It was also the first major power station in New South Wales to be built inland, using fresh water for cooling instead of the more abundant saltwater used in coastal power stations. To accommodate this change, Lake Liddell was expanded to provide more water, requiring an 11-kilometer section of the Main Northern railway line to be rebuilt on a new alignment. The completion of Liddell aided in the retirement of power stations in Sydney, such as Balmain and Bunnerong.
Lake Liddell was expanded to serve as an inland power station for New South Wales, using fresh water for cooling instead of saltwater from coastal sources. This required rebuilding a 11-kilometer section of the Main Northern railway line on a new alignment. The completion of this project helped in retiring power stations like Balmain and Bunnerong.