Sand batteries, salt batteries, solid state - energy storage tech is evolving rapidly and becoming more effective and cheaper, fast. There is still a lot of upside potential here. Fossil fuels cannot compete. This is real energy independence.
Koreen Brennan
The world’s largest sand battery got through Finland’s harshest winter in years. 2,000 tonnes of sand, heated to 500-600°C by cheap power, feeding district heating in Pornainen.
And it worked.
Result from one install: oil down 100%, emissions down 70%.
Industrial process heat is the real prize.
