Energy company AGL is set to unveil plans to build a 210-megawatt gas-fired power station in Adelaide to replace its existing 50-year-old plant.
The new plant will be operational by 2019 and will replace the four units at the existing 480mw Torrens Island A power station, which has operated since 1967, the Adelaide Advertiser has reported.
AGL did not respond to requests for comment, but in March the company's wholesale markets general manager Richard Wrightson said the Torrens Island power station was nearing the end of its life.
It had not run at full capacity for more than a year and it was extremely unlikely it would ever again, he said.
"It is a very old station and its reliability is poor because it's very much getting to the end of life," he told a Senate inquiry.
Earlier this year there was an explosion and fire at Torrens Island when a transformer operated by transmission company Electranet failed.
News of AGL's plans for a new power plant comes as South Australian pushes on with its $550 million energy security plan, which includes building a government-owned power station and construction of the nation's biggest battery to store renewable energy.
Energy Minister Tom Koutsantonis on Tuesday said a shortlist of companies wanting to build the battery would submit their proposals this month. He said the government would make its final decision on the successful proposal "as soon as possible", with the battery to be built by December.