Mark Luntley - Westmill Windfarm
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Transcript of Mark Luntley - Westmill Windfarm
The Westmill project
This talk
• Westmill history• The windfarm
– The turbines– History– Construction– How we earn
money
• Cooperative ownership
Why wind?
• Doesn’t pollute:– no ash or CO2– No radioactive waste
• Free fuel (once turbines are built)
• Abundant wind in UK• Safe • Easy to decommission
Source: http://www.yes2wind.com/whywind.html
Westmill - thanks
Westmill would not exist today without the:– vision of landowner Adam Twine– foresight of Baywind– dedication of Energy4All– support from Mid-counties Co-op
The completed project
Westmill
• 85 hectare working organic farm
• 1% of site used for turbines
• Construction energy recovered < 1 year
Key facts - funding
• Co-operative owned - 2,500 members– 50% within 50 miles– £1,800 average
investment
• Raised £4.6m & borrowed £3.4m from cooperative bank
Five turbines
• 49 metres to hub• 30 metre blades• Turn 19 times a
minute• Two generators (one
for light winds)• Each can generate
1.3MW (1,300kw)• Almost silent
In an average year we:
• Work @ 22% of capacity
• Generate @ 12 Gwh
(12,000,000 kwh)• Power 2,500 homes• Displace 10,000
tonnes CO2 • Earn close to £1m/yr
Total construction budget
Turbines £5.2m
Foundations and roads £1.4m
Grid Connection £0.6m
Other costs £0.6m
Total £8.0m
Budgeted funding:
Shareholders’ funds £4.6m
Bank loan (Coop bank) £3.4m
Total funding £8.0m
Electricity sales
To green suppliers:
• 3 turbines - Good Energy
• 2 turbines - Mid counties coop (2011)
Building a windfarmJuly 07
Aug Sept Oct Nov Dec Jan 08 Feb Mar Apr
Contracts signed ♦
Mobilisation
Compound/ tracks
Foundations
Sub Station
Cabling
Grid Connection
WTG Delivery
Erection
Commissioning
Take Over ♦Operations Phase
The Site
Excavations
Reinforcement
WTG Delivery
QuickTime™ and a decompressor
are needed to see this picture.
Inside a turbine
• Base converts 690v to 33,000 v• Ladder allows access to top• Maintained by Siemens
Cooperative ownership
• Industrial and provident
• Equal voice
• AGM
• Transparency
• Culture
Related developments
• WESET
• Energy futures
• Westmill solar plans
• Low carbon West Oxford
Questions?