Gippsland Water has achieved its target of being powered by 100 per cent renewable electricity by 2025.
The organisation met the goal with a mix of solar, hydroelectric and biogas energy generation, as well as purchased green power.
Managing director Sarah Cumming said the transition to renewable energy was a critical step for the organisation on its way to achieving net zero emissions by 2030.  
"During the 2024-25 financial year, emissions resulting from our electricity consumption made up two-thirds of our total emissions," Ms Cumming said.
"Now that we are sourcing all of our electricity from renewable sources, our carbon emissions will drop by over 20,000 tonnes, based on historical electricity consumption, which will put us on track to achieve net zero emissions by 2030," she said.