UK growth in small wind
Richard Caldow
Field operations manager
Who Are Proven Energy
• Global market leader in small wind (1.5kW to 50kW). Strong brand recognition
• 20 years manufacturing (in Scotland) and installing turbines globally.
• Robust, simple design – durability & reliability. Product certified to highest standards.
• Over 3,500 installations in 60 countries.
• Opening our North American headquarters in Elgin, IL this summer.
•
Servicing, training, assembly.
• In excess of 30 million run hours annually
• Contributing above 10% of global installed small wind capacity
• Currently shipping in excess of 1MW per month
• Customer base ranging from large companies to communities and individuals
• Well-established international reseller network
Company confidential
History
• 1980 - Gordon Proven left nuclear industry to form Proven Energy providing bespoke engineering solutions
• 1985 – Designed first Proven wind turbine
• 1992 – Installed prototype of down-wind model
• 1998 – Proven Energy’s 100th installation in Africa
• 2006 - LCA first investment
• 2008 – 2000th install, LCBP funded, England
• 2009 – Turbine on every continent
• 2010 – first “megawatt month”
Company confidential
Products
Company confidential
Proven Energy Turbine
Technical advantages of Proven
Down wind
Unique passive speed and power control
No active yaw control required – turbines automatically point into wind
High yield in kWh pa – yield density.
Use of a direct-drive generator and thus no gearbox. Quiet and reliable
54 / 70 m/s survival wind speeds.
Company confidential
Markets and customers
Markets
Agriculture
Telecoms
Communities
Energy
Utilities
Corporates
Transportation
Government
Education
Offshore
NGO
Military/Police
Example Customers
Independant farmers and landowners
BT,Orange,Vodafone, T Mobile, Motorola
Isle of Eigg community, Falkland Islands Development Company
Shell,BP
Western Power, Hong Kong Electric
Mitie, Big Yellow Storage, Sainsbury
Liverpool Airport, Network Rail
Blackpool Council, DEFRA, NHS, Environment Agency
University of Heidelberg
Shell
Princess Elisabeth research station (Antartica), RSPB, National Animal Welfare Trust
US Military (Iraq), New Zealand police
Company confidential
Certification – why certify?
o Not a legal requirement in the UK but.....
o Is required to access incentives - Feed in tariff, which is a generation
tariff.
o Standardised method of comparing turbines.
o Normalised for tower height
o Normalised for altitude.
o Declaration of yield. RAE (ref annual energy) and AEP (annual
energy production)
o Peak or rated power is a poor discriminator. Wind speed / power
curve shape.
Certification
•
In UK, to BWEA standards, tied with IEC61400
•
IN US, to AWEA standards (also tied to IEC), reciprocal arrangements with BWEA
•
Testing done either by independent organisation or using own calibrated site, but under
independent scrutiny. (BS17025)
•
Certification by accredited authority (BS 45011)
•
Requires power and performance, noise, safety and function, design file review and
manufacturing process assessment (annually)
•
ALSO REQUIRES 6 MONTHS TROUBLE-FREE RUNNING and 2500 hours of power
production.
Power and yield
• Power is measured in kW and is the rate of doing work
• Yield is the amount of energy and is measured in kWh
• Think of a hose filling a bucket; the speed of the water
coming out of the hose can be likened to power and the
amount in the bucket can be likened to the yield
• AEP is the estimate of the annual yield from a turbine based
on the power curve (1 min average) of the turbine, the mean
wind speed at hub height and the probability distribution.
The bigger the AEP, the more there is in the bucket
Company confidential
Probability Curves for wind
0.2
0.18
0.16
0.14
Probability
0.12
4m/s
0.1
6m/s
8m/s
0.08
10m/s
0.06
0.04
0.02
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Mean Wind Speed
Company confidential
Power Curve – Proven 35-2
Power V Wind Speed, P35: Myres Hill 02-06 Sept10, RAW DATA
18
16
14
12
Power, kW
10
Pwr_ave_1-minute
8
Pwr_min_1Hz
Pwr_max_1Hz
6
4
2
0
0
-2
2
4
6
8
10
12
14
16
Wind speed,
Wind speed
m/s atm/s
hub height
Company confidential
Power Curve – Proven 35-2
16
14
Power kW
12
10
8
P35-2
Proven 35-2
6
4
2
0
0
2
4
6
8 10 12 14 16 18 20
Mean hub height wind speed m/s
22
24
Company confidential
Formal statements of power
• Rated Power
– 11m/s 1 min averaged data
– Sea level air density
– Proven 35-2 = 12.1kW
• Peak Power
– X m/s 1 min averaged data
– Sea level air density
– Proven 35-2 = 13.7kW
• Instantaneous peak power
– 1 second data
– Sea level air density
– Proven 35-2 = 17kW
Company confidential
Games played with power
• Unless power is stated in accordance with MCS and
IEC61400-12, then beware!
• Peak instantaneous power is often peddled as rated power
• Averaging periods are ignored or foreshortened
• Wind speed is omitted and may be very high
• One company drew its power curve outside the
instantaneous point!
• AEP and Yield derived from anything but properly
determined and specified power curves is suspect
Company confidential
0.16
16
0.14
14
0.12
12
0.1
10
0.08
8
0.06
6
0.04
4
0.02
2
0
Power kw
Probability
5m/s Mean Wind Speed = 23,200kWh
Probability of wind
P35-2
power
Proven
35-2curve
power curve
0
0 1 2 3 4 5 6 7 8 9 101112131415161718192021222324
Mean hub height wind speed m/s
Company confidential
8m/s Mean Wind Speed 55,000kWh
0.1
16
0.09
14
0.08
12
0.07
0.05
8
0.04
6
Power kw
Probability
10
0.06
Probability
Proven
35-2 Curve
power curve
P35-2 Power
0.03
4
0.02
2
0.01
0
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Mean hub height wind speed m/s
Company confidential
5m/s Mean Wind Speed 23,200kWh
0.16
25
0.14
20
0.1
15
Power kw
Probability
0.12
0.08
10
0.06
Probability
A N Other power
20kW power curve
0.04
Proven 35-2
P35-2
5
0.02
0
0
0
2
4
6
8 10 12 14 16 18
Mean wind speed m/s
20
22
24
Company confidential
Power as a descriptor
• Power is a poor descriptor of turbine performance
• Peak power and Instantaneous power are meaningless in
comparing yield
• Power is vanity, yield is sanity
Company confidential
MCS and FIT update
•
•
•
•
•
•
Three certified machines, 90 on TL
Seven completed the “matrix” - two are Proven Energy
Six Month rule now clear, no loss of FIT
One machine removed from TL for safety reasons (Coemi)
General agreement TL is a mess, and difficult to enforce
Future developments
–
–
–
–
TL demise on 31 December 2010, Extensions – ?
Version 3 of the standard to revise noise and include towers
Certification for > 200sq metres
Degression in 2012 and review in 2013
Company confidential
Installations of interest
Corrour Railway Station – Rannoch Moor
Proven Energy’s first installation in 1993, at Scotland’s highest railway station. The
Proven 2.5kW was installed to power platform lights.
Installations of interest
Installations of interest
Installations of interest
Questions