Energy & Green Tech
Moving rows of solar panels farther apart can increase efficiency and improve economics in certain instances by allowing greater airflow to whisk away some heat, according to a new analysis.
Oct 25, 2022
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2755
Engineering
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 ...
Engineering
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.
Aug 11, 2022
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59
Business
Across the United States, local wind and solar jobs can fully replace the coal-plant jobs that will be lost as the nation's power-generation system moves away from fossil fuels in the coming decades, according to a new University ...
Aug 10, 2022
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5026
Engineering
When the power grid goes down, there's a step-by-step recovery process—a "blackstart" that up to now has depended on power from gas or hydro turbines spinning away inside a power plant.
May 31, 2022
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383
Energy & Green Tech
Researchers at Pacific Northwest National Laboratory (PNNL) have developed a control system that could make most of America's homes more capable partners in managing the nation's electricity resources.
May 17, 2022
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186
Energy & Green Tech
A major challenge for producers of electricity from solar panels and wind turbines is akin to capturing lightning in a bottle. Both solar and wind increasingly generate electricity amid little demand, when market prices are ...
Apr 21, 2022
4
717
Energy & Green Tech
Renewable energy prices have fallen by more than 70 percent in the last decade, driving more Americans to abandon fossil fuels for greener, less-polluting energy sources. But as wind and solar power continue to make inroads, ...
Apr 12, 2022
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90
Energy & Green Tech
Texas can be a model for the nation on how to effectively replace coal with wind and solar for the state's energy needs while meeting environmental goals, according to new research by Rice University engineers.
Mar 21, 2022
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442
Energy & Green Tech
Deadly high winds that struck Northern Europe last week generated a record level of wind energy for Poland, covering some 30% of the demand in a country where most of its electricity comes from coal, Poland's power distribution ...
Feb 21, 2022
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11
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
