Ms Giddings forwarded the Aurora Energy proposal to federal Communication Minister Malcolm Turnbull yesterday, saying it was a practical solution to Mr Turnbull's concerns with the progress of the underground roll-out.

She said the proposal would allow Tasmania to meet its 2015 deadline to complete the rollout, which is otherwise highly unlikely, and maintain the economic benefit of being the first state to be fully connected to the NBN.

"We do believe that Visionstream could continue to rollout the NBN; it's just the way they roll it out would change, or could change," Ms Giddings said.

"We don't believe there's anything that could inhibit this."

The report estimates an above-ground delivery of fibre- to-the-premises would cost $60 a metre, compared with up to $400 a metre for an underground rollout. Mr Turbull is expected to consider the proposal as part of a review of the NBN, due next month.

Ms Giddings acknowledged concerns raised by the Civil Contractors Association that a change in method would see existing subcontractors dropped because they did not have the skills necessary for an aerial rollout, but said Tasmania needed to consider the "big picture".

"Allowing a project to continue with optic fibre to the home is simply not good enough," she said.

TasICT chief executive Dean Winter said Aurora's proposal was the only option that could make the 2015 deadline.

"There's nothing to say that this isn't just as good as the fibre-to-the-premises that we originally promised," he said.

Hobart-based tech company The Secret Lab, which designed the award-winning Playschool app, was connected to the NBN last month.

Co-founder Jon Manning said staff had already redesigned their work practices to take advantage of the faster download speeds.

"The speed is the critical thing. Fibre-to-the-node doesn't get you the speed that we need," Mr Manning said.

"The actual method by which the fibre hits your front door doesn't matter, as long as it is fibre getting to your front door."