Energy Dome | Ottana Project

Company Description

Energy Dome is revolutionizing energy storage and enabling grid decarbonization by making solar and wind power dispatchable. The company invented and developed the CO₂ Battery, a long-duration energy storage system that makes long-duration energy storage viable globally today. The properties of carbon dioxide allow the system to store energy efficiently and cost-effectively, with a modular and site-independent footprint. CO₂ Batteries use readily available, off-the-shelf components from reliable, existing supply chains, providing a scalable pathway to store massive amounts of intermittent renewable energy and accelerate the energy transition.

Energy Dome’s Ottana Project, located in Sardinia, Italy, will transform the site of a retired oil-fired power plant into a long duration energy storage system. The Project stores CO₂ as a gas in a large dome and uses electricity to compress the CO₂ to a liquid, storing energy for up to 10 hours before being released as the CO₂ is expanded back into a gas. Once operational, the Ottana Project will demonstrate the commercial viability of the technology and support increasing penetration of renewable energy while maintaining grid stability.