Auchintirrie Community Owned Wind Turbine

Project

Empowering the Isle of Bute

Why BCP?• 11% of Bute’s households

were surveyed & 85% were supportive of Community-based wind farms

• To generate renewable energy

• Community Owned• To create wealth for the

community of Bute

££

£

How to create wealth?

• Generating and selling renewable energy to the grid and gifting all profits to a community trust – with the projected profit at average of £50,000 per year over 20 years

• Providing community benefit as mandated by the Scottish Government

• Provide a reasonable rate of return on community members investment to the project as profit income is generated

• Support a local independent farmer’s livelihood

What is the project?

We are presently working on a two 250kW turbine project at

Auchintirrie Farm.

Join Bute Community Power with a £1 Voting Share so we can achieve

our goal of:

• Generating average of £50,000 per year over the next 20 years for a Bute Community Investment Trust

• Invest in the community owned Auchntirrie Wind Turbine Project for a competitive return on investment

Request to Bute Community Council• Resolution of Support that notes:

– 47m turbine is within the parameters of A&B Council Landscape Capacity Study for Bute

– Negligible Environmental & Cultural Heritage impact

– Supports the sustainable development policy of A&B Council

• Join as a member• Visit to Wind Towers (Scotland) & Tangy Wind

Farm, Campbeltown, 28th April 7am-5pm – Sponsored by SSE

FAQBird Mortality

Financial Model

Efficiency

Environmental

Tidal Energy

Shadow Flicker

Community Attitude

Consumer Attitude

Community Profit

Turbine Specification

Turbine Noise

Visual Impact

Subsidies & Support

Community Attitude88% of Scots want a future based on

renewable (BBC 23 April 2012)

Bute residents survey 2009• 85% were supportive of Community-

based wind farms www.tzcb.org.uk/wp-content/uploads/2010/04/Research-Results-15th-July-10.pdf

Bute residents survey 2011• 94% support the vision of Bute 100%

renewablehttp://www.tzcb.org.uk/?p=1193

Wintering Bird Survey• Only three greylag flights, all comprising very low numbers of

birds, passed within 200 m of the turbine layout at risk height. • No Greenland white-fronted geese flew within 200 m of the

turbine layout.• Utilising SNH avoidance rates for geese species, ( 99.8 %) it

was considered that there was insufficient at risk flight activity to warrant collision modelling

• Hen harrier was the only species with sufficient at risk flight activity considered to warrant collision modelling.

• Results of this modelling indicate collision risk of greater than 1:300 year

• It is extremely unlikely that there will be any collision events within the life of the development.

Estimates of Avian Mortality 2010-2030

Sovacool, Benjamin K. (2013). "The avian benefits of wind energy: A 2009 update". Renewable Energy 49: 19. doi:10.1016/j.renene.2012.01.074.

Matching Renewable Electricity Generation with Demand, University of Edinburgh, produced for the Scottish Executive, February 2006, Delivering the New Generation of Energy – Routemap to Scottish Renewables, Scottish Renewables, 2006

Generation Type Bird Deaths /GWh

Wind Turbine 0.269

Nuclear Power Plant 0.416

Fossil Fuel Plant 5.18

Comparison of Bird Mortality from Anthropogenic Causes

“The RSPB supports significant growth in onshore and offshore wind power generation”1

Buildings59%

Power lines14% Cats

11%

Automobiles9%

Pesticides7%

Communica-tion Tower

0%Wind

Turbines0%Airplanes

0%

1 http://www.rspb.org.uk/ourwork/policy/windfarms/2 Erickson, W.P., G.D. Johnson & D.P. Young. 2005. A summary and comparison of bird

mortality from anthropogenic causes with an emphasis on collision. USDA Forest ServiceGen. Tech. Rep. PSWGTR-191: 1029–1042. www.fs.fed.us/psw/publications/documents/psw_gtr191/Asilomar/pdfs/1029-1042.pdf

Financial ModelAnnual power generated by one 250kW turbine =24hrs x 365 days x 250kW x 40% load factor

