Starting up in October 2024, the Moomba Carbon Capture and Storage project (Moomba CCS) in South Australia’s Cooper Basin has safely and successfully stored 1.3 million tonnes CO2 equivalent (CO2e) in the first year of injection.   

This paper looks back over the first year of injection performance into the depleted Permian-age Toolachee Formation via five purpose-drilled injector wells.  The paper also reviews the results of the monitoring and verification activities undertaken to demonstrate safe storage of CO2 within the complex, including injection telemetry, pressure and CO2 saturation. In addition, insights from the passive seismic monitoring array will be discussed.  Learnings from this project have implications for other CCS projects targeting depleted hydrocarbon reservoirs.