better make it a sand battery: https://www.euronews.com/green/2024/03/10/sand-batteries-could-be-key-breakthrough-in-storing-solar-and-wind-energy-year-round ht

better make it a sand battery: https://www.euronews.com/green/2024/03/10/sand-batteries-could-be-key-breakthrough-in-storing-solar-and-wind-energy-year-round https://www.euronews.com/green/2024/03/10/sand-batteries-cou...