New technologies and expanding electrification mean a growing need for both common and uncommon metals, such as rare earth metals. One of Europe's largest deposits is in Norra Kärr outside of Gränna.
Earth Sciences
Dec 15, 2021
0
3
While renewable energy is needed, wind turbines cannot, for example, be built too close to residential areas due to noise and landscape factors. Then again, erecting turbines in uninhabited areas makes nature more fragmented ...
Environment
Dec 07, 2021
0
27
A new electrocatalyst called a-CuTi@Cu converts carbon dioxide (CO2 ) into liquid fuels. As reported by a team of Chinese researchers in the journal Angewandte Chemie, active copper centered on an amorphous copper/titanium ...
Materials Science
Nov 15, 2021
0
33
Ocean currents, propelled by kinetic energy from the wind, are the great moderators of our climate. By transferring heat from the equator to polar regions, they help make our planet habitable.
General Physics
Nov 11, 2021
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45
The production of renewable energy is increasing every year. But after analyzing the growth rates of wind and solar power in 60 countries, researchers at Chalmers University of Technology and Lund University in Sweden and ...
Environment
Oct 18, 2021
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734
"We need to invest heavily in renewable energy and ensure that it becomes competitive in international markets," says Espen Moe.
Environment
Oct 12, 2021
2
0
The answer to climate change—or at least part of it—is blowing in the wind, according to research published Aug. 28 in the journal Climate.
Environment
Sep 22, 2021
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253
Every winter, thousands of emaciated seabird carcasses are found on North American and European shores.
Plants & Animals
Sep 13, 2021
0
16
In the wake of the COVID-19 pandemic, we must not squander the clean energy gains that were made through reduced human activity and economic downturn during the periods of lockdown and beyond. That is the message from recent ...
Environment
Sep 13, 2021
2
32
Ocean currents, propelled by kinetic energy from the wind, are the great moderators of our climate. By transferring heat from the equator to polar regions, they help make our planet habitable.
Earth Sciences
Aug 19, 2021
0
1000
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
