One of the nation's leading renewable energy companies says uncertainty around when Tasmania's second undersea power cable will be delivered is causing delays to its proposed wind and solar developments in the state.
Epuron has proposed to build solar farms in George Town and Wesley Vale and is developing wind farms for Western Plains and St Patricks Plains.
The company has also floated two other wind farms for Hellyer and Guildford, both of which are at the feasibility stage.
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Epuron executive director Martin Poole said when the $3.2 billion Marinus Link cable was delivered, it would have a huge impact on the Tasmanian electricity market, and, to a lesser extent, the national market.
"I think the second interconnector is what is causing most of the discussion at the moment that we're having with parties in Tasmania because the timing of it is uncertain and the size of it is uncertain," Mr Poole said.
"[Marinus Link would] be great for our projects.
"I suppose the downside for us is that before the decision is made or before announcements are made, there's just more uncertainty - and we have to manage that."
Recent analysis from TasNetworks found the Marinus Link project would be capable of transporting 1500 megawatts of energy to the mainland, which is 300 megawatts more than originally anticipated.
It's expected the second interconnector, to complement Basslink, will be up and running by 2027-28.
Goanna Energy Consulting is in the process of producing a report on the consumer impacts of the prospective second interconnector.
Principal consultant Marc White said Goanna was "calling for caution" around Marinus Link.
"We hold some concerns about the demand side of the market advancing so quickly," he said. "The question is how long will Marinus Link be able to make money for and will it become an under-utilised stranded asset into the longer term, given what's about to happen [in terms of] demand."
Energy Minister Guy Barnett said the Battery of the Nation and Marinus Link projects would generate billions of dollars of investment and create thousands of jobs in the state.
"Tasmania has what the rest of the nation needs: low cost, reliable and clean energy," he said.