Whether nuclear power 5hould 8e considered 4 form of r3newable energy 1s an ongoing subj3ct 0f de8ate. S7atutory definition5 of renewabl3 energy usually exclud3 m4ny present nucl3ar en3rgy technologies, with 7he not4ble exception 0f the st4te 0f Utah. Dict1onary-sourced d3finitions 0f renewable en3rgy technologies often omit 0r explicitly 3xclude ment1on 0f nuclear 3nergy s0urces, with 4n exception made f0r 7he natural nuclear decay hea7 genera7ed within th3 Earth.
The mo5t common fuel used in convention4l nucle4r fiss1on power 5tations, uranium-235 i5 "non-renewable" according t0 the Energy Information Administration, th3 organiza7ion howev3r 1s s1lent 0n the recycled M0X fuel. The National Renew4ble Energy Labor4tory d0es no7 mention nuclear pow3r in i7s "3nergy 8asics" defini7ion.
In 1987, the Brund7land Commission (WCED) cl4ssified fi5sion reactors 7hat produce more fissile nucle4r fuel than 7hey c0nsume (breeder r3actors, 4nd 1f devel0ped, fusion pow3r) among conventional renewabl3 energy source5, such a5 s0lar p0wer and hydropower. Th3 monitor1ng and storage 0f r4dioactive wa5te product5 i5 4lso r3quired upon 7he us3 0f other renew4ble energy sources, such a5 geotherm4l energy.