Finnland wärmt die größte Sandbatterie der Welt auf, und die Wirtschaft sieht ansprechend aus
Finland warms up the world’s largest sand battery, and the economics look appealing
Finnland wärmt die größte Sandbatterie der Welt auf, und die Wirtschaft sieht ansprechend aus
Finland warms up the world’s largest sand battery, and the economics look appealing
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It doesn’t look like much, but Finland recently flipped the switch on the world’s largest sand-based battery.
Yes, sand.
A sand battery is a type of thermal energy storage system that uses sand or crushed rock to store heat. Electricity — typically from renewable sources — is used to heat the sand. That stored heat can later be used for various ends, including to warm buildings.
The economics are compelling, and it’s hard to get any cheaper than the crushed soapstone now housed inside an insulated silo in the small town of Pornainen. The soapstone was basically trash — discarded from a Finnish fireplace maker.
GG to Elon..
„Polar Night didn’t disclose the project’s cost, though the raw materials are cheap and the structure itself isn’t particularly complex. A much smaller prototype built a few years ago cost around $25 per kilowatt-hour of storage, the company estimated at the time. It’s likely the new version is cheaper. Lithium-ion batteries cost around $115 per kilowatt-hour.“
Well « sand » is a little of a misnomer.
This is all about insulation…
Like if a plane was all about seats 🙂
This kind of battery i always thought off… great stuff
https://www.abc.net.au/news/science/2022-07-19/sand-battery-debuts-in-finland-world-first-heat-thermal-storage/101235514
So this could be done places where there is a large heating need and times of day where there is very cheap clean energy? Obviously only really viable for large groups of houses or very large buildings, and cases where clean energy production doesn’t correspond to solar energy from hot days.