The publicly owned energy company recorded the largest day of electricity generation in its history on 9 January 2026, when the portfolio delivered 16.3 GWh of electricity to the Queensland grid. January also marked the highest monthly electricity generation for CleanCo, with the portfolio producing more than 387 GWh.
The summer period saw CleanCo’s highest ever seasonal generation, with the portfolio producing more than 1,090 GWh across summer 2025–26 – enough electricity to power around 200,000 Queensland homes for a year. This strong performance builds on sustained operational results, with 2025 also CleanCo’s highest ever calendar year for electricity generation.
CleanCo Chief Executive Officer Tom Metcalfe said the results highlight the importance of well-maintained assets and a diverse portfolio.
“Demand on our energy system is highest during the summer months, so it’s critical that our assets are delivering reliable electricity for Queenslanders during this time,” Metcalfe said.
“That’s why the Queensland Energy Roadmap places such a strong focus on maintaining the reliability of our foundation assets as more renewable generation comes online.”
Executive General Manager of Asset Operations Rimu Nelson said the record highlights the strong operational performance of CleanCo’s generation assets.
“Delivering record generation over the summer reflects the work our teams put in year-round to maintain and optimise these assets so they are ready to perform when demand increases,” Nelson said.
“Our renewable generation works alongside flexible firming assets like Wivenhoe Pumped Hydro and Swanbank E to respond quickly and support reliability across the energy system during periods of high demand.”
CleanCo’s portfolio combines renewable generation from hydro assets and privately owned wind and solar with flexible firming assets, including gas generation and pumped hydro, to help maintain reliability across Queensland’s energy system during periods of peak demand.
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