Wind power in Spain reaches historic high

Wind power became Spain's main source of electricity for the first time ever this month, in a country renowned for its focus on renewable energy, the power-generating authority REE said Thursday.

China to raise rare earths production this year

(AP) -- China said Thursday it will increase this year's production quota for rare earths but gave no sign it might reverse plans to cut exports of the exotic metals needed by high-tech industry.

Upgrading the vanadium redox battery

Though considered a promising large-scale energy storage device, the vanadium redox battery's use has been limited by its inability to work well in a wide range of temperatures and its high cost. But new research indicates ...

Higher energy yield with torque vectoring gears

Wind turbines have a problem: Depending on the wind's force, the rotational speed of the turbine and thus of the generator changes. However, alternating current must be fed into the grid with precisely 50 (or 60) hertz. Typically ...

Study gathers comprehensive wind info to improve renewable energy

Meteorological equipment typically used to monitor storms could help power grid operators know when to expect winds that will send turbine blades spinning, as well as help them avoid the sudden stress that spinning turbines ...

Giant offshore windfarm opens in Denmark

One of the world's biggest offshore wind farms opened Tuesday in southeastern Denmark, its operator, German power giant E.ON, said.

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