United States: Eolus sells a 100 MW/400 MWh energy storage project in California

Eolus completes the sale of its battery energy storage project in Poway, California. With a capacity of 100 MW/400 MWh and an estimated value of USD 230 million, this transaction highlights the growth of the U.S. energy market.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Eolus, a developer of renewable energy projects, has signed an agreement to sell its Pome battery energy storage project located in Poway, California. The project, with a planned capacity of 100 MW/400 MWh, is under construction and is scheduled for commercial operation in the first half of 2025. The total value of the transaction is estimated between USD 230 million and USD 235.5 million.

A key project for the Californian energy market

The Pome project is supported by a ten-year tolling agreement with a Californian load-serving entity. This agreement will allow electricity to be stored and redistributed when needed, offering critical flexibility to stabilize the grid in a state heavily reliant on intermittent renewable energy sources.

Aligned with California’s ambitious energy goals, the project reflects the growing demand for storage solutions to support the transition to a low-carbon economy. The battery is currently being installed on-site, with the transaction expected to close in the first quarter of 2025, pending specific conditions.

An expanding sector in the United States

Since 2015, Eolus has been investing in renewable energy and storage projects across the U.S. The Pome project represents its fourth major sale in the country, emphasizing the attractiveness of the market and the rise of large-scale energy storage technologies.

According to industry analysts, California, with its ambitious carbon neutrality goals, remains one of the primary markets for energy storage solutions. Recent investments in infrastructures like Pome demonstrate the private sector’s interest in this strategic area.

Outlook for energy storage

The development of the Pome project is part of a global trend toward independent storage solutions. These infrastructures address the intermittency of renewable energy while meeting the flexibility needs of power grids.

The planned 400 MWh capacity for this project could serve as a model for other U.S. states facing similar challenges. The success of this transaction underscores the importance of partnerships between private investors and public entities in expanding energy infrastructure across the United States.

The global battery energy storage systems market anticipates 28.8% annual growth through 2033, supported by industrial electrification, government incentives and grid modernisation efforts.
Group1 and Michigan Potash & Salt Company have signed an agreement to create a domestic potassium-based battery supply chain, relying on local mining and production free from critical metals.
A battery storage project developed in Shiga Prefecture marks a new step for the Japanese industry, with the official commissioning of a 4MWh facility aimed at the primary balancing market.
Nine battery storage projects totalling 18MW will be built by au Renewable Energy across the Chubu, Kansai and Kyushu regions, with commissioning scheduled through March 2027.
ACEnergy’s Central BESS project has been approved with a $3.6mn benefit-sharing plan for local and Indigenous communities.
Operator Fullmark Energy has finalised a $46mn investment tax credit transfer linked to its 125MW Redwood storage portfolio in Southern California, strengthening its ability to pursue further growth in the sector.
Eos Energy confirmed the expiry of its public warrants following the exercise of 6.7 million units, generating $76.9mn to finance its industrial projects in the United States.
Trina Storage and Pacific Green Energy Group have signed a memorandum of understanding for the supply of 5GWh of battery systems by 2028, reinforcing their activities in the Australian and international energy storage market.
HyperStrong commits to purchase at least 200 GWh of battery cells from CATL by 2028, as part of a strategic partnership aimed at structuring a global energy storage ecosystem.
A report urges European states to rapidly deploy long-duration energy storage technologies, deemed essential to avoid building obsolete gas assets and reduce grid costs by 2040.
LibertyStream has signed a memorandum of understanding with Packet Digital to secure a local supply of lithium carbonate for industrial and military battery production, backed by approximately $2.7mn in funding.
US-based Rondo Energy and SCG Cleanergy have completed the installation of a 33 MWh heat battery at a cement plant in Thailand, the first of its kind in Southeast Asia, delivering steam to power a turbine for industrial electricity generation.
Entech and Primeo Energie create Primtech Batteries to develop battery electricity storage projects in France and the European Union, targeting 100 MW installed by 2029.
Three New York public high schools are introducing a new energy storage module this year, through a partnership between NineDot Energy and Solar One aimed at preparing students for careers in distributed energy.
Nuvve Holding Corp. plans three 2MW battery installations in Eastern Zealand to strengthen the Danish grid and optimise revenues through its proprietary software platform.
HS Hyosung partners with Umicore to produce silicon anodes, a key material for next-generation batteries, through a €120 mn investment to strengthen its position in energy storage.
LG Energy Solution partners with South 8 Technologies to develop lithium-ion batteries capable of operating at -60 °C, strengthening its position in the space sector alongside KULR Technology Group and NASA.
Masdar commits to developing a 300MW/600MWh battery storage system in Uzbekistan, marking a major step in modernising the national grid and securing investments in renewable energy.
Jabil and Inno will co-develop a 15,000 sqm plant in Rayong, Thailand, to manufacture metal enclosures for battery energy storage systems, aiming to enhance vertical integration and secure supply chains.
Adani Group launches a 1126 MW project in Khavda, marking its first entry into energy storage, with one of the largest BESS systems ever built at a single site.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.