Last week NSW Energy Minister Matt Kean launched the state's second Renewable Energy Zone in New England, which was expected to support 2000 construction jobs and 1300 ongoing jobs via $12.7 billion in new investment.

Last month saw the first zone launched for Central-West Orana, which included Dubbo.

Eunony Valley crop farmer John Gray can stand on a hilltop he owns and see a completed solar farm at Bomen in one direction and preliminary construction for different solar project in another.

Mr Gray said the NSW government should take care and consider current land uses when promoting new projects via Renewable Energy Zones.

"It's invading prime agricultural land and established neighbourhoods," he said.

"And what happens when they are finished in 25 years? They say they will clean it up, but the company might not even still be around."

Spark Infrastructure owns the Bomen Solar Farm and its head of renewables, Anthony Marriner, welcomed the prospect of a new zone.

"There's an enormous amount of investment interest and that will probably give the government enough confident to move forward with a south-west zone sooner rather than later," he said.

"Those zones are interesting as long as they are done properly and don't take too long.

"At the end of the day, for us it is all about location. If we find a good location that it is not in a zone then we will go with that. If there is a zone that will unlock transmission upgrades then that is very interesting for us."

A NSW Department of Planning, Industry and Environment spokesperson said the "South-West Renewable Energy Zone remains a priority for the NSW government".

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"The grid in this region is currently constrained, limiting new energy projects from connecting. Implementation of the zone will be informed by lessons learnt in developing the Central-West Orana and New England zones," the department spokesperson said.

"The indicative location detailed in the 2018 NSW Transmission Infrastructure Strategy begins some 150 kilometres northwest of Wagga at Darlington Point and extends westwards.

"The final location of the zone will be informed through a market engagement process which would be expected to capture existing, proposed and new energy projects."