Got a heat pump, tbh the best single energy saving thing I could do is switch to gaming on a steamdeck. That may even take around 1/3rd off my already low energy bill. Maybe get a fairly low spec and low energy usage mini PC. How much do you really need to run Rimworld, Factorio or CDDA?

The idea of having 2 PCs for my own gaming seems odd, higher hardware costs but it may pay for its self in energy savings. Should get a meter to check what my PC actually uses when running these games though. Or just drop higher end games entirely?