It was founded in 1957 as the Prospect County Council, as a spin-off from the Sydney County Council, which was responsible for supplying electricity to much of the eastern half of Sydney.[1] As with the Sydney County Council, it was controlled by local councils in the area, until 1989 when the state government began to take control of electricity suppliers.[2] Local government control was fully ended in 1991, when Prospect Electricity, a government business enterprise, was formed. On 1 March 1996, Prospect Electricity was merged with Illawarra Electricity to form Integral Energy, in preparation for the National Electricity Market & electricity deregulation.[3]