Key stake holders and politicians commended the community in their support for the construction and running of the largest solar farm in the southern hemisphere.

Australian Renewable Energy Agency acting chief executive officer Ian Kay said it was a bold move from the local government and local community that had paid off.

"I hope the community is very proud," he said.

Mr Kay was joined by AGL Managing Director and CEO Andy Vesey, federal Minister for the Environment Greg Hunt, NSW Minister for Industry Resources and Energy Anthony Roberts, federal Member for Parkes, Mark Coulton, Member for Barwon Kevin Humphries and Bogan Shire mayor Ray Donald.

Between the Nyngan and Broken Hill sites more than two million solar panels are feeding power in to the national electricity grid.

The project injected $14 million into the Nyngan and surrounding communities through direct and indirect costs and $15 million into the community at Broken Hill.

Mr Hunt was delighted by the milestone project.

"Nyngan is the future today, it is the largest operating solar plant in the southern hemisphere today and there will be competition moving forward but it's a good thing," he said.

"Those panels represent 50,000 homes being powered. It's the way of the future."

AGL CEO Mr Vasey also announced the opening of the AGL renewable energy education centre, which would provide a viewing platform to see the plantation.

"Recognising the potential of the solar plants to lead to increased tourism and economic benefits for the Nyngan and Broken Hill communities, we will build an information and education facility at each site as a legacy to support tourism," he announced.

"We are in the early stages of planning these facilities and look forward to working with the local councils and communities to progress these plans."

Mayor of the Bogan Shire, Ray Donald was delighted by the announcement.

"Pleased to see the tourism side of things get under way, I know I've been haggling with AGL about this and while it was being built it wasn't a priority," he said.

"But you can't have the largest solar farm in the Southern Hemisphere in this Shire and not have access for people."

Mr Vesey said Wednesday marked the beginning of a 30-year partnership between AGL and the Nyngan region.

There are now up to four local full-time employees operating and maintaining the Nyngan plant which will see an anticipated $137 million flow into the regional economy through employment and direct maintenance service requirements.