508A Sep 2009 Performance Ratio (Daily Average) for BLK 508A SEP 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 508B Sep 2009 137 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 4.00 4.47 3.54 3.96 3.91 4.38 9.26 11.66 13.05 13.30 10.33 11.56 9.42 10.54 10.16 11.37 10.21 11.43 10.59 11.86 10.50 11.75 9.95 11.13 11.32 12.67 10.36 10.54 10.12 9.42 9.04 11.89 10.48 11.73 10.06 11.26 7.27 8.13 8.18 9.16 7.56 8.46 6.05 6.77 7.02 7.86 6.84 7.65 8.28 9.26 9/30/2009 9/29/2009 9/28/2009 9/27/2009 9/26/2009 9/25/2009 9/24/2009 9/23/2009 9/22/2009 9/21/2009 9/20/2009 9/19/2009 9/18/2009 9/17/2009 9/16/2009 9/15/2009 9/14/2009 9/13/2009 9/12/2009 9/11/2009 9/10/2009 9/9/2009 9/8/2009 9/7/2009 9/6/2009 9/5/2009 9/4/2009 9/3/2009 16.31 14.46 15.96 20.00 8-Sep 7-Sep 6-Sep 11.35 12.70 9/2/2009 9/1/2009 30.84 46.19 40.58 42.85 43.22 41.66 41.44 38.42 42.15 37.76 48.50 47.59 42.76 38.43 36.88 33.38 29.65 24.70 28.64 27.90 33.77 46.32 44.28 41.04 35.95 31.80 27.68 30.00 5-Sep 9.86 10.85 12.14 50.00 4-Sep 6.78 7.59 7.79 8.72 8.81 40.00 3-Sep 2-Sep 1-Sep SIM University Power in kWh (Daily) for BLK 508B SEP 2009 10.00 0.00 Power in KWh (Daily) for Blk 508B Sep 2009 Effciency (Daily Average) for Blk 508B Aug 2009 Prepared by Maung Maung 9/9/2009 Power in KWh (Daily) for Blk 508C Sep 2009 138 9/30/2009 39.54 30-Sep 29-Sep 28-Sep 26-Sep 25-Sep 24-Sep 23-Sep 42.05 0.00 9/29/2009 10.00 9/28/2009 Power in kWh (Daily) for BLK 508C SEP 2009 27-Sep Performance Ratio (Daily Average) for Blk 508B Sep 2009 42.51 40.45 40.48 37.50 41.53 22-Sep 21-Sep 20-Sep 19-Sep 74.36 68.68 76.86 83.21 73.90 61.57 93.89 9/27/2009 30.09 32.57 45.18 40.65 94.13 95.79 91.92 96.27 95.43 92.78 92.30 90.38 85.57 115.13 101.15 106.80 107.74 103.83 103.29 95.77 120.89 118.62 105.07 102.88 9/25/2009 9/26/2009 9/24/2009 9/23/2009 9/22/2009 28.51 23.57 18-Sep 85.59 84.11 9/21/2009 9/20/2009 9/19/2009 27.50 71.39 63.79 9/18/2009 15.35 17-Sep 16-Sep 15-Sep 14-Sep 32.20 9/17/2009 36.99 37.10 46.63 13-Sep 36.03 102.29 106.59 115.45 110.37 108.02 106.00 9/15/2009 9/16/2009 35.98 47.78 12-Sep 11-Sep 62.15 82.14 9/14/2009 9/13/2009 13.54 41.80 69.55 84.17 95.25 91.40 9/12/2009 9/11/2009 0.53 9-Sep 10-Sep 35.55 9/10/2009 26.77 39.79 61.64 8-Sep 7-Sep 103.16 9/8/2009 40.00 32.45 45.29 6-Sep 79.26 75.21 9/7/2009 14.96 29.98 5-Sep 68.99 70.83 9/5/2009 9/6/2009 9/4/2009 30.00 26.75 4-Sep 3-Sep 80.08 9/3/2009 50.00 44.43 2-Sep 89.62 98.62 9/2/2009 9/1/2009 20.00 17.08 1-Sep SIM University Performance Ratio (Daily Average) for Blk 508B Sep 2009 66.03 55.01 36.32 Prepared by Maung Maung 103.87 116.24 92.51 103.53 100.63 112.62 Performance Ratio (Daily Average) for Blk 508C Sep 2009 139 88.07 98.56 93.66 104.81 29-Sep 30-Sep 94.69 105.97 90.17 100.91 27-Sep 28-Sep 90.09 100.82 83.52 93.47 67.02 75.00 72.55 81.20 