Energy Dome hails commercial launch of ‘CO2 Battery’

Energy Dome hails commercial launch of ‘CO2 Battery’

Energy Dome hails commercial launch of ‘CO2 Battery’ 1024 683 Energy Storage Journal

June 9, 2022: Italian energy tech company Energy Dome announced the commercial launch of its first ‘CO2 Battery’ in Sardinia on June 8.

“We are now preparing our first full-scale 20MW-200MWh plant,” says the firm. Its first commercial project, Commercial Operation Date, is expected to be deployed by the end of 2023

Energy Dome says it has already secured multiple commercial agreements, “including with an Italian utility A2A for the construction of a first 20MW-5h facility”.

On April 4, Energy Dome announced the signing of a deal to expand the use of its technology across Europe in partnership with Italy’s Ansaldo Energia to build long-duration energy storage projects in Italy, Germany, the Middle East and Africa.

“Our plan is backed by investors including European venture capital firm 360 Capital, Barclays, Novum Capital Partners and Third Derivative,” says Energy Dome.

“To fund the rapid commercial scale-up, we plan to launch a Series B fundraising round for prospective investors interested in this ground-breaking energy storage technology.


The company said the milestone marked the “final de-risking” of its long-duration energy storage technology as it enters the commercial scale-up phase.

The firm claims CO2 Batteries “can be deployed just about anywhere at less than half the cost of similar-sized lithium-ion battery storage facilities and have superior round-trip efficiency, with no performance degradation over a 25-year lifecycle.”

Company co-founder and CEO Claudio Spadacini said: “Our breakthrough technology is now commercially available to make cost-effective renewable energy dispatchable on a global scale.”

Energy Dome uses CO2 in a closed-loop charge/discharge cycle as a storage agent. Before charging, gaseous CO2 is kept in a large dome structure.

During charging, electricity from the grid is used to compress the CO2 into liquid form, creating stored heat in the process. During discharge, the liquid CO2 is evaporated using the stored heat, expanded back into its gaseous form, and used to drive a turbine to generate electricity.