Website: [energydome.com](https://energydome.com) ### Introduction Energy Dome is an innovative energy storage company founded in 2019 by Claudio Spadacini, who serves as the CEO. Headquartered in Milan, Italy, the company focuses on developing long-duration energy storage (LDES) solutions to support the integration of renewable energy into the grid. While exact employee numbers are not publicly disclosed in the latest data, Energy Dome operates as a growing deep-tech scale-up with a global presence. Their mission is to provide sustainable, scalable, and cost-effective energy storage using their proprietary CO2 Battery technology, which leverages carbon dioxide in a closed-loop thermodynamic cycle to store and dispatch energy. Energy Dome remains a private company with no public stock listing or ticker symbol. The company has gained significant attention in the energy storage sector for its novel approach, which avoids rare earth materials and aims to address the intermittency challenges of renewable energy sources like solar and wind. Their technology is positioned as a game-changer for grid stability and decarbonization efforts worldwide [Energy Dome](https://energydome.com). ### Key Products and Technology - **CO2 Battery (Long-Duration Energy Storage System)** - **Type**: Thermodynamic energy storage using carbon dioxide in a closed-loop cycle. - **Technical Specifications**: Capable of storing energy for 10-24 hours or more, with scalable capacity depending on project size. Specific power output or efficiency metrics are not fully detailed in public sources, but the system is designed for grid-scale applications with multi-megawatt-hour storage potential. - **Fuel Type or Energy Source**: Utilizes electricity from renewable sources (solar, wind) to compress CO2 into a liquid state for storage; releases energy by expanding the CO2 to drive a turbine. - **Key Differentiators**: No reliance on rare earth materials, low-cost and sustainable design using off-the-shelf components, closed-loop system with minimal environmental impact, and ability to store large amounts of energy in inflatable domes (holding up to 2,000 tonnes of CO2 per dome). - **Development Stage**: Operational pilot projects, with a demonstration plant in Sardinia, Italy, already functional. Commercial-scale projects are in planning or early deployment phases globally. - **Target Customers**: Utilities, grid operators, renewable energy developers, and large energy consumers like data centers (e.g., Google) seeking reliable LDES solutions [IEEE Spectrum](https://spectrum.ieee.org/co2-battery-energy-storage). ### Regulatory and Licensing Status Energy Dome’s CO2 Battery technology does not fall under nuclear regulatory oversight like the Nuclear Regulatory Commission (NRC), as it is a non-nuclear energy storage solution. Instead, regulatory considerations primarily involve environmental and safety standards related to handling and storing compressed CO2, as well as grid interconnection approvals in various jurisdictions. The company has not publicly detailed specific regulatory hurdles or milestones in recent data, but their technology’s use of sustainable materials and closed-loop design likely aligns with environmental regulations in the EU and other regions. Energy Dome received funding from the European Commission’s EIC Accelerator program in 2022, indicating compliance with EU innovation and sustainability criteria. Upcoming regulatory milestones may include certifications for commercial deployment in multiple regions, particularly as they expand globally. The estimated timeline for broader commercial deployment appears to be within the next 1-3 years, with projects already in discussion for 2026-2027 based on recent partnerships and announcements [Renewables Now](https://renewablesnow.com/news/co2-battery-developer-energy-dome-wins-eur-17-5m-in-ec-funding-809198/). ### Team and Leadership - **Claudio Spadacini (Founder and CEO)**: An engineer with over 20 years of experience in energy and industrial sectors, Spadacini founded Energy Dome to address long-duration storage challenges. He leads the company’s strategic vision and technology development. - Other key leadership roles (such as CTO or COO) are not consistently detailed in the latest public data. The company’s website and LinkedIn profiles suggest a focus on technical expertise and industry veterans, though specific names and bios are limited in current sources [Energy Dome](https://energydome.com). (Note: X handles for leadership were not verified in available data and are therefore omitted.) ### Funding and Financial Position Energy Dome has raised a total of $82.9 million over seven funding rounds from 16 investors as of the latest updates in 2025. Key funding includes a significant grant of EUR 17.5 million from the European Commission in 2022. While details of the most recent round (date and lead investors) are not fully specified in current public data, the company’s financial backing includes strategic investors and venture capital focused on clean energy innovation. As a private company, Energy