63.49 71.06 52.50 58.75 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 82.40 92.21 61.26 68.55 80.13 89.68 106.43 119.11 93.10 104.19 100.87 112.88 98.95 110.74 16-Sep 34.19 38.26 30.16 33.76 59.63 66.74 72.28 80.89 66.78 74.73 59.59 66.69 82.63 92.47 1.17 1.31 33.31 37.28 38.05 42.58 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep 0.13 0.14 3.76 4.21 3.32 3.71 3.67 4.10 4.19 4.69 9.07 11.10 11.71 13.11 10.42 11.66 10.3111.53 9.69 10.85 10.29 9.91 11.09 9.92 11.10 10.1811.39 11.07 12.39 11.43 12.79 10.18 10.15 9.19 12.42 10.8912.19 10.2511.47 9.87 9.09 8.82 6.99 7.82 7.98 8.93 7.37 8.25 5.78 6.47 6.74 7.54 6.56 7.34 7.958.90 6.56 7.34 7.358.22 SIM University Efficiency (Daily Average) for Blk 508C Seo 2009 Efficiency (Daily Average) for Blk 508C Sep 2009 Performance Ratio (Daily Average) for Blk 508C Sep 2009 Prepared by Maung Maung Efficiency (Daily Average) for Blk 509A Sep 2009 140 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 3.77 4.22 3.41 3.81 3.74 4.19 11.07 12.39 10.28 11.51 9.17 10.26 9.96 11.14 9.91 11.09 10.28 11.50 10.27 11.50 9.65 10.80 6.99 7.82 7.99 8.94 7.41 8.29 5.83 6.53 6.53 7.31 9.21 10.30 9.00 10.07 11.44 12.80 11.57 12.95 10.24 11.46 9.78 10.94 8.79 9.83 7.60 8.50 6.60 7.39 30.22 45.17 46.66 40.43 40.63 37.39 41.95 36.70 32.61 28.51 23.80 26.65 37.57 47.21 41.79 39.88 35.85 31.00 26.94 45.16 43.42 39.36 41.92 15.38 13.89 15.26 30.90 26.43 9/29/2009 9/30/2009 0.00 41.93 10.00 9/28/2009 9/26/2009 9/27/2009 9/25/2009 9/23/2009 9/24/2009 9/22/2009 9/20/2009 9/21/2009 9/19/2009 9/17/2009 9/18/2009 9/16/2009 9/14/2009 9/15/2009 9/13/2009 9/11/2009 9/12/2009 9/10/2009 9/8/2009 9/9/2009 9/7/2009 9/5/2009 9/6/2009 9/4/2009 17.09 40.00 6-Sep 11.07 12.39 9/2/2009 9/3/2009 9/1/2009 30.00 5-Sep 6.48 7.25 7.57 8.48 10.64 11.91 50.00 4-Sep 4.19 4.69 20.00 3-Sep 2-Sep 1-Sep SIM University Power in kWh (Daily) for BLK 509A SEP 2009 Power in KWh (Daily) for Blk 509A Sep 2009 Effciency (Daily Average) for Blk 509A Sep 2009 Prepared by Maung Maung 28.03 36.62 Power in KWh (Daily) for Blk 509B Sep 2009 141 9/30/2009 39.98 30-Sep 29-Sep 28-Sep 42.64 9/29/2009 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 27-Sep Power in kWh (Daily) for BLK 509B SEP 2009 42.82 Performance Ratio (Daily Average) for Blk 509A Sep 2009 9/28/2009 41.10 9/27/2009 37.93 42.51 45.88 41.22 30.86 33.22 28.98 24.15 9/26/2009 9/25/2009 9/24/2009 9/23/2009 9/22/2009 9/21/2009 9/20/2009 9/19/2009 9/18/2009 9/17/2009 47.52 48.29 42.55 45.96 44.59 40.56 37.58 15.71 14.12 33.08 27.36 9/16/2009 0.00 37.78 10.00 9/15/2009 9/14/2009 9/13/2009 9/12/2009 9/11/2009 9/10/2009 9/9/2009 9/8/2009 15.43 31.00 40.00 9/7/2009 9/6/2009 9/5/2009 9/4/2009 26.99 30.00 9/3/2009 20.00 17.48 50.00 9/2/2009 9/1/2009 1-Sep 34.26 38.34 30.94 34.63 33.99 38.04 100.58 112.56 