Energy Dome and ENGIE launch a 20MW/200MWh CO2 Battery project in Sardinia, Italy, for long-duration energy storage.

Energy Dome and ENGIE have signed an offtake agreement for a new CO2 Battery project in Sardinia, Italy, set to start in early 2025. The 20MW/200MWh facility will store energy for up to 10 hours, with ENGIE optimizing its use in Italian power markets. Funded by EU-Catalyst, the project highlights the growing importance of long-duration energy storage in supporting renewable energy and grid reliability.