What the hell is a ‘sand battery?’ And why am I so damn excited?

The Next Web
By Cate LawrenceJul 7, 2022, 11:00 am179 pts
When you think of energy solutions, you might not imagine 100 tonnes of builders’ sand piled inside a huge silo. But one company has actually found that sand can be the secret sauce to energy storage, as it can store heat for months. How does this work? Finnish startup Polar Night Energy has developed a…

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