Google Partners with Energy Dome to Store Renewable Energy in Domes Filled with CO₂

Google Energy Dome Photo Google Gemini MOUNTAIN VIEW, CA — In a bold move toward its 24/7 carbon-free energy goal, Google has announced a new partnership with Italian startup Energy Dome to deploy a novel long-duration energy storage (LDES) technology that uses giant domes filled with carbon dioxide (CO₂). This collaboration represents Google's first commercial deal in the LDES space and is a significant step in making intermittent renewable energy sources , like solar and wind , more reliable around the clock. The technology, dubbed the " CO₂ Battery ," operates on a simple, yet powerful, thermo-mechanical principle . When there's an excess of cheap renewable energy on the grid, the system uses that power to compress CO₂ gas, which is stored in a large, flexible dome, and turn it into a liquid. The heat generated during this process is also captured and stored. When the grid needs more power—for example, when the sun isn't shining or the wind isn't blowi...