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foota • yesterday at 8:03 PM • 2 replies • view on HN

"Wind and solar power do not provide dispatchable power and they therefore do not replace conventional power plants. Germany isn't keeping their coal-fired power plants and they're not building new gas-fired power plants despite the energy transition but because of it."

4 hour storage battery operated renewables are now cost competitive with gas plants.


Replies

jttnr • yesterday at 9:06 PM

Exactly, but it is not a binary thing. The most capable solution is a combination of both. The batteries can kick in within seconds to bridge a couple of hours, while the gas turbines have enough time to fire up slowly as the batteries get close to empty and there is still no wind or sun.

leonidasrup • yesterday at 9:22 PM

The problem is that you need energy storage for much longer times then 4 hours.

" Most of these events occur from October to February; typically 50 to 150 hours per year, a single event usually lasts up to 24 hours "

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