It's quite likely that the cost of idle capital is much higher than the cost of paying others to accept electricity. Depending on the price swings, a battery may be a much better investment.
better make it a sand battery: https://www.euronews.com/green/2024/03/10/sand-batteries-cou...
better make it a sand battery: https://www.euronews.com/green/2024/03/10/sand-batteries-cou...