There's already RTGs in loads of places on earth. (a few from the USSR are still missing, IIRC) They're not super efficient either, and ones on the last two am

There's already RTGs in loads of places on earth. (a few from the USSR are still missing, IIRC) They're not super efficient either, and ones on the last two american rovers use plutonium that still has to be made in a reactor. Still, I'd love an RTG for powering or heating my home. Even if I needed batteries to even out the demand on the couple thousand watts one can make.