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.

You can cut it, but how? If you don’t have a system in place, thousands of private home will be injecting power into the grid because they don’t know any better. In extreme cases it could overload the grid. Not really explode, but cause voltage spikes, trip breakers, and ultimately (and somehow ironically) cause a blackout as the grid protection mechanisms kick in.

I Germany all new installations need to be able to be remotely controlled to prevent grid feed in when there’s too much production.

Disclaimer: hobby self-taught solar panel enthusiast, not an electrician or grid engineer.

Yeah the remote connection to the local utility would be the obvious answer.

People with Nest systems can enroll into “Energy Saver” programs that start the AC at 3pm to cool the house early for the energy spike at 5pm when many get home from work. All you get is a minor credit per year.

If that shit works they can setup a system for solar.

Of course you can… but it’s not there right now. Imagine your AC needs a physical switch to flip. No incentives can overcome that, and new equipment is expensive.