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A comment on South Australia teams with Tesla, Neoen to build world's biggest Li-ion battery.

Re:South Australia teams with Tesla, Neoen to build world's ... by bquinlan on Friday July 07, 2017 @02:06AM (#14716414)
Isn't 129MWh of capacity a bit low for 100MW of peak discharge? That would provide 77 minutes of power at peak discharge. Does anyone have any insight into the rationale for this capacity?
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Re:South Australia teams with Tesla, Neoen to build world's ... by davedx on Friday July 07, 2017 @02:11AM (#14716432)
From what I've seen this is quite common with batteries -- the rated power output number is usually in the same ballpark as the storage number.

I'm no expert, but I would guess it's because most of the time the wind will be blowing somewhat, so you will rarely need peak discharge. Most of the time the batteries will be providing load smoothing and frequency regulation.

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Re:South Australia teams with Tesla, Neoen to build world's ... by itengelhardt on Friday July 07, 2017 @02:39AM (#14716544)
According to Tesla's website (https://www.tesla.com/powerpack) each Powerpack has 50 kW / 210kWh with a scalable inverter power ranging from 50 kVA to 625 kVA.

So they could have gotten a system with 100 MW/420 MWh

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Re:South Australia teams with Tesla, Neoen to build world's ... by tacticus on Friday July 07, 2017 @03:00AM (#14716628)
Really hot days only need a very short time of power to cover the 4 to 6 PM sort of time before the temps drop.
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