It's actually common to be in that situation where the grid is paying pennies on the dollar and you have extra generation. Most grid-tie systems are in that boat.
Suddenly you find yourself looking for something to spend power on so it doesn't go to waste.
Solar power is not free.
You can decide to not fix the panel that was being used to power a GPU.
Or you could sell the power back.
Or you could put it in a battery bank for when the sun is down.
Or, if none of those are the case and you just have excess power that's useless for anything but a GPU, then you prepaid for the GPU.
I love that we have solar panels, but we weren't gifted them. Using power has a cost.
It's actually common to be in that situation where the grid is paying pennies on the dollar and you have extra generation. Most grid-tie systems are in that boat.
Suddenly you find yourself looking for something to spend power on so it doesn't go to waste.