Energy Minister Guy Barnett told a government business enterprise hearing into TasNetworks that Tasmania must do all it could to be not just competitive in Australia but also globally on energy prices.

"Our target by 2022 is to have the lowest electricity prices in Australia for residential and business customers," Mr Barnett said.

"We have a plan to be 100 per cent fully self sufficient by 2022."

He said he had spoken to Chief Scientist Professor Alan Funkel two months ago who said Tasmania would be in the top three in the world on clean energy.

"We are way ahead of the rest of the country and way ahead of most other countries in the world.

""it's natural, it's clean and we can be proud of it."

Mr Barnett said that being globally competitive also gave Tasmania the chance to lead on renewable energy projects including pumped hydro and hydrogen.

"Tasmania has a real opportunity to lead the country when it comes to renewable hydrogen," he said.

Mr Barnett told the hearing that TasNetworks made an after-tax profit of $40.8 million which was $6.4 million above budget.

He said $43.1 million was paid in dividends which was a "terrific result".