While no universal definition of “renewable energy” exists, IRENA has made clear what it won’t address—nuclear is out, but so is energy efficiency.
Habang walang unibersal na kahulugan ng "nababagong enerhiya" ay umiiral, IRENA ay gumawa ng malinaw kung ano ang hindi nito matugunan-nuclear ay wala na, ngunit gayon ay enerhiya na kahusayan.