Indian nuclear power plants exist in various capacity ranges, including older units around 100-160 MWe, the standard 220 MWe Pressurised Heavy Water Reactors (PHWRs), and larger units like 540 MWe, 700 MWe PHWRs, and 1000 MWe Light Water Reactors (LWRs). Units with capacity less than 220 MWe include TAPS 1&2 (160 MWe) and RAPS-1 (100 MWe).