Kilchattan
| Status: | Appeal |
|---|---|
| Project Capacity: | 13.6MW |
| No. Turbines: | 16 |
| Hub Height: | 55m |
| Blade Length: | 26m |
| Homes Powered: | 8750 |
| Annual CO2 savings: | 20000 tonnes |
Tir Mostyn & Foel Goch
| Status: | Operational |
|---|---|
| Project Capacity: | 21.3MW |
| No. Turbines: | 25 |
| Turbine Type: | Gamesa G52 |
| Hub Height: | 49m |
| Blade Length: | 26m |
| Homes Powered: | 15600 |
| Annual CO2 savings: | 35700 tonnes |
Scout Moor
| Status: | Operational |
|---|---|
| Project Capacity: | 65MW |
| No. Turbines: | 26 |
| Turbine Type: | Nordex N80 |
| Hub Height: | 60m |
| Blade Length: | 40m |
| Homes Powered: | 45000 |
| Annual CO2 savings: | 103300 tonnes |
Key
- Operational / In construction
- Consented
- In planning/development
- <10MW
- 10-30MW
- >30MW
RidgeWind has been developing and operating wind farms in the UK since 2003. We currently have 480MW of wind power in various stages of development, which would be enough to power almost 300,000 homes and could save over 683,000 tonnes of CO2 from being released into the atmosphere – every year. To learn more about a specific wind farm, just click on the project name or on the map.
Calculations
Figures for electricity generation, homes powered and CO2 are estimates using the latest figures assimilated from reports by Department of Energy & Climate Change (DECC) as well as recommendations from the industry body Renewable UK. A nominal capacity factor of 30% is assumed unless otherwise specified due to more localised evidence.
To work out the wind farm calculations: 8760 hours per year multiplied by 0.3, multiplied by number of MW in the scheme gives total annual generation. Divide by 4.2MWh (4200kWh) to give number of homes powered. To calculate CO2 estimates, we have used the latest figure from DECC for the composition of plant in electricity generation of 545g CO2/kWh. Annual generation worked out as before, multiplied by 545 before dividing by 1000 gives you the amount of CO2 saved in tonnes.
E.g. A 10MW wind farm:
Annual Generation – 8760 x 0.3 x 10MW = 26280MWh per annum
Homes Equivalent – 26280/4.2 = 6257 homes
Carbon Dioxide savings – (26280 x 545)/1000 = 14323 tonnes
It is difficult to predict actual CO2 savings as the UK fuel mix is not in steady state and it is not possible to measure displacement by green generation. However, 545g CO2/kWh takes into account all UK plant and the proportion of electricity supplied with the knowledge that wind power displaces marginal plant such as coal or gas rather than base load such as nuclear etc. These figures are therefore to be considered guidelines and place the likely savings in the right range. These figures are updated as and when updated information becomes available.
In addition, you may work out that some of the figures do not tally – we always endeavour to ensure we do not overstate the potential generation or savings. To this extent, we have been advised in our Environmental Statements for some sites to use different capacity factors deemed more appropriate for the region. In these instances the numbers shown will represent those published with a planning application. As adhered to above, for some of our sites we have a rationale for using a different capacity factor. This will be due to onsite wind measurement calculations or from using regional capacity factors that are deemed more appropriate. There are also instances where figures have changed since the written documents, as such these may be outdated also.