Emergency services were called to the Tungatinah station at Tarraleah around 9:00pm on Wednesday, with the blaze contained by the early hours of Thursday morning. Hydro Tasmania confirmed no employees or contractors were on site and no injuries occurred.
The fire is one of 10 major stations in Tasmania's hydro-electric scheme. The Tungatinah station has a generating capacity of 142.2 megawatts and is the newer of two power stations at Tarraleah. The full extent of damage is yet to be assessed, but Hydro Tasmania says the system "continues to operate securely" and there is no risk to energy supply.
The Lyell Highway is closed between Victoria Valley Road and Fourteen Mile Road for approximately 24 hours, with police allowing residents access to Bradys Lake. Outages have been reported in surrounding towns including Tarraleah, Brady's Lake and Bronte Park, which TasNetworks attributes to a pole fire.
A joint investigation involving the fire service, Tasmania Police, Hydro Tasmania and TasNetworks is expected to provide an update this morning. The public has been asked to stay away from the site.