I the campervan, I have no use for excess energy. And there is plenty. Unfortunately I cannot connect the panels on the van to the house. I was thinking about mining, but the capital costs are too high.
This is me these days.
VRM is more popular than YouTube on my phone.
https://nostrcheck.me/media/public/nostrcheck.me_7441968229195001731695401630.webp
Discussion
There are boilers with 2 independent heating spirals. So you can connect your van to one of them and the other one will stay connected to the house.
This way you can use van panels to help heat the water in your house.
I can't connect them, I park the car further away from the house