California's utility battery discharging record. +2x Y/Y, now 7 GW at peak, and up from virtually 0 in 2020. https://t.co/E3HTIxMBAc Starting to meaningfully smooth the duck curve. https://t.co/tGf3w6jxqv

We need very large (multi-gigawatt-hour) storage for big cities and megacities, but so far the only viable option to serve them is pumped hydro storage (PHS): it uses cheaper nighttime electricity to pump water from a low-lying reservoir to high-lying storage, and its discharge provides instantly available generation.[76] With renewably generated

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