Wind energy is a good example of how small-scale renewables can work. The electricity generated can cover part of the electricity needs of building(s). This potential varies depending on several factors, which specialists can help to identify. A good place to start is to check the long-term annual mean wind speed in the target region, to get a sense of the site's suitability for small-scale wind energy.

Wind speed is the prime factor affecting electricity generation. Sites should be checked for suitability. Some locations are either sheltered or naturally not windy. Higher carbon and electricity savings are usually achieved in rural areas, because of the presence of stronger winds. Wind speeds also increase with height above ground, so the higher the wind turbine is mounted, the more power can be generated.

The excess generated electricity can potentially be sold into the national grid, and help to recover the costs of the installation more quickly.