Grid stability is one of the greatest challenges to the expansion of renewable energy. When wind turbines produce more power than the grid can absorb, they must be curtailed, which means compensation payments for operators for the lost energy. Nearly €600m was paid to them in Germany in 2024 alone; in UK, operators even received twice as much. On the other hand, fossil fuel-burning power stations have to go on line during a lull to cover the power demand. Smart energy storage technologies a...