Local power station works
HYDRO Tasmania is halfway through a $275 million upgrade of its Derwent River system, with work to three power stations in and around the Central Highlands completed.
The total upgrade to six power stations in the system is expected to increase electricity generation by more than 80 gigawatt hours each year by 2021.
Work at the Tungatinah, Meadowbank and most recently a $28.5 million upgrade at Cluny power stations is complete.
The work at Cluny, near Lake Meadowbank, included an upgrade to one of the turbines to allow for 3 per cent more efficiency, the elimination of oil spill risk through a new water-filled turbine hub, and the addition of a new control system.
The first of three machines upgrades at Wayatinah and Liapootah power stations have also been completed, with the total value of work so far at $151 million.
State Lyons MP Guy Barnett said following the completion of work at the Cluny Power Station, Hydro would then begin upgrades to the Repulse Power Station. Work at Repulse includes a turbine upgrade and refurbishment valued at $32.1 million.
Meanwhile, Hydro is also undertaking separate works to the Tarraleah and Gordon power stations.
There are plans to replace Tarraleah, one the state’s oldest stations, with a modern design to potentially boost production by up to 200 gigawatt hours per year and extend the station’s operating life by 80 years.
Hydro is also investigating the possibility of installing an extra smaller turbine at Gordon to boost efficiency while releasing environmental flows into the Gordon River.
Hydro chief executive Steve Davy said Tasmania provided about 5 per cent of Australia’s energy.
“Projects like the Cluny upgrade are about getting the most generation we can out of our existing hydropower asset by boosting efficiency and reliability,” he said.
Meanwhile, Mr Barnett said Hydro was identifying a shor tl ist of sites for pumped hydro that had the potential to generate up to an extra 2500 megawatts of power, enough to power 500,000 homes right around the nation.
Pumped hydro refers to reusing water by pumping it back to a station after initial use.
“Last week, the Australian National University announced that it had identified over 2000 potential pumped hydro sites in Tasmania,” he said.