96.70 108.22 59.37 66.44 103.92 116.30 63.49 71.06 72.63 81.28 67.31 75.33 93.44 104.57 83.29 93.21 90.49 101.26 90.06 100.79 93.40 104.52 93.36 104.48 87.67 98.11 100.60 112.59 83.68 93.64 81.75 91.49 79.84 89.35 105.14 117.67 93.08 104.17 88.84 99.42 69.06 77.28 60.01 67.15 58.86 65.87 68.82 77.02 53.01 59.33 38.06 42.59 SIM University Performance Ratio (Daily Average) for Blk 509A Sep 2009 Prepared by Maung Maung 94.69 105.97 102.20 114.37 Performance Ratio (Daily Average) for Blk 509B Sep 2009 142 89.06 99.67 94.98 106.29 29-Sep 30-Sep 95.37 106.73 91.54 102.44 27-Sep 28-Sep 91.81 102.74 84.48 94.55 68.75 76.93 74.00 82.82 64.55 72.24 53.80 60.21 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 83.71 93.68 16-Sep 105.83 118.44 107.55 120.36 90.35 101.11 94.77 106.05 102.37 114.56 81.56 91.28 62.44 69.87 60.94 68.20 73.67 82.44 69.04 77.26 60.12 67.29 99.32 111.15 84.15 94.18 34.99 39.16 31.44 35.19 34.37 38.47 38.93 43.56 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep 6.87 7.69 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 9.11 9.80 11.70 10.97 10.45 11.74 11.27 10.49 10.07 11.66 11.31 10.40 10.42 13.03 13.24 12.59 11.65 11.25 10.31 10.10 9.30 8.47 22-Sep 7.56 8.14 21-Sep 5.92 6.63 7.10 7.95 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 10.36 10.04 11.83 11.13 11.67 12.61 12.23 11.26 10.93 10.43 9.94 9.21 8.98 9.07 15-Sep 3.85 4.31 3.46 3.87 6.71 7.50 9.26 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 8.50 8.11 4-Sep 5-Sep 7.60 3-Sep 3.78 4.23 4.28 4.79 6.62 7.40 2-Sep 1-Sep SIM University Efficiency (Daily Average) for Blk 509B Sep 2009 Efficiency (Daily Average) for Blk 509B Sep 2009 Performance Ratio (Daily Average) for Blk 509B Sep 2009 Prepared by Maung Maung 7.41 8.29 7.98 8.93 25-Sep 10.66 11.93 10.9812.28 29-Sep Efficiency (Daily Average) for Blk 510A Sep 2009 143 30-Sep 28-Sep 27-Sep 10.8012.09 9.97 11.15 10.6711.94 11.80 13.20 26-Sep 24-Sep 7.71 8.63 8.639.66 6.45 7.22 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 10.99 9.82 18-Sep 12.1513.60 11.10 9.46 10.59 12.3213.79 10.90 12.20 10.5611.82 17-Sep 4.36 4.88 3.99 4.47 7.21 8.07 8.72 9.76 9.92 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 4.27 4.78 11.9013.32 9/29/2009 9/30/2009 9/28/2009 9/26/2009 9/27/2009 44.07 43.50 44.78 40.67 43.52 35.20 32.57 49.58 50.27 48.13 40.47 40.08 38.60 9/24/2009 9/25/2009 26.33 30.23 44.46 48.57 46.39 46.39 43.10 35.57 29.44 9/23/2009 17.78 16.29 17.41 33.57 28.96 31.46 9/21/2009 9/22/2009 9/19/2009 9/20/2009 9/18/2009 9/16/2009 9/17/2009 9/14/2009 9/15/2009 9/13/2009 9/11/2009 9/12/2009 9/9/2009 9/10/2009 9/8/2009 9/6/2009 9/7/2009 9/4/2009 9/5/2009 19.73 9/3/2009 40.00 8-Sep 7-Sep 6-Sep 7.10 7.94 8.23 9.21 0.00 19.73 10.00 9/1/2009 9/2/2009 20.00 11.37 12.72 11.37 12.72 30.00 5-Sep 4.84 5.41 4.84 