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Rust Offers a Cheap Way to Store Wind, Sun Power
Consider a wind farm generating electricity at two in the morning. Because most people are asleep, there’s little demand for electricity on the grid, so energy produced could become a surplus with little to no value. Storing this excess energy in some kind of battery is a way to conserve the renewable energy for use during peak times, but methods for doing so are cumbersome and expensive.
But now researchers have developed a more affordable and efficient way for energy companies and homeowners to store and reuse wind and solar power. Curtis Berlinguette and Simon Trudel, two chemistry professors from the University of Calgary report a breakthrough that makes it possible to store renewable energy in battery-like devices known as hydrogen fuel cells, which have an energy density over 150 times higher than a lithium-ion battery.
by Nic Halverson
Full Story: http://news.discovery.com/tech/alternative-power-sources/rust-cheap-store-wind-sun-power-130329.htm
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