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New research shows renewables are more profitable than nuclear power
(www.pv-magazine.com)
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this post was submitted on 30 Aug 2023
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Renewables cannot be spun up. You have to massively over build to do that. And even then, you're still depending on availability of sun and wind.
If you need more power than is available, it's done with natural gas peaker plants at 10x the normal cost of electricity.
On the flip side, a stable base load of nuclear, can be spun up and down over the day to meet expected load.
That's exactly the suggestion, over-build renewables right now to get to net zero, then fill out the generation portfolio with nuclear. The demand will only go up, so that excess renewables will eventually be used to capacity anyway. The study is laying out what the priority should be right now, when climate change has already got its foot well in the door.
Renewables can effectively be spun up or down as long as they have batteries. That way, they can usually be generating as much energy as possible regardless of demand.
In that case it's the batteries being loaded and unloaded, not the renewables.
Storage can be connected to the grid anywhere and charged whenever power is cheap - from whatever sources are generating at that time. It is effectively an independent investment - assuming your on-grid / grid scale.
As far as i know the only major renewable electricity generation that is intrinsically linked to storage is reservoir based hydro with reverse pumping capability though even that increases costs and is a quite situation dependent if you want a lot of peaking power..
Nuclear fanboys could equally argue to add batteries so as to convert baseload into shape, or peaking.
is our battery tech even up to this?
Yes. There's numerous live examples which have been in place for years (Horndale South Australia for example)
Yes. It costs less and requires less mining to use the most expensive and wasteful storage option. The only reason there aren't more is a lack of sufficient investment in VRE required to make them useful.