Energy Dome has signed an industry-first commercial agreement with Google to deploy its innovative CO₂ Battery technology at scale. This has also been paired with a strategic investment from Google. The Google-Energy Dome partnership marks the first time tech giant has committed to long-duration storage in a commercial arrangement. The partnership also accelerates Google’s path towards 24/7 carbon-free energy operations by 2030.
Project factsheet
Technology: CO2 Battery long-duration storage
Mechanism: Thermo-mechanical cycle using compressed liquid CO2 for turbine energy generation
Project scaling: Modular deployment
Grid benefits: Provides grid inertia and offer smooth frequency fluctuations
Geographies targeted: Google’s operations in Europe, the Americas, and Asia-Pacific regions
Project status: Development/contracting stages
Financing: Backed by public and private funds
The company‘s commercial reach so far: Deals underway with Google, US’ Alliant Energy, Italy’s ENGIE, and India’s NTPC
Google-Energy Dome Partnership goals
Energy Dome will build CO₂ Battery projects across Europe, the Americas, and the Asia-Pacific. This is anchored by Google’s pipeline of sites that are now in development and contracting stages.
Technology used
The CO₂ Battery delivers 8–24 hours of power using a patented thermo‑mechanical cycle. This works with liquid CO₂ expanding through turbines to generate electricity. This generates inertia to stabilize grids. Therein lies a difference when compared to the use of renewables alone.
Renewables like solar and wind deliver energy capacities to the grid efficiently. They are however inflexible due to the intermittency. A long-duration energy storage solution resolves the inflexibility due to intermittency by storing the renewable energy for later use.
Why Google chose it
According to Energy Dome, their energy storage solution is modular, site‑independent and is flexible in the supply‑chain. It is also cost‑effective, meaning it is readily available for rapid deployment across Google’s data centers around the globe.
Google’s partnership with Energy Dome to power its data centers will ensure that its electricity demands are met in an efficient, reliable – and most importantly – clean manner.
Google-Energy Dome Partnership outlook
Claudio Spadacini, Energy Dome’s CEO, says the deal “proves that a 24/7 fully carbon‑free energy supply is achievable.” Across the table, Google’s EMEA Energy Director, Maud Texier, adds that the partnership reflects shared goals of unlocking clean, scalable, and affordable electricity for communities worldwide.
Also read: Google Inks $3 billion US Hydropower Deal in Largest Clean Energy Agreement of its Kind
