Locals fear that a new electricity transmission line will ruin the tranquillity of their Tasmanian wilderness.

Energy company UPC Renewables and Tasmania's energy provider TasNetworks have plans for a 170-kilometre-long high-voltage line from West Montagu, in the state's far north-west, to Staverton, near the tourist town of Sheffield.

The plan is to use the line to export power generated at a proposed 500-megawatt wind farm on Robbins Island and at West Montagu.

UPC would own and operate most of the line, with TasNetworks to control a 55 kilometre stretch slated to run through the Loongana Valley.

But residents are concerned that the construction work will scare off animals, and that tourism businesses might be devalued by the visual impact of the line, which will hundreds of hectares of forest to be cleared to create a 90-metre easement.

SOLVE - Supporting Our Loongana Valley Environment - has been formed to represent broad community opposition.

The group says the community consultation for the project was an exercise in political spin.

The project is still a few years off, with planned turbines at Jims Plain recently receiving a green light from the Federal Government, allowing it to go into a secondary approval process.

Plans for 127 turbines a Robbins Island, and the transmission line, have not yet been presented to any planning authorities.

TasNetworks wants its part of the transmission line to support plans for a second undersea power cable between Tasmania and Victoria, a scheme dubbed ‘Marinus Link’.

While these is still no official funding for the $3.5 billion cable, TasNetworks is moving ahead to finalise the placement of the line.

Project Marinus general manager Bess Clark says Tasmanians should be excited about the transmission line project.

“What it's doing is helping Tasmania unlock its fantastic renewable energy resources, helping Australia's clean energy transition, and in doing so it's unlocking thousands of jobs in Tasmania, particularly north-west Tasmania,” she said.