British Wind Energy Association (BWEA) average wind across UK is approx. 5.6m per second (m/s).

Windsave WS1000 based on an average wind speed 5.6m/s it will produced on average an annual range 0.8 - 1.2MWhr per year. (1MWhr = 1000KWhr). A standard system will cost approx £1,799 inc. survey and installation.

Quietrevolution QR5 based on an average wind speed 5.9m/s will generate 10MWhr per year and will cost approx. £30,000 per turbine.