On: US battery manufacturing output continues to break records

[om8]

Cool way to think about GWh/year:

  1 GWh/year = (10 ** 9) / 24 / 365.25 / (10 ** 6) MW = 0.11 MW

  70 GWh/year = 8 MW
  1755 GWh/year = 200 MW
  252 GWh/year = 29 MW

[amalcon → om8]

Haha. Reminds me of how volt-amperes are technically the same unit as watts, but if you see VA in an electrical specification you know it means a different thing than it would if you saw W.

[om8 → amalcon]

> volt-amperes are technically the same unit as watts

volt-amperes are joules

[gnabgib → om8]

Volt-amperes are watts... watts/second are joules

https://en.wikipedia.org/wiki/Watt

[lefra → gnabgib]

You got it backwards, Watts are Joules/second (or joules are Watt•second).

[Skunkleton → gnabgib]

Watts * seconds are joules. Joules is a unit of energy. Watts are power.

[epistasis → om8]

But not a very relevant for batteries, unless talking about discharge only once a year.

Grid batteries are discharged on average 80% per day, if not more. EV batteries... well, probably about 5%-10% per day at most.