MISSION

Renewables

Intro

How it works

Harnessing wind as a renewable energy source involves converting the power within a moving air mass (wind) into rotating shaft power. Modern wind turbines contain rotors fitted with aerodynamic blades, which utilise lift forces caused by the wind on the blades to turn the shaft. The shaft rotates inside a generator (located behind the rotor and blades) that generates electricity.

Cost and maintenance Systems for households or businesses can cost between £5,000-£25,000, including turbine, mast, inverters, storage (if required) and installation; depending on the size and type of system installed. A 6kW system can provide 12,000-15,000 units of electricity (kWh) per year depending on site and location.

This system would reduce carbon dioxide emissions by between 5-6.6 tonnes per year. Small turbines for battery charging applications for caravans, boats etc can cost between £200-£600.

There are very few maintenance requirements. A service check every few years may be required. Turbines can have a life of up to 20 years. For battery storage systems, typical battery life is around 6-10 years depending on the type, so batteries may have to be replaced at some point in the system's life.