The Wangi Power Station has highest level State heritage Significance for its association with leading the evolution of coalfields - sited power stations and power generation in New South wales. It has similar level significance for being the largest power station in NSW for at least first five years of operation. Its pre-eminent part in relieving NSW from the drastic power shortages and blackouts during the late 1950s and playing a major roles in restoring power supply to NSW after the total state power shutdown of 10 June 1964. Wangi Power Station was the last of the Railway's power stations to be built, and the last one to close, and represents the transition from Railways to Elcom as the predominant power generation authority in NSW.