CO2 Battery firm Energy Dome increases Series B to €55 million with second tranche

July 20, 2023
LinkedIn
Twitter
Reddit
Facebook
Email

Italy-based Energy Dome, the maker of a proprietary CO2-based long-duration energy storage system, has closed the second tranche of its Series B, raising another €15 million and bringing the total to €55 million (US$62 million).

It builds on the €40 million first tranche the company raised in April. New investors in the second tranche include Oman’s national venture capital (VC) investment arm Innovation Development Oman Investments, the VC arm of tank storage manufacturer Royal Vopak, and investors represented by impact investing advisory firm Sagana.

Existing investors 360 Capital and CDP Venture Capital also participated in the second tranche, having already participated in the first.

It brings Energy Dome’s total fundraising to nearly €100million to-date, following €17.5 million of grant and equity from the European Innovation Council in January plus money raised across earlier rounds prior to 2023.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Its tech is based on a thermodynamic cycle, which charges by drawing carbon dioxide from a ‘Dome’ gasholder, storing it under pressure, and dispatching by evaporating and expanding the gas through a turbine back into the gasholder.

The additional funding will help the company scale commercially and execute on a pipeline of over 9GWh of projects in five continents, it said. It will also help it complete its first utility-scale project, a 20MW/200MWh project it expects to have operational in 2024 (its largest operational system is a 2.5MW/4MWh one in Sicily). The announcement did not specify but it could be one it was exploring with Danish energy giant Ørsted.

Energy Dome has also signed a memorandum of understanding (MOU) with the Oman Investment
Authority, which Innovation Development Oman Investments is part of, to explore potential areas of collaboration in the country.

Claudio Spadacini, founder and CEO of Energy Dome, said: “We offer our customers unparalleled flexibility and value. They can either enter into long-term capacity offtake agreements with Energy Dome, where we will fund, build, own, and operate the CO2 Battery for the customer under a Storage-as-a-Service model.”

“This allows the customer to have reliable, clean and affordable power far below the cost of pumped hydro or Lithium Ion. Alternatively, the customer can opt to buy the CO2 Battery directly from Energy Dome with a performance guarantee under an Original Equipment Manufacturer model.”

The firm’s SVP of strategy, corporate development and investor relations Ben Potter recently gave an interview to Energy-Storage.news where he claimed that its technology can reach a Capex per MWh half that of a four-hour lithium-ion battery storage project.

Read Next

March 31, 2026
Form Energy, Noon Energy and Ore Energy are all commercialising proprietary 100-hour battery technologies for LDES applications, but how do they compare on metrics like cost, energy density and round-trip efficiency? We look at what they have revealed, as well as what they haven’t.
March 31, 2026
Hithium has signed a cooperation agreement for a potential 3GWh of battery storage deployments in the Asia-Pacific region with infrastructure investor Brawn Capital.
Premium
March 31, 2026
Climate Energy Finance’s Tim Buckley argues that geopolitical instability exposes Australia’s oil dependency and positions the country as a safe haven for international renewable energy capital.
March 30, 2026
Chile continues to be Latin America’s hotspot for energy storage deployments, with a major new deal for Grenergy and Engie bringing a project online in the past week.
March 30, 2026
European battery storage optimisers Entrix and GridBeyond, have between them raised €55 million (US$63.22 million) in financing from investors.