The project, run by TransGrid, promises to create 1500 jobs across the state, with Wagga to see a large proportion of the roles created.

Executive manager for the project, Sean McGoldrick, was in Wagga on Tuesday to shed further light on the $1.9 billion operation and officially call for supplier expressions of interest via its SecureEnergy venture.

"We are very keen to get local businesses involved," said Mr McGoldrick.

"We're looking at creating 700 jobs in construction and about 800 in the supply chain."

Dubbed 'EnergyConnect', the project is expected to begin next year and be completed by 2023. When fully operational the new inter-connector will span roughly 900km.

The proposed route will go via Dinawan, Balranald and Buronga to Robertstown in South Australia.

A series of 50 to 70 metre tall guy-wire towers and 40 to 60 metre tall free-standing towers will be built along the border, according to the environmental impact statement.

Mr McGoldrick told The Daily Advertiser initial planning identified Wagga as an existing "strong point" to set up the connection between the three energy points.

"It will mean the states can exchange energy at the best value," he said.

"We're looking at saving $180 million in electricity per year, which translates to about $60 per annum for households."

Mr McGoldrick said that the infrastructure is expected to continue providing savings throughout its 60-plus year lifespan, and will safeguard the state's grid against catastrophic energy collapse.

"The 2016 storm [in South Australia], if we had this alternate [energy] route that was geographically diverse then we could have avoided the major loss of power in South Australia," Mr McGoldrick said.

Michael Pygram of Milbrae Quarries in Leeton has begun putting together a quote for materials in the project.

His company has had years of experience supplying materials for large-scale highway projects and is currently making a bid to sign onto the Inland Rail initiative when it begins construction of its Albury to Stockinbingal line.

He considers the project to be a "long-term investment in the region", something that will "help set up Wagga for the future".

"Securing reliable energy is a fundamental thing for growth, so if we can secure the right kind of energy, it's something we can have for years," he said.

Wagga-based strategist futurist Malcolm Gregory is hopeful the inter-connector will pave the way for other similar projects.

"This can only be a positive thing for Wagga and regional Australia really," Mr Gregory said.

"There's a lot of solar projects starting up in the north [of Australia] so if we have this connection in Wagga, then that power only has to get to Wagga to then be sent on to South Australia and Victoria."

The timeline of the Wagga inter-connector, Mr Gregory said, may even increase the viability and therefore the likelihood of future power-sharing enterprises.

"There would be projects that may not go ahead in the future if this one wasn't put in place now," he said.