Energy storage overcapacity can cause power system instability and blackouts, too
Briefly

Spyros Foteinis underscores a crucial point: while insufficient energy storage capacity leads to wasted renewable energy, the risks of excessive storage have largely been ignored in discussions about power-system security.
The imbalance between generated renewable energy and available storage can lead to not only energy wastage but also significant disruptions if storage capacities exceed safe operational limits.
Read at Nature
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