That is correct. Which is managed by the day ahead market. If you can produce electricity when the grid is strained you will be paid a lot.

The problem with for example new built nuclear power is that it is essentially only fixed costs. Therefore it does not complement renewables at all.

Why should someone buy expensive grid based nuclear power when renewables deliver?

We've seen people starting to muse on the "unraveling of the grid monopoly" now when renewables allow consumers to vote with their wallets rather than accepting whatever is provided.

https://oilprice.com/Energy/Energy-General/The-Quiet-Unravel...