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Giant Gravel Batteries Could Make Renewable Energy More Reliable

Monday 26th April 2010

Newly designed giant gravel batteries could be the solution to the on-off nature of wind turbines and solar panels. By storing energy when the wind stops blowing or the sun stops shining, it is hoped the new technology will boost to renewable energy and blunt a persistent criticism of the technology - that the power from it is intermittent.

Electricity cannot be stored easily, but a new technique may hold the answer, so that energy from renewables doesn't switch off when nature stops playing ball. A team of engineers from Cambridge think they have a potential solution: a giant battery that can store energy using gravel.

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Alok Jha
The Guardian, Monday 24th April

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