Too much energy required!A cap on energy consumption per adult. If you drive your car too much you'll have to burn the kids to keep the house warm.
So they'll have to gut and dry their kids out in a smokery first. Easily solved.Too much energy required!
"Burning people to generate electricity doesn't. ... The human body is about 65 percent water and it requires a tremendous amount of heat to vaporize the water and get the corpse burning. It takes about 100 megajoules of thermal energy — the equivalent of 105 cubic feet of natural gas – before any combustion takes place."