= 876,000kWh

Annual Income = 876,000 x (£0.1230 FiT + 0.0477 ET)= £ 149,533.20

Annual income for 2 Turbines = 2 x £ 149,533.20= £ 299,066.40

Power Generation Efficiency

• Betz Law calculates maximum efficiency of turbine as 56.3%

• Modern turbines can achieve 75-80% of Betz law

Solar

Coal

Deisel Engine

Wind Turbine

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

20.0%

31.8%

32.6%

32.7%

38.5%

42.9%

44.5%

87.5%

Power Generation Efficiency

http://www.eia.gov/tools/faqs/faq.cfm?id=107&t=3http://en.wikipedia.org/wiki/Betz%27s_law

Energy Return on Investment

EROI is essentially cumulative energy produced as a ratio of cumulative energy required to commission, operate and decommission a power source. A higher EROI value indicates a better performing system. Denholm, Paul and Gerald Kulcinski, "Net energy balance and greenhouse gas

emissions from renewable energy storage systems," Energy Center of Wisconsin Report 223-1, University of Wisconsin-Madison - Madison, June 2003

NaturalGas

PV

Coal

NuclearFission

Wind

0 5 10 15 20 25

4

6

11

16

23

Energy Payback Ratio for Various Generation TechnologiesLife Cycle Analysis of GE

Generation Technologies Comparison

Environmental Impact Comparisons

Denholm, Paul and Gerald Kulcinski, "Net energy balance and greenhouse gas emissions from renewable energy storage systems," Energy Center of Wisconsin Report 223-1, University of Wisconsin-Madison - Madison, June 2003

NaturalGas

PV

Coal

NuclearFission

Wind

0 100 200 300 400 500 600 700 800 900 1000

469

39

974

15

14

CO2 Emission Rates for Various Generation Technologies

Tonnes CO2 Equiv Per GWhe

Life Cycle Analysis of GE Generation Technologies Comparison

Consumer Attitudesto Wind Farms

86% of Scot’s asked stated the natural landscape and countryside scenery were important factors to them when taking holidays or short breaks in the UK (10% said it was neither important or unimportant, 2% said it unimportant).However 83% Scots said that the presence of a wind farm would not affect their decision about where to visit or where to stay on a UK holiday or short break (17% claiming that it would affect their choices).

http://www.visitscotland.org/pdf/Insights%20Wind%20Farm%20Topic%20Paper%28nov2013%29.pdf

86%

83%

Invest in tide?The Hydrographic Office 1992, Tidal Stream Atlas Firth of Clyde and Approaches NP222 indicates that the tidal currents in the Firth of Clyde and specifically around the Island of Bute does not have access to significant tidal resources• Speed >1.5m/s• Depth >20m

Towards Zero Carbon Bute – Tidal Energy Report. Aecom Energy 20 July 2011

Community Profit & Benefit

Projected Community Profit over 20 years =

£1,000,000.00

Projected Community Benefit over 20 years

= £5,000 x 0.5 x 20 =

£50,000

Turbine Specifications

Sound Model

• Wind speed 12.5m/s

• Omni directional downwind

• Key threshold of 35dB

Zone of Theoretical Visibility

Location Theoretical Visibility

Cnoc an Rath No St. Blanes No Kames Castle No Mount Stuart No Rothesay Pavilion No Rothesay Castle No Winter Gardens No Wester Kames Castle No UCB Not Significant

Location Theoretical Visibility

Straad Not Significant Rothesay No East Colmac Significant Townhead Not Significant Port Bannatyne No Ardbeg No Craigmore Not Significant Montford No

Shadow Flicker

• The contours mark the number of hours of potential impact to an individual window at 2m above ground level.

• Each contour represents 50 hours of shadow flicker events per annum

UK Energy Support & Subsidies

Natural Gas38%

Coal; 1%

Petrolium; 5%

Nuclear24%

Renewables32%

http://www.publications.parliament.uk/pa/cm201314/cmselect/cmenvaud/61/61vw.pdf

Subsidies & Support 2011 (£ millions)

Natural Gas £3,631

Coal £85

Petrolium £539

Nuclear £2,300

Renewables £3,100