|
The site would consist of six two megawatt turbines, with tower heights of approximately 80 metres and rotor diameters of approximately 92 metres.
These dimensions will provide a maximum height to blade tip of approximately 126 metres, a typical size of modern turbines. This turbine type was chosen to match the wind climate of the area.
| Number of turbines |
6 |
|
| Rating of turbines |
2 |
MW |
| Wind farm size |
12 |
MW |
| Predicted output |
28,908 |
MWhr p.a. |
| Average Households supplied |
6,585 |
|
| Carbon dioxide saved |
12,430 |
tonnes p.a. |
| |
|
The capacity factor used in these calculations is 27.50%.
|
Once a turbine is in operation it will be monitored remotely with maintenance personnel making periodic visits. A turbine is expected to have an operational life of approximately 25 years. After this time it will be decommissioned in order to return the site to its previous state.
How the figures are calculated
1) Predicted Output
capacity of wind farm (MW) x capacity factor
x
hours per annum (8,760 hours)
=
predicted output (MW hours per annum)
‘Capacity factor’ is the % of the wind farm’s maximum output expected over a year. 100% would mean that the wind turbines were generating their maximum output all the time, a little like driving a car at maximum speed all the time. In reality, the wind is usually blowing and the wind turbines generate electricity most of the time, at a greater or lesser proportion of their maximum possible output.
2) Households Supplied
predicted output
÷
average UK electricity consumption per household per annum
=
number of households electricity needs supplied
3) Carbon dioxide emissions avoided
wind farm output
x
carbon dioxide savings per kWH
=
carbon dioxide emissions avoided
|
Animals and wind energy schemes co-exist amicably
|