5.41 50.00 4-Sep 3-Sep 2-Sep 1-Sep SIM University Power in kWh (Daily) for BLK 510A SEP 2009 Power in KWh (Daily) for Blk 510A Sep 2009 Efficiency (Daily Average) for Blk 510A Sep 2009 20.00 Prepared by Maung Maung 29.78 Power in KWh (Daily) for Blk 510B Sep 2009 144 41.89 44.16 9/29/2009 9/30/2009 44.03 9/28/2009 42.53 9/27/2009 39.73 43.70 47.19 42.90 32.45 34.77 30.51 26.04 48.56 49.34 9/26/2009 9/25/2009 9/24/2009 9/23/2009 9/22/2009 9/21/2009 9/20/2009 9/19/2009 9/18/2009 9/17/2009 39.26 9/16/2009 38.17 41.92 43.60 39.30 17.58 16.08 29.24 47.41 45.71 9/15/2009 9/14/2009 9/13/2009 9/12/2009 9/11/2009 9/10/2009 9/9/2009 9/8/2009 34.89 40.00 9/7/2009 9/6/2009 9/5/2009 28.74 0.00 9/4/2009 10.00 28.74 30.00 9/3/2009 17.28 19.39 50.00 9/2/2009 9/1/2009 98.15 109.84 107.21 119.98 Performance Ratio (Daily Average) for Blk 510A Sep 2009 Power in kWh (Daily) for BLK 510B SEP 2009 30-Sep 99.75 111.63 96.89 108.43 29-Sep 90.58 101.36 72.55 81.19 78.41 87.75 70.08 78.42 58.65 65.63 89.26 99.89 90.14 100.88 110.44 123.59 111.98 125.31 96.00 107.43 99.04 110.83 108.19 121.07 85.97 96.20 67.32 75.34 65.56 73.37 79.23 88.66 74.78 83.69 64.50 72.18 103.32 115.62 103.32 115.62 96.94 108.48 39.60 44.32 36.28 40.60 38.79 43.41 43.94 49.18 43.94 49.18 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 5-Sep 4-Sep 3-Sep 2-Sep 1-Sep SIM University Performance Ratio (Daily Average) for Blk 510A Sep 2009 Prepared by Maung Maung Performance Ratio (Daily Average) for Blk 510B Aug 2009 145 30-Sep 29-Sep 28-Sep 94.72 27-Sep 93.30 110.07 109.76 104.41 98.36 98.07 106.00 106.93 95.55 108.93 26-Sep 97.34 88.50 99.04 72.28 80.89 77.43 86.66 67.96 76.05 105.10 117.62 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 57.99 64.90 87.44 97.85 66.34 74.24 109.91 123.00 108.16 121.04 16-Sep 17-Sep 108.68 104.50 85.02 95.14 93.38 97.11 87.53 97.96 39.16 43.82 35.83 40.09 65.13 72.89 105.59 118.16 101.80 113.92 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 77.71 86.97 64.01 71.64 4-Sep 5-Sep 64.01 71.64 38.48 43.07 43.19 48.34 3-Sep 2-Sep 1-Sep 30-Sep 29-Sep 28-Sep 27-Sep 26-Sep 25-Sep 24-Sep 23-Sep 22-Sep 21-Sep 20-Sep 19-Sep 18-Sep 17-Sep 16-Sep 15-Sep 14-Sep 13-Sep 12-Sep 11-Sep 10-Sep 9-Sep 8-Sep 7-Sep 6-Sep 4.31 4.82 3.94 4.41 9.54 10.78 10.27 11.49 10.82 12.11 10.79 12.08 10.42 11.66 10.51 11.77 10.90 10.71 11.99 11.57 13.32 12.94 11.90 10.77 9.74 7.95 8.90 8.52 9.62 9.63 10.47 12.09 13.53 13.00 10.69 11.96 11.62 11.20 12.54 10.28 11.50 9.36 7.48 8.37 6.38 7.14 7.30 8.17 7.17 8.02 8.55 9.57 7.04 7.88 4-Sep 5-Sep 7.04 7.88 4.23 4.74 4.75 5.32 3-Sep 2-Sep 1-Sep SIM University Efficiency (Daily Average) for Blk 510B Sep 2009 Efficiency (Daily Average) for Blk 510B Sep 2009 Performance Ratio (Daily Average) for Blk 510B Sep 2009 SIM University Prepared by Maung Maung 146