Dome does not disclose market cap or stock performance. Institutional backers and strategic partnerships, such as with Google, suggest strong confidence in their technology. The company remains pre-revenue in terms of large-scale commercial contracts, though pilot projects and planned deployments indicate a transition toward revenue generation in the near future [Tracxn](https://tracxn.com/d/companies/energy-dome/__1kwMDiy9PSwuVPIeeQ8BvvGxhSxB37t6Ul5QfbVvMBw). ### Recent News and Developments | Date | Event | Details | |---------------|------------------------------------|-----------------------------------------------------------------------------------------------| | Dec 21, 2025 | CO2 Battery Global Expansion | IEEE Spectrum reports growing global interest in CO2 Batteries, with projects planned across multiple continents [IEEE Spectrum](https://spectrum.ieee.org/co2-battery-energy-storage). | | Nov 21, 2025 | Energy Storage Awards Win | Energy Dome wins three honors at the 2025 Energy Storage Awards in London for LDES innovation [Energy Dome](https://energydome.com/energy-dome-shines-at-the-2025-energy-storage-awards/). | | Oct 8, 2025 | EIC Scaling Club Feature | Energy Dome highlighted as a deep-tech scale-up transforming LDES with CO2 Battery technology [EIC Scaling Club](https://eicscalingclub.eu/news/energy-dome-interview). | | Jul 25, 2025 | Google Partnership Announcement | Long-term partnership with Google to support global deployment of LDES technology for data centers [Google Blog](https://blog.google/outreach-initiatives/sustainability/long-term-energy-storage/). | | Aug 21, 2025 | Funding Update | Total funding reported at $82.9M over 7 rounds, as per Tracxn company profile [Tracxn](https://tracxn.com/d/companies/energy-dome/__1kwMDiy9PSwuVPIeeQ8BvvGxhSxB37t6Ul5QfbVvMBw). | ### Partnerships and Collaborations - **Google**: A long-term partnership announced in July 2025 to deploy Energy Dome’s LDES technology globally, with a focus on powering data centers with clean, stored renewable energy. This collaboration provides strategic validation and access to high-demand markets [Google Blog](https://blog.google/outreach-initiatives/sustainability/long-term-energy-storage/). - **European Commission**: Received EUR 17.5 million in funding through the EIC Accelerator program in 2022, supporting technology development and scaling efforts. This partnership underscores alignment with EU decarbonization goals [Renewables Now](https://renewablesnow.com/news/co2-battery-developer-energy-dome-wins-eur-17-5m-in-ec-funding-809198/). ### New Hampshire Relevance Energy Dome’s CO2 Battery technology could have potential relevance for [[New Hampshire]], particularly in supporting the state’s renewable energy goals and grid stability needs. New Hampshire’s proximity to the ISO-NE grid and existing infrastructure like [[Seabrook Station]] (a nuclear power plant) offers opportunities for LDES to balance intermittent renewable sources and peak demand. The technology’s ability to store energy for 10-24 hours aligns well with grid-scale applications, potentially reducing reliance on fossil fuel peaker plants. The readiness of Energy Dome’s technology for NH deployment appears promising, as pilot projects are operational and commercial deployments are planned within a few years. This timeline could align with NH legislative initiatives like HB 710, which may support clean energy innovation, though specific SMR provisions are less relevant to non-nuclear storage solutions. Applications in NH could include grid power support, powering data centers (a growing sector in the Northeast), and industrial energy needs. While no direct NH connections are documented, Energy Dome’s interest in North American markets (implied by global expansion plans) suggests potential for Northeast US projects. Community sentiment and regulatory acceptance of CO2 storage would need evaluation, but the closed-loop design mitigates environmental concerns. ### Competitive Position Energy Dome operates in the competitive LDES market alongside companies like [[Form Energy]], [[Highview Power]], and [[Hydrostor]]. Compared to Form Energy’s iron-air battery (focused on multi-day storage with low-cost materials), Energy Dome’s CO2 Battery offers a unique thermodynamic approach with faster scalability using off-the-shelf components. Highview Power’s liquid air energy storage provides similar long-duration capabilities but relies on cryogenic processes, potentially less sustainable than Energy Dome’s CO2 cycle. Hydrostor’s compressed air storage competes on cost but may face geographical constraints, whereas Energy Dome’s inflatable dome design offers flexibility in siting. Energy Dome’s key advantage is its sustainable, rare-earth-free technology, though risks include unproven large-scale performance and regulatory acceptance of CO2 handling in new markets. ### Closing Note Energy Dome is at an exciting growth stage with operational pilots and promising global partnerships, poised for commercial LDES deployment in the near future. *Report generated December 24, 2025*