Ecotricity’s wind turbines produced almost a fifth more electricity last year compared to 2010.
The green energy firm said a comparison of the same 51 turbines across 16 sites, ranging from Scotland to Norfolk and Somerset, showed they had produced 18 per cent more electricity in 2011 than the previous year.
Ecotricity said that in total it had produced enough energy to power more than 37,500 homes in 2011.
Dale Vince, founder of Ecotricity, said the UK had 40 per cent of Europe's total wind resource and more use should be made of the clean source of power. "You could say we are the Saudi Arabia of wind energy and this resource gives Britain the potential to be energy-independent again," he said.
The company is planning to build 19 new turbines at five sites this year, using money from customer bills and £10 million raised through an "ecobond" scheme which allows the public to invest in green energy. Another 78 windmills are seeking planning approval.