It's not a question of ideas, it's a question of money. Building things to use excess power costs a lot of money.

Or in a pinch: just run big-ass space heaters. Seriously. It's a stupid way to burn off excess power, but it's dirt simple and cheap. Just have a big array of resistive heaters out in an empty field somewhere with a high fence around it. Need to burn off an extra GW? Run it through massive heating elements and burn burn it off. It's a stupid waste of good energy, but as an emergency backup, it's not a bad option. It's trivially easy to dispose of huge amounts of excess electricity if you just run the mother-of-all space heaters. Run your stupid giant resistive heater at the bottom of a lake for even better effect.

Yeah I understand storing and using the energy is obviously a better solution than to stop producing the energy. But in the short term, in the context of large solar arrays, until we have storage solutions or ways to use* the excess, covering the panels up or turning them to face the ground for a bit doesn't seem like a very big logisticical hurdle.

There are many roof top solar systems on people's houses. That's what I'm referring to regarding logistical nightmare.

Are there really enough residential rooftop panels for this to even be a problem? And couldn't it be solved just by installing a battery for your home to store the excess? Again, if you could explain how this would be a logistical nightmare for my ignorant self, I'd appreciate it.

What incentive does a politician have to support nationalizing the power grid? It wont be a super splashy issue to tackle so it isnt worth doing it for the credit, and the different power companies of the world will just put their money into buying opposition to your effort anyways.

That's the problem with capitalism is that any single thing you would want to do that would impact some cocksuckers capital, and the threat alone makes it a necessity to pay to win in congress. Usually the only way stuff like this happens is because there is new capital entering the market that can afford to donate against the old capital to overtake them. Its just rich assholes all the way down.