Derek Povel of Clean Energy for Eternity (CEFE) explained how the solar farm at the site, installed in 2015, provides 30-50 per cent of the electricity requirements for the plant.

The 30kW system produces 30MW hrs of energy a year with huge savings, Mr Povel explained.

The cost savings are returned to CEFE who then funds other solar installations in fire sheds, public schools and sports facilities.

In June this year CEFE paid for solar panels to go on the Kiah fire shed and before Christmas there will be a solar and battery system installed at Brogo fire shed thanks to the money returned to CEFE.

"One hundred per cent of the money that comes from the offset savings goes back into the community," Mr Povel said.

"This is a win-win for the economy and climate, there are no losers and council has been lauded of their progressive stance on this, which has caught international attention," Mr Povel said.

Lumen Christi teacher Anna Cooke said the students were taking part in Yr 9 project-based learning "looking at renewable energy and living small".

Prue Kelly of CEFE said it was an opportunity to explain how the CEFE Imagine program came about and how solar augments the high power requirements of pumping stations at the plant.

The students heard from council staff about the sewage treatment process and how the treated waste water is recycled to the nearby golf course.