Comment Comment by Ciantic Finland has an operational "sand battery", which primary purpose is heating. That was discussed in HN few months ago [1].When it comes to this article, I doubt the 500x cheaper statement, we would see these already everywhere if that were the case.[1]: https://news.ycombinator.com/item?id=44295132 parent Ciantic 1 year ago
When it comes to this article, I doubt the 500x cheaper statement, we would see these already everywhere if that were the case.
[1]: https://news.ycombinator.com/item?id=44295132