Wangi Power Station was decommissioned in 1986, approximately thirty years after the first turbo-alternator commenced operation.

Rapidly rotating blades of the spreader feeder unit flung coal of the required size onto the rotograte, with a large percentage igniting before landing on the grate.

There were two rotogrates fitted which consisted of two endless chains carrying transverse grate bars in a revolving action.

[3][2] Wangi Power Station Complex was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria.

[3][2] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

Wangi Power Station has highest level State significance being: aesthetically distinctive, showing creating and technical innovation, associated with the creative accomplishments of an eminent Architect and for continuing to act as a prime exemplar of a particular style of Architectural expression.

[3][2] The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.

[3][2] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.

Further it is significant for its construction method, which incorporated an early use of the "fast tracking idea", whereby one end of the building was in full production before the other was fully erected.

[3][2] This Wikipedia article contains material from Wangi Power Station Complex, entry number 01014 in the New South Wales State Heritage Register published by the State of New South Wales (Department of Planning and Environment) 2018 under CC-BY 4.0 licence, accessed on 2 June 2018.