Ørsted and ‘CO2 Battery’ company Energy Dome sign MOU for 200MWh system

LinkedIn
Twitter
Reddit
Facebook
Email

Danish energy company Ørsted will run a feasibility study on the deployment of a 20MW/200MWh energy storage system using Italian startup Energy Dome’s ‘CO2 Battery’ technology.

The two companies announced a memorandum of understanding (MOU) today, signalling the start of a partnership that Energy Dome said aims to use long-duration energy storage to provide baseload renewable energy to Ørsted’s end-use customers.

Ørsted, which is majority owned by the Danish state, is a primarily renewable energy company with the world’s largest portfolio of offshore wind power. It has made small forays into energy storage including a 20MW system that went online in the UK three years ago.

The first project, a ten-hour system, would be built in continental Europe with construction to commence in the second half of 2024. The MOU includes the possibility of deploying systems at multiple Ørsted sites.

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

Kieran White, VP Europe Onshore at Ørsted, said: “We consider the CO2 Battery solution to be a really promising alternative for long-duration energy storage. This technology could potentially help us decarbonise electrical grids by making renewable energy dispatchable.”

Energy Dome’s solution, pictured above, uses a thermodynamic cycle to store and dispatch energy with a duration between four and 24 hours. It charges by drawing carbon dioxide from a large atmospheric gasholder and storing it under pressure, and dispatches by evaporating and expanding the gas into a turbine to generate electricity and return it back to the gasholder.

Its 2.5MW/4MWh demonstrator project in Sardinia, Italy, went online in June this year as reported by Energy-Storage.news, which was followed a few weeks later by US$11 million in bridge financing between a Series A and Series B, expected later this year.

Milan-based Energy Dome is also bringing a larger, 20MW/100MWh project to fruition in partnership with utility A2A, using money from its Series A.

Read Next

May 14, 2026
Long-duration energy storage (LDES) developer-operator Hydrostor intends to enter its compressed air storage project into Ontario, Canada’s recently announced LDES procurement.
Premium
May 13, 2026
We catch up with Ingmar Wilhelm, co-founder and CEO of developer and IPP Galileo, after the firm commissioned its first own-operate renewable energy project.
May 12, 2026
Chinese renewable energy solutions provider Envision Energy will explore renewables opportunities in Sydney, Nova Scotia, Canada, with Nova Scotia-based Cape Breton China Corp.
May 8, 2026
Denmark-headquartered independent power producer (IPP) Ørsted has purchased a 150MW battery energy storage system (BESS) in Michigan, US, from developer ESA Solar Energy.
May 1, 2026
Francesco Oppici, co-founder and CCO of Carbon dioxide-based long-duration energy storage (LDES) company Energy Dome tied the commercialisation path of LDES to data centres.