>Before: The energy from a hydro plants gets wasted when it is night time. Hydro plants can usually turn off relatively quickly. They can be used as pump stora

>Before: The energy from a hydro plants gets wasted when it is night time. Hydro plants can usually turn off relatively quickly. They can be used as pump storage, which is an incredibly efficient way of storing energy - >70% efficiency [1]. [1] https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricit...