Federal Environment Minister Greg Hunt has denied the Turnbull Government has reversed a ban on public investment in wind farms.

Mr Hunt recently gave the Clean Energy Finance Corporation (CEFC) a new mandate allowing it to invest in wind projects.

Under the new mandate, signed by Mr Hunt and Finance Minister Mathias Cormann on December 3, the $10 billion fund will be allowed to invest in wind projects, as long as they incorporate "emerging and innovative" methods.

It comes approximately five months after the Abbott government gave the corporation a directive to stop investing in wind farms.

Mr Hunt told ABC that there had been "perfect consistency" in policy, stating that the July document was a draft mandate.

He said that he never called for a prohibition on wind investment, but instead more focus on emerging technologies.

"The very agreement that we struck, and on which I was deeply engaged with the Senate, now forms the basis of the arrangements and the mandate to the CEFC, so for me, there's a perfect consistency," he said.

Labor MP Graham Perrett has responded to Mr Hunt's comments online, quoting George Orwell.

"He who controls the past controls the future. He who controls the present controls the past," he tweeted.

Mr Hunt said there were differences between former prime minister Tony Abbott and his successor Malcolm Turnbull in approaching environmental issues, but said there was "deep policy consistency".

The CEFC has announced $67 million in financing for Australia's third-largest wind farm at Ararat in western Victoria, a move welcomed by Victorian Environment Minister Lisa Neville.

"It's been a very rocky 18 months for the industry and investment which has caused a lot of losses of jobs across Australia so this is a positive step forward," Ms Neville said.