I have made a few videos about the amazing idea of a sand battery, pioneered by a company in Finland. So with a looming Europe trip, I reached out and asked if they’d have me on site to see it for myself! On this episode, we’ll going hands on with Polar Night Energy, and seeing their various prototype sand batteries. Unlike chemical batteries that you’re probably thinking of, sand batteries have some very interesting use cases and advantages. And then there’s district heating, so let’s see if we can’t figure this out together!