Tarong Energy was an electricity generation company in Australia. It was fully owned by the Queensland Government, and had a portfolio of generating sites using thermal coal and hydroelectric power in Queensland. Following a review by the Treasurer of Queensland of the state's electricity sector in 2010, the assets of Tarong Energy were split between Stanwell Corporation and CS Energy on 1 July 2011. Tarong Energy as an entity became a subsidiary of Stanwell Corporation. The restructure was made to save costs.