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Renewables are not truly CO2-free because sometimes the sun is not shining and the wind is not blowing. And then renewable fans have to rely on peaker natgas p
by zozbot234 2y ago
Renewables are not truly CO2-free because sometimes the sun is not shining and the wind is not blowing. And then renewable fans have to rely on peaker natgas plants, that emit CO2 (though less of it on a kWh basis than oil or especially coal).
- j-pb 2y agoDunkelflaute is extremely rare if you have a sufficiently large grid [0]. That's the beauty of european collaboration, you can have german and spanish renewable jump in for each other, norwegian pumped hydro in the super rare case that neither have wind or sun, and french nuclear, should that happen while the storage is empty and you don't feel like reducing steel production for the day (which is btw also a totally valid way to balance the grid). 0: https://de.wikipedia.org/wiki/Dunkelflaute https://de.wikipedia.org/wiki/Dunkelflaute
- zozbot234 2y ago> Dunkelflaute is extremely rare Sure, the whole issue is that a reliable grid has to cope with "extremely rare" events too. So having nuclear plants to provide baseload power in such circumstances can be important.
- adrianN 2y agoJust run the peaker plants on hydrogen once you have enough overcapacity on sunny/windy days to actually fill some storage.