Wind power. View of a large wind farm in California. Wind turbines are an important form of alternative power for electricity generation. They produce no emissions and have a low running cost. Modern turbines,which may vary the pitch of the blades,may adjust to varying wind speeds automatically,ensuring a more constant supply. The main drawbacks of wind power are a high initial capital cost and noise from the turbines. This area of California,San Gorgonio Pass,has about 3500 wind turbines,producing 600 million kilowatt-hours of electricity per year,enough to supply a town of 100,000 homes | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fraser, Simon |
Taille de l’image : | 3543 px × 2695 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |