diy

What Is a Sand Battery? Polar Night Energy's Sand-based Thermal Energy Storage Explained - YouTube

Polar Night Energy’s sand battery is a large-scale high temperature thermal energy storage that uses sand or sand-like materials as its storage medium. It stores energy in sand as heat. It has three main purposes: To store excess wind and solar energy, to participate in grid balancing markets, and to produce heat and power without burning. The sand battery has a lot of potential to save emissions. Cleaner energy production is possible. Together, we can power the change from fossil fuels to renewable energy.

I really liked the video but one thing irked and annoyed me.

1:34 "A product to convert heat into electricity is being developed."

And they don't explain that at all!