Energy Dome 的 CO2 电池豪赌：首个 20 MW/200 MWh 商业电站已在撒丁岛投运

做的是什么生意

Energy Dome builds 'CO2 Battery' plants that liquefy carbon dioxide under pressure and expand it through a turbine, discharging up to 10 hours of stored grid power.

启动资金：About €54M raised by April 2023, including an $11M Series A (2021) and a €40M (~$44M) Series B; Google made an undisclosed strategic investment in 2025.

起因

Milan engineer Claudio Spadacini — who had already founded geothermal company Exergy and biogas company Sebigas — launched Energy Dome in February 2020 with Dario Rizzi and Francesco Oppici. The idea was a closed-loop 'CO2 Battery': compress carbon dioxide into liquid, store it in an inflatable dome, then let it expand through a turbine to return electricity for hours, with no lithium or rare materials.

经过

A demonstration plant at Ottana, Sardinia, started in 2022 and fed the Italian grid for more than three years. In April 2023 Energy Dome closed a €40M (~$44M) Series B co-led by Eni Next and Neva SGR, taking total funding to about €54M, with a claimed qualified pipeline above 9 GWh. In December 2024 ENGIE signed an offtake agreement for the full-scale plant, and the 20 MW/200 MWh unit — built on a remediated industrial site at Ottana — was commissioned in Q1 2025 and fully operational by July 2025, able to supply about 73 GWh a year to the grid. In August 2025 Google announced a strategic agreement and an undisclosed investment.

结果

Still running and scaling: the Ottana plant operates as a grid-connected commercial asset with 10-hour discharge at 75% round-trip efficiency and won Best EU Project Under 100MW at the 2025 Energy Storage Awards. Construction of a facility in India started with commissioning targeted for H1 2026, a Wisconsin project with Alliant Energy was approved, and the global pipeline exceeded 10 GWh.

可借鉴之处

在新储能化学物理特性占优的领域（10 小时以上）证明其价值，而非在 4 小时经济性上与锂电竞争；商业灯塔电站加承购方将示范信誉转化为项目储备。