Energy Dome and Google Partner to Scale CO₂ Battery Tech

The Milan-based Energy Dome, a global expert in long-duration energy storage, has announced a new worldwide commercial partnership with Google to scale the deployment of its CO₂ Battery technology. The collaboration is designed to support the delivery of 24/7 carbon-free electricity for the data centers and infrastructure powering Google’s global operations. In addition to the commercial agreement, Google has also made a strategic investment in Energy Dome.

The partnership will reportedly advance long-duration energy storage (LDES) as a critical tool for decarbonizing power grids, especially as global electricity demand grows with increased electrification and the expansion of artificial intelligence. While solar and wind remain among the most cost-effective forms of renewable generation, their inherent intermittency creates a need for scalable, dispatchable energy storage technologies. Long-duration energy storage addresses this challenge by capturing excess renewable energy and making it available when needed, ensuring firm, reliable, and clean power.

Google’s collaboration with Energy Dome marks its first commercial agreement for long-duration energy storage. It represents a significant step toward the company’s goal of running its operations on 24/7 carbon-free energy by 2030. The CO₂ Battery was selected for its technological maturity, scalability, and ability to be deployed affordably and rapidly in key markets worldwide.

The CO₂ Battery is capable of discharging energy continuously for 8 to 24 hours, offering a level of firm power that can meet both baseload and peaking requirements. Its modular, site-independent design leverages off-the-shelf mechanical components and avoids reliance on critical materials such as lithium or rare earth elements. This not only makes the system scalable and cost-effective, but also insulates it from many of the supply chain risks associated with battery manufacturing.

Unlike lithium-ion systems, the CO₂ Battery uses a patented thermo-mechanical process that compresses and expands carbon dioxide in a closed-loop cycle. In addition to energy storage, the system also contributes to grid stability by supplying rotational inertia—a vital characteristic lost with the retirement of conventional fossil-fueled power plants. This function enables the battery to help absorb shocks and smooth out frequency fluctuations in the grid.

“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.”

The global agreement includes a pipeline of development-stage CO₂ Battery projects in North America, Europe, and Asia-Pacific. The two companies plan to jointly deploy and commercialize these projects to support grid decarbonization, while enabling a more resilient and flexible electricity supply for Google’s operations and beyond.

“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. We’re proving that a 24/7 cost-effective and carbon-free energy supply is achievable with the right technology and partnership model,” said Claudio Spadacini, Founder and CEO of Energy Dome. “We are also pleased to welcome Google as an investor in Energy Dome, underlining our joint commitment to a shared vision.”

Google’s investment comes as Energy Dome enters a commercial growth phase, following successful deployments and agreements with major energy providers including Alliant Energy in the U.S., Engie in Italy, and NTPC in India. The partnership reflects a growing industry consensus that LDES technologies are essential to achieving global energy transition goals.

About Energy Dome

Energy Dome is an energy storage technology company based in Milan, Italy, specializing in long-duration solutions for grid-scale applications. The company’s patented CO₂ Battery system uses a closed-loop thermo-mechanical process that stores and dispatches electricity using carbon dioxide as a working fluid. The design eliminates the need for lithium or rare-earth materials, instead relying on off-the-shelf mechanical components from existing supply chains. The modular, site-independent architecture of the CO₂ Battery enables scalable and efficient storage of intermittent renewable energy, supporting grid reliability and decarbonization goals worldwide. For more information, please click here.

Source/Photo Credit: Energy Dome 

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