Energy Dome, the Milan-based innovator behind CO₂ Battery technology, has entered into a global commercial partnership with Google to accelerate the deployment of long-duration energy storage (LDES) systems. Google has also made a strategic investment in the company, reinforcing its ambition to operate entirely on carbon-free energy round-the-clock by 2030.
The collaboration marks Google’s first commercial agreement in the long-duration storage sector. The CO₂ Battery, which can dispatch electricity continuously for 8 to 24 hours, addresses one of the major challenges in renewable energy: intermittency. As data centres and artificial intelligence workloads drive up electricity demand, Google is seeking firm, dispatchable clean energy solutions to meet its expanding operational needs.
Renewable sources such as wind and solar, while cost-efficient and scalable, lack consistency due to fluctuating weather patterns. Energy Dome’s technology allows surplus renewable energy to be stored and later discharged when demand peaks, ensuring grid stability and continuity of supply. The system’s modular and site-independent design—relying on standard mechanical components—enables rapid deployment without the risk of supply chain disruptions.
Notably, the CO₂ Battery also contributes to grid resilience. It delivers rotational inertia through mechanical systems, offsetting the loss of stability typically provided by decommissioned fossil-fuel plants. This makes the solution especially valuable as global grids transition towards cleaner energy systems.
“Google is committed to powering our operations with clean energy, and Energy Dome’s technologically proven and scalable long-duration energy storage solution can help us unlock rapid progress,” said Maud Texier, Director of EMEA Energy at Google. “But this isn’t just about Google. By helping to scale this first-of-a-kind LDES technology, we hope to help communities everywhere gain greater access to reliable, affordable electricity and support grid resilience as we integrate more renewable energy sources.”
Under the agreement, Energy Dome and Google plan to roll out CO₂ Battery projects across key regions, including Europe, North America, and Asia-Pacific. A pipeline of potential sites is already in development or negotiation.
“The programmatic and strategic deployment of our technology at scale to help Google reach carbon-free energy represents the core of our industry-first agreement,” said Claudio Spadacini, Founder and CEO of Energy Dome. “We’re proving that a 24/7 cost-effective and carbon-free energy supply is achievable with the right technology and partnership model.”
Google’s equity investment comes as Energy Dome scales up commercial operations. The company has secured contracts with major utilities including Alliant Energy (USA), Engie (Italy), and NTPC (India). Google’s backing, coupled with its legacy of early-stage support for renewable technologies, is expected to accelerate market adoption of LDES.
