Long-duration energy storage Archives - Page 2 of 6 - Energy Storage

Long-duration energy storage

All Long-duration energy storage news

Projects & Applications

RheEnergise commissions first ‘high density hydro’ LDES in UK Pilot long-duration energy storage (LDES) project uses low viscosity, denser-than-water fluid. RheEnergise is panning for future projects in 10 MW to 100 MW range, with six to 20 hours of storage capacity.

Jan 27, 2026

Projects & Applications

World’s largest compressed-air storage plant switched on in China New 2.4 GWh adiabatic compressed air energy storage (CAES) plant now operational in in Jiangsu province. The large-scale CAES uses molten salt and pressurized thermal water storage to achieve high efficiency, with power generated through two 300 MW units.

Jan 27, 2026

Projects & Applications

Industry groups call on the EU to adopt a framework for long-duration energy storage LDES technologies, which include pumped hydropower, compressed air, flow batteries, thermal storage, and electricity-to-gas conversion pathways, can store energy for several hours, days, or even seasons.

Pilar Sanchez Molina

Jan 26, 2026

Finance

Indian startup Meine Electric raises $750,000 for iron–air long-duration energy storage Indian energy storage startup Meine Electric has raised $750,000 (INR 6.7 crore) in a pre-seed funding round to support its transition from laboratory-scale prototypes to pilot-ready iron–air battery systems.

Jan 23, 2026

Technologies

Noon Energy demonstrates 100+ hour ultra-long-duration energy storage system The pilot showcases a reversible solid oxide fuel cell battery and represents the first fully containerized, modular ultra-LDES system to be operated for thousands of hours, achieving more than 200 hours of energy storage capacity.

Jan 21, 2026

Technologies

China completes first full-scale underwater pumped storage trial at 65 meters depth DEC’s “Dongchu No. 1” prototype completed more than 100 charge-discharge cycles at 65 meters depth in a freshwater lake.

Jan 21, 2026

Products

GES rolls out manganese-hydrogen battery with significant cost edge over lithium-ion According to GES, the manganese-hydrogen battery it has developed represents an advanced solution for long-duration energy storage. The technology enables energy to be stored for many hours or even days, overcoming the structural limitations of lithium-ion batteries, which are primarily designed for short-duration applications.

Sergio Matalucci

Jan 15, 2026

Flow batteries

China connