A power supply deal needed to underpin a $270 million West Coast wind farm development will be considered by state cabinet on Tuesday.
If cabinet approves the supply deal, which is likely, the way should be clear for the long-awaited Granville Harbour project to proceed.
A formal announcement would be imminent.
Energy Minister Matthew Groom will take the wind farm deal to cabinet and recommend its approval, it is understood.
Early in June, discussing wind farm developments, Mr Groom said: “I hope to have more to say shortly about an exciting proposal for Granville Harbour.”
Cabinet will meet at Queenstown on Tuesday, with Premier Will Hodgman expected to field media questions during the day.
The Granville Harbour project is expected to create about 200 construction jobs and support and/or create an estimated 40-50 wind tower manufacturing jobs at Haywards, in Launceston.
It would also increase Tasmanian energy supply and energy security, and increase the potential for lucrative electricity exports.
Proponent Westcoast Wind says it would abate carbon dioxide emissions equivalent to taking 30,000 cars off the road.
Westcoast Wind has been in negotiations with state-owned Hydro Tasmania and Aurora Energy about a supply deal.
If a go-ahead is announced, it will be the third major Tasmanian wind farm development announced within a matter of weeks, all of them helping build a case for a second Basslink-type cable between Tasmania and the mainland.
A large wind farm at Robbins Island is targeted to be investment ready by early 2019, with a related, smaller project at nearby Jims Plain expected to be investment-ready by mid-2018.
Those projects are expected to cost $1.2-1.6 billion, and involve land owners the Hammond Family and international renewable energy developer UPC Renewables.
On June 6, Aurora and Goldwind Australia announced they had reached in principle agreement to construct a $300 million wind farm at Cattle Hill, in the Central Highlands.
Construction is planned to start in September, and is expected to employ more than 150 people.
The project is expected to create up to 10 ongoing maintenance jobs.
The Robbins Island project is expected to bring about 250 construction jobs and about 50 ongoing jobs.
It has been on the drawing board for more than a decade.
The Central Highlands and West Coast wind projects have also been mooted for some years.