The US added 20.2 GWh of batteries in a quarter, about 96 seconds of peak demand (electrek.co)
SEIA and Benchmark counted 20.2 GWh in Q2 2026, with Arizona at a record 6.2 GWh, while residential storage fell 27%. A commenter divided it by US peak demand and got 96 seconds.
Another said the battery's real job is milliseconds-fast smoothing of spot prices, not backup.
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