WorldÂ’s First Solar Plant To Generate Electricity Even At Night

subscribe

The most obvious criticism of solar energy is that it doesnÂ’t work very well when the sun is down. The new Gemasolar heliostatic plant doesnÂ’t have that problem, on account of a vat of molten salt that keeps it running through 15 hours of dark.

More than 2600 concentrically arranged mirrors at the Gemasolar installation just outside of Seville, Spain concentrate solar energy towards a centrally located molten nitrate salt tank. As the rays converge, they super-heat the salt to over 900C, causing water around the tank to boil and drive steam turbines. In addition, any superfluous heat generated during the day is stored within the liquefied salt. It acts like a giant thermal battery for driving the turbines at night and during overcast days — up to 15 hours at a time with no sunlight. Seville, Spain, however, is one of the sunniest areas in Europe, so that doesn’t happen very often.

The $US410 million Gemasolar plant just opened and has a potential output of 20 megawatts, though it is currently operating below that capacity officials expect it could reach 70 per cent capacity by 2012. It’s the largest solar power station of its type in Europe, and it has an annual production total or roughly 110 GWh/year — enough to power 25,000 homes and reduce atmospheric CO2 emissions by more than 30,000 tons a year.

The combination of thermal energy storage and sunny weather guarantees that the Gemasolar plant can operate for at least 6500 hours a year, up to three times longer than other renewable sources.

Related News

Germany shuts down its last three nuclear power plants

BERLIN - Germany is no longer producing any electricity from nuclear power plants.

Closures of the Emsland, Isar II, and Neckarwestheim II nuclear plants in Germany were expected. The country announced plans to phase out nuclear power in 2011. However, in the fall of 2022, with the Ukraine war constraining access to energy, especially in Europe, Germany decided to keep these existing nuclear reactors operating for an additional few months to bolster supplies.

“This was a highly anticipated action. The German government extended the lifetimes of these plants for a few months but never planned beyond that,” David Victor, a professor of…

READ MORE
toronto-power-outages-persist-for-hundreds-after-spring-storm

Toronto Power Outages Persist for Hundreds After Spring Storm

READ MORE

doug-ford-new-stance-on-wind-power-in-ontario

Doug Ford's New Stance on Wind Power in Ontario

READ MORE

wind-power-surges-in-us-electricity-mix

Wind Power Surges in U.S. Electricity Mix

READ MORE

coal pile

New England Emergency fuel stock to cost millions

READ MORE