Welcome to First Hydro 16 July 2010 First Hydro overview Approximately 200 employees across four sites Dinorwig – – – – – largest pumped storage plant in Western Europe commissioned 1983 total plant capacity 1,728MW 6 reversible pump/turbines reservoir capacity ~10GWh Ffestiniog – – – – – UK’s first major pumped storage station Commissioned 1963 total plant capacity 360MW 4 separate turbines & pumps reservoir capacity ~1.3GWh Electric Mountain visitor centre Bala House trading office Owned by International Power (75%)/ Mitsui & Co, Ltd (25%) since December 2004 Slide 2 First Hydro Pumped storage principle Pump water overnight Generate electricity during the day Typical cycle efficiency ~70 - 75% Closed hydraulic system Slide 3 First Hydro Asset features Dinorwig mode transition times Originally designed and built to support grid system management Extremely high reliability and availability <30s Spin Gen 6m 3m 6m Rapid speed of response – Dinorwig full output in ~16 seconds – Ffestiniog full output ~60 seconds <12s Generate 6m Shut Down 8m 6m 7m Spin Pump <90s Pump <30s <30s ~25,000 mode changes per year Asset capabilities provide for a diverse range of trading and marketing opportunities 90 Typical start-up times (minutes) 85 80 70 60 60 50 40 30 20 10 0 Slide 4 1.5 Dinorwig 2.5 Ffestiniog CCGT (hot) Coal (hot) First Hydro The role of First Hydro 1. Energy arbitrage - peak/off-peak – valuable peaking capacity – enables efficient running of steam plant overnight 2. Reserve provision – range of timescales (focus on fast) – but, limited storage 3. Frequency control – fast response to plant trips, TV pickups etc. Roles underpinned by plant reliability and dynamic capabilities Buying fuel and selling power exports via the same market Diversity of revenue streams Slide 5 First Hydro Optimising value 2088 MW Capacity Energy limited First Hydro competitive advantage Market features Trading Slide 6 Bilateral, OTC, Power exchanges Half-hourly resolution shape and standard products Balancing Mechanism Ancillary Services Bids and offers accepted on a minute-by-minute basis System services procured by National Grid Adjusts final traded positions to match supply and demand Facilitate system security, and power quality on a secondby-second basis Ability to deliver any half-hourly shape, and notify up to gate closure Attractive, fast dynamics Wide range of offered services including reserve, response, black start, reactive Expertise in prompt/spot trading Ideally suited to covering plant trips, TV pickups etc. High quality offering, uniquely dynamic capabilities First Hydro TV pick up: England vs USA 12th June National Grid FHC Output over same period: 300 250 DINO-1 DINO-6 FFES-1 FFES-4 150 100 50 22:00 21:45 21:30 21:15 21:00 20:45 20:30 20:15 20:00 19:45 19:30 19:15 0 19:00 MW 200 Time Slide 7 First Hydro Dinorwig physical layout Slide 8 First Hydro Dinorwig physical layout Slide 9 First Hydro Power station/unit cross-sections Underground cavern cross section Generator/motor Pump/Turbine Slide 10 First Hydro Market review Significant market volatility Winter 05/06 and throughout 2008 – Positive impact of additional storage on utilisation/value in 2008 Less stress on system in 2009/10 – Impact of new build and recession-led demand reduction – But, some intraday volatility – Retain ability to capture value during ‘system shocks’ Slide 11 First Hydro Market outlook EU’s 2020 targets & UK commitments Material levels of wind generation, new nuclear Large Combustion Plant Directive Closure of 11 GW thermal plant by 2016 Industrial Emissions Directive Limited hours operation on most remaining fossil plant from 2016 Increased EU market integration Greater levels of interconnection with EU Projected New Build DECC – Updated Energy and Emissions Projects, June 2010 GB plant mix to change radically in next 10-15 years Security and balancing challenges Premium on flexibility and reliability Significant impact of wind intermittency Increased reserve requirement Increased spot market volatility Potential for reforms to market framework Slide 12 First Hydro Ancillary services developments Demand for reserve services to increase – Impact of increased wind generation – Intermittency increases system risks across a range of timescales Frequency response requirements to be revised upwards – To be consistent with increased wind generation, new generation nuclear reactors, and large offshore wind connections New providers expected to enter these markets – Dynamic demand response – New OCGT plant FH well positioned, with diverse capabilities Source Data: National Grid “Future Requirements” Slide 13 First Hydro Plant investment strategy Assess changing market environment – Opportunities and challenges Preserve competitive advantage – – – – Maintain current levels of performance Focus on quality of core maintenance Replace or refurbish ageing/obsolescent equipment Retain expertise within business Enhance capabilities – – Improve reliability/availability Increase quality or range of products Invest to maintain assets – Engineering integrity and plant life Invest to improve assets Additional storage Slide 14 New runner Increased automation First Hydro Dinorwig additional stored energy Extension of Marchlyn Mawr planned 2005/6 Permissions granted 2006 Completed October 2007 Increased storage by approximately 8% Short payback period Slide 15 First Hydro Plant automation % Instructions First Hydro despatch is already extremely accurate 40 35 – 99% of instructions are delivered within one minute of required time 30 25 Engineers manually accept instructions from grid and despatch the plant 20 15 Aiming to automate majority of despatch instructions 10 5 0 60+ 45 30 15 0 15 30 45 60+ Seconds early/late Based Jan-Jun 2010. >13000 instructions. 14 not delivered Slide 16 – Improve despatch precision to maintain/enhance competitive advantage – Target 99% within 15 seconds Automate progressively from 2011 to 2014 First Hydro Turbine runner 2008 record utilisation; pumping costs >£100m Re-established project to look at improving cycle efficiency Turbine design optimised in 2007/8 via computational and physical modelling Currently replacing a turbine with completion targeted for Q3 2010 – Unit efficiency gain > 2% – Short payback period Slide 17 First Hydro Summary First Hydro remains highly relevant to the UK system Future market developments will increase the need for response and reserve – Providing critical reserves to support intermittent generation – Ability to “time-shift” excess wind generation off peak – Complement new nuclear build Historic investment in plant has maintained integrity/longevity Current investment program improves market position – Increases competitive advantage – Enhances ability to capture current and future value Slide 18 First Hydro