Engineering

A new way to make electricity using ocean waves

A team of researchers at the Chinese Academy of Sciences has developed a new way to generate electricity using ocean waves. In their paper published in the journal One Earth, the group describes how their new device works ...

Energy & Green Tech

Biden plans floating platforms to expand offshore wind power

The Biden administration on Thursday announced plans to develop floating platforms in the deep ocean for wind towers that could power millions of homes and vastly expand offshore wind in the United States.

Energy & Green Tech

Missouri halts solar tax break as federal incentives expand

As the U.S. government expands incentives for renewable energy, a decision by the Missouri Supreme Court is moving the state in the opposite direction by halting a solar energy tax break that has been on the books for nearly ...

Energy & Green Tech

Report highlights technology advancement and value of wind energy

Wind energy continues to see strong growth, solid performance, and attractive prices in the U.S., according to a report released by the U.S. Department of Energy (DOE) and prepared by Lawrence Berkeley National Laboratory ...

Engineering

Tweaking turbine angles squeezes more power out of wind farms

A new control algorithm for wind farms that alters how individual turbines are oriented into the wind promises to boost farms' overall efficiency and energy output by optimizing how they deal with their turbulent wake.

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Wind power

Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. At the end of 2008, worldwide nameplate capacity of wind-powered generators was 121.2 gigawatts (GW). Wind power produces about 1.5% of worldwide electricity use, and is growing rapidly, having doubled in the three years between 2005 and 2008. Several countries have achieved relatively high levels of wind power penetration, such as 19% of stationary electricity production in Denmark, 11% in Spain and Portugal, and 7% in Germany and the Republic of Ireland in 2008. As of May 2009, eighty countries around the world are using wind power on a commercial basis.

Large-scale wind farms are connected to the electric power transmission network. Smaller turbines are used to provide electricity to isolated locations. Utility companies increasingly buy back surplus electricity produced by small domestic turbines. Wind energy as a power source is attractive as an alternative to fossil fuels, because it is plentiful, renewable, widely distributed, clean, and produces no greenhouse gas emissions; however, the construction of wind farms (as with other forms of power generation) is not universally welcomed due to their visual impact and other effects on the environment.

Wind power is non-dispatchable, meaning that for economic operation all of the available output must be taken when it is available, and other resources, such as hydropower, and standard load management techniques must be used to match supply with demand. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand. Where wind is to be used for a moderate fraction of demand, additional costs for compensation of intermittency are considered to be modest.

This text uses material from Wikipedia, licensed under CC BY-SA