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Long-term storage grows by 49% in 2025 despite the financing crisis
A report by Wood Mackenzie indicates that the deployment of long-duration energy storage (LDES) technologies exceeded 15 GWh in 2025, but declining venture capital investment and falling lithium battery costs are hindering their commercial viability.
Mar 10, 2026
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Small 24/7 clean power commitments could cut costs for long-duration storage
TU Berlin researchers say early demand for round-the-clock carbon-free electricity could help bring advanced energy technologies to market faster through technology learning effects. Grant funding for the research was provided by Google, which has since announced plans to build the world’s largest iron-air battery.
World’s largest compressed air energy storage station now fully operational in China
With 600 MW of installed capacity and 2,400 MWh of storage, the Huai'an Salt Cavern project is now the world’s largest compressed air energy storage facility, surpassing the 300 MW/1,500 MWh project commissioned earlier this year that previously held the title.
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Origin begins construction of 240 MW / 1,030 MWh stage of Eraring big battery
Origin Energy previously approved the financing to construct the second-stage 240 MW / 1,030 MWh four-hour duration grid-forming battery at Eraring Power Station in New South Wales, in Australia which boosted the site’s energy storage to over 2 GWh.
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Munich Re asset manager buys 231 MWh battery storage project in North Rhine-Westphalia
MEAG, the asset manager of Munich Re and Ergo Group, has acquired the shares in a ready-to-build battery energy storage system (BESS) project in Metelen. SMA Altenso will provide engineering, procurement, and construction and operations and maintenance services for the battery park, which is scheduled to go online in the second half of 2025.
EIB backs Red Electrica’s 3.5 GWh pumped storage-desalination plant in Gran Canaria
The EUR 300 million ($324 million) loan will finance the construction and commissioning of the Salto de Chira reversible pumped storage hydroelectric power plant that Red Eléctrica, a subsidiary of Redeia, is building in Gran Canaria.
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Texan councillor warns ‘blackouts will happen’ after city rejects application for battery on fire safety fears
Councillors in the Texan city of Katy voted against plans for a battery energy storage system (BESS) because of fire concerns, overriding the recommendation of their own planning and zoning committee.
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