Mount Isa is set to receive a major renewable-energy investment after APA Group announced today that it will proceed with the Sybella Creek Solar Farm and Battery Energy Storage System.

APA Group has committed $259 million to construct, own and operate the project, which will combine a 72-megawatt solar farm with a 52MW/104MWh battery energy storage system in Mount Isa, Queensland.

The project is being developed to supply renewable electricity to Ernest Henry Mining, an Evolution Mining operation near Mount Isa. APA and Ernest Henry Mining have entered into an energy supply agreement that runs until mid-2046, providing a long-term foundation for the project.

Construction is expected to begin during 2026, with the project targeted for completion by mid-2028. Once operational, the solar and battery facilities are expected to contribute to the region's energy security and provide renewable electricity for mining operations.

The battery component will allow electricity generated by the solar farm to be stored and used when required. APA says the project will also work alongside its existing Diamantina Power Facility, which will continue providing firming capacity and energy supply.

The investment is significant for Mount Isa because the region has a long history of mining and energy-intensive industrial activity. Increasing access to renewable energy could help support the area's mining operations while diversifying its energy infrastructure.

APA said the project would improve energy security in Mount Isa while also supporting the company's broader growth strategy.