Tasmania is running entirely on green energy after one additional wind turbine on the state's remote west coast was connected to the grid.
The island state on Friday officially reached its goal of 100 per cent renewable power two years ahead of schedule.
"Every Tasmanian should be proud that our state is the first in Australia, and one of only a handful of jurisdictions in the world, to achieve this target," Energy Minister Guy Barnett said.
The 29th wind turbine of 31 has been commissioned at Granville Harbour wind farm on a working cattle property.
When fully online, the farm will be able to power 46,000 homes, virtually all the houses in northwest Tasmania.
Tasmania's renewables will then generate 10,741 gigawatt hours of energy per year, above the island's average demand of 10,500.
"For Granville Harbour ... to be the actual catalyst for Tasmania achieving its 100 per cent renewable energy target is a remarkable outcome," project director Lyndon Frearson said.
The vast majority of the state's electricity is hydro-generated.
Tasmania recently passed legislation which aims to double the island's current green energy generation by 2040.
The plan is contingent on a second Bass Strait power cable which will be able to transfer electricity to mainland Australia.
The Marinus Link project has been included on a federal government priority infrastructure list, but it is not yet known who will foot the bill or when construction may start.
Australian Associated Press