Offshore wind is more expensive than onshore wind, by far.
I’m not in favour of turning anything off until replacements are energised. One of my pet peeves is how fast coal has been switched off, only to be quietly replaced by tons of small, inefficient diesel and gas generators that can be installed near industrial estates and hidden behind fences. These pollute more per MW than the large coal plants they replace.
The goal isn’t just to remove fossil fuel from energy, the goal must be to remove it as quickly as possible. Renewables are the only answer for that specific goal.
Nuclear is needed long term. Existing nuclear plants should be maintained as long as possible, and replacement plants on the same site should have priority over new plants on new sites. However nuclear takes time to build and is very expensive. Renewables are quick and cheap.
Money and time are finite resources; focusing all of it and going hard on current renewable tech is the best way to quickly remove fossile fuels.
Once fossil fuels are gone, then we can see about expanding nuclear.
As quickly as possible is not the only parameter. Consequences is an important one too. We can technically turn off half the grid right now, but there would be severe consequences to that.
Smart grid is a cool thing, but we are far from it still if it needs to work from renewables only.
Well yes, we shouldn’t switch things off before replacements are switched on. But that means we should be targeting replacements that can be switched on quickly. Nuclear is not quick.
That is exactly the kind of fallacy I’m talking about. That somehow renewable and nuclear would be exclusive to each other. Or that renewable can replace all the fossile faster than a nuclear power plant can be built.
We need both. We need to start building nuclear power plants now, and we need to build renewables. This is the best allocation of resources. And this is the only solution out of fossiles.