Related topics: energy · solar panels · solar cells · solar energy · megawatts

Tensions surge over Serbia's small hydropower plants

Deep in the isolated forests of eastern Serbia a digger gouges a channel through the trees for a pipeline to siphon river water, as the coal-reliant country's efforts to clean up its energy habit triggers a hydro "gold rush".

How to build a moon base

Half a century after humans first walked on the moon, a number of private companies and nations are planning to build permanent bases on the lunar surface. Despite the technological progress since the Apollo era, this will ...

Solar weather has real, material effects on Earth

On Sep. 1, 1859, solar astronomer Richard Carrington witnessed sunspots that suddenly and briefly flashed brightly before they disappeared. Just before dawn the next day, auroras erupted over most of the Earth, reaching as ...

Can Switzerland succeed without fossil fuels?

If we want to get rid of fossil fuels nationwide, there is a lot to do. It will be a generation project, that much is clear. Empa researchers Martin Rüdisüli, Sinan Teske and Urs Elber have now calculated how long and steep ...

The competitive benefits of a modern energy system

As the EPA retreats from the Clean Power Plan's goal of reducing greenhouse gases and promotes President Trump's 19th-century coal-fired energy policy, states like New York and California are aggressively modernizing their ...

Clean energy from local producers

Is it possible to boost sales of locally produced solar energy by allowing households to trade it through a peer-to-peer platform? The year-long Quartierstrom research project in Walenstadt is investigating how energy markets ...

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Solar power

Solar power is the result of converting sunlight into electricity. Sunlight can be converted directly into electricity using photovoltaics (PV), or indirectly with concentrating solar power (CSP), which normally focuses the sun's energy to boil water which is then used to provide power. The largest solar power plants, like the 354 MW SEGS, are concentrating solar thermal plants, but recently multi-megawatt photovoltaic plants have been built. Completed in 2008, the 46 MW Moura photovoltaic power station in Portugal and the 40 MW Waldpolenz Solar Park in Germany are characteristic of the trend toward larger photovoltaic power stations. Much larger ones are proposed, such as the 550 MW Topaz Solar Farm, and the 600 MW Rancho Cielo Solar Farm.

Solar power is a predictably intermittent energy source, meaning that whilst solar power is not available at all times, we can predict with a very good degree of accuracy when it will and will not be available. Some technologies, such as solar thermal concentrators with an element of thermal storage, have the potential to eliminate the intermittency of solar power, by storing spare solar power in the form of heat; and using this heat overnight or during periods that solar power is not available to produce electricity. This technology has the potential to make solar power "dispatchable", as the heat source can be used to generate electricity at will. Solar power installations are normally supplemented by storage or another energy source, for example with wind power and hydropower.

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