Solar energy stored in ‘sand batteries’ could help Finns through long, cold winters that will get harsher after Russia cut off gas and electricity supplies. The new technology was developed by the founders of Polar Night Energy, young Finnish engineers Tommi Eronen and Markku Ylönen, but can be used globally.
While several other research groups are testing the limits of sand as green energy storage, the two are the first to …
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Source image: Polar Night Energy / Euronews.com
