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      16 hours ago

      Here’s my working. There are about 31.56 million seconds in a year, which I rounded to 30 million, and so

      30 GWh/year
      = 30x10^9 Wh / year
      ~ 30x10^9 Wh / 30x10^6 s
      = 10^3 Wh/s
      = 1 kWh / s
      = 3600 kWs / s
      = 3.6 kw

      I used the duckduckgo autocalculator just now, and 30/31.56*3.6 is about 3.4, so it’s much closer to 3.4kW.

      (It’s not power output, it’s manufactured storage output. I think of it as like a factory that produces 3.4 litre capacity jugs per second, but they’re not jugs, they’re actually batteries. Big ones.)

      They could make a 120kWh battery (which would give a family car a range in the region of 450 miles) every two minutes.