Energy & Green Tech
From wind farms across the African coastline to geothermal projects in the east African rift valley, a new United Nations climate report on Monday brought the continent's vast clean energy potential into the spotlight. If ...
Apr 4, 2022
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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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Energy & Green Tech
Geothermal energy has long been the forgotten member of the clean energy family, overshadowed by relatively cheap solar and wind power, despite its proven potential. But that may soon change—for an unexpected reason.
Mar 21, 2022
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Energy & Green Tech
Australia's electricity system is on the road to becoming 100% renewable as coal-fired power stations close and wind and solar takes their place.
Mar 18, 2022
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Energy & Green Tech
Solar farms along tsunami-ravaged coastlines, green energy "micro-grids" and the experimental production of non-polluting hydrogen: 11 years after its nuclear nightmare, Japan's Fukushima region is investing in a renewable ...
Mar 9, 2022
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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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Energy & Green Tech
Nuclear power generation can play a crucial role in helping the world reach a key goal of zero carbon emissions by the middle of the century, especially in countries with low wind resources, according to new work in Nature ...
Feb 14, 2022
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Energy & Green Tech
Not that long ago, critics of renewable sources of energy had a point when they claimed wind and solar power cost more and were less dependable than fossil fuels, mostly because they depend upon the wind blowing and the sun ...
Feb 10, 2022
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Energy & Green Tech
On the banks of the River Humber in northern England, the winds of change are blowing through Hull, where factory workers busily craft turbine blades in a green revolution.
Feb 6, 2022
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Energy & Green Tech
To cut U.S. greenhouse gas emissions in half within a decade, the Biden administration's goal, the U.S. is going to need a lot more solar and wind power generation, and lots of cheap energy storage.
Jan 19, 2022
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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
