I mean, a surplus in the electricity grid is actually sort of a problem, especially if you don’t have any way to store the extra energy.
we can just put a white blanket on top of the panels…

I’m ignorant of the mechanism of solar panels and electrical grids…do they just explode if they are set up and not draining power?

Because why can’t you just cut the inflow of electricity on a signal? I’d appreciate actual answers.

Yes solar panels and most renewables can be turned off easily if there is too much energy on the grid. The term for this is “curtailment”. Some energy sources can’t be turned off easily, like nuclear, large coal plants, and combined cycle gas turbines. So you will tend to turn off the easy things before the hard things.

The only major problem here is that this upsets the capitalists that own the generation; they don’t want to pay for stuff that isn’t producing money at every instance that it could be producing money. There are no real technical reasons why you can’t curtail wind and solar plants whenever you need to.

Worth noting that a large amount of “renewables bad” you’ll see is fossil fuel propaganda too, so be careful there.

Yeaaaah, I hate that. A lot of the structures that everyone says are shite seem to be propped up by “solutions” that create and perpetuate the problems they “solve.”