Energy Dome’s branded CO2 Battery technology stores energy by using electricity to compress carbon dioxide gas into a liquid state during charging, then releasing the stored energy by expanding the CO2 through turbines when power is needed, in a closed-loop thermodynamic process.

Unlike lithium-ion battery systems that dominate Australia’s current storage fleet, the approach relies on conventional industrial components, such as compressors and turbines, familiar to the Latrobe Valley’s existing engineering workforce.

SEC CEO, Chris Miller, said long-duration energy storage will need to play a system-level role as Victoria advances toward its 65% renewable energy target by 2030.

“As an integrated generator and retailer of 100% renewable electricity to commercial and industrial customers, we envisage long-duration energy storage will play a critical role in balancing our portfolio, enabling SEC to provide additional support to the system during multi-hour or multi-day wind or solar droughts,” Miller said.

Energy Dome founder and CEO Claudio Spadacini said the Latrobe Valley’s workforce made it a natural fit for the technology.