3 ms·
The maths of MW and MW/H are pretty straightforward. It can supply the peak MW power (875) continuously for the duration in hours rated, that MWH value (3320) d
by ggm 2y ago
The maths of MW and MW/H are pretty straightforward. It can supply the peak MW power (875) continuously for the duration in hours rated, that MWH value (3320) divided by that peak. So 3.8 hours. Or, it can supply half that rating for twice as long. Or a quarter for four times as long. and so forth. If you want more power you can supply for shorter period of time, or less for longer. So it could presumably supply a gigawatt more briefly.
Which means, allowing for not being always completely full, and normal sunlight hours, it can supply a couple of hundred MW of reliable power continuously, across day/night cycles. That's about 38,000 households equivalent.
Obviously summer, winter, cloud play a part. Nonetheless this is a massive investment in power supply, and a massive outcome.
I'm guessing that they will be using the battery to supply frequency control and reactive power, and to soak other surplus energy at market pricing, and for arbitrage so it will be a mixture of outcomes.
- Gibbon1 2y ago3.8 hours storage at name plate power is roughly the 4 hours I've been able to guesstimate. I think California added 3GW name plate of batteries in the last 12 months. Just based on the historical supply. Yesterday Batteries peaked at 7.2GW. A year ago it was 4.2 GW. https://www.caiso.com/todays-outlook/supply https://www.caiso.com/todays-outlook/supply Far as I can tell it's being used to shift solar power into the early evening. I think that California has about 6GW of wind power.
- ZeroGravitas 2y agoGraphs of record charge and discharge for California grid batteries: https://www.gridstatus.io/records/caiso?record=Maximum%20Battery%20Charging https://www.gridstatus.io/records/caiso?record=Maximum%20Bat... https://www.gridstatus.io/records/caiso?record=Maximum%20Battery%20Discharging https://www.gridstatus.io/records/caiso?record=Maximum%20Bat...
- Gibbon1 2y agoThat's totally shows how fast things are changing. Great thank you.