In fact, the turbines were able to reach an efficiency of 53%, which is just shy of Betz's Law, a theorem that says no wind turbine would be able to convert more than about 59.3% of wind energy into ...

Bill McKibben speaks during the Sun Day renewable energy fair, Stuyvesant Square Park, Manhattan. McKibben has written books for 35 years, is considered an environmental and climate thought leader, ...

There’s nothing clean nor cheap about wind power. Without government largesse, aka taxes and credits, it doesn’t get built. Without rare earth mining and the “cost“ in environmental damages, it ...

Add Yahoo as a preferred source to see more of our stories on Google. Ed Miliband has committed to 95pc clean power by 2030 - Zara Farrar/Downing Street The Government has slashed forecasts for the ...

Octopus Energy and Ming Yang Smart Energy, a world-leading wind turbine manufacturer, have signed a groundbreaking partnership to deliver cheap, clean wind energy and bring down bills for British ...

Facing staunch local opposition and federal roadblocks, new wind project development is teetering on the brink, despite growing power demand. Even Iowa, the nation’s most wind-powered state, is ...

Danish wind turbine maker Vestas has shelved plans to open its biggest factory in Poland, the company said in an emailed statement to Reuters on Saturday, citing weaker-than-expected demand in Europe.