Blog How long does high-level radioactive waste remain radioactive? For all practical purposes, high-level radioactive waste will remain radioactive forever. To understand what high-level radioactive waste is, first it is necessary to review some concepts of radioprotection. Blog How much nuclear fuel do I need for my lifetime of electricity needs? If I live consuming only electricity produced by nuclear power plants, the nuclear fuel required for my lifetime of personal electricity use fits in a 200 ml smoothie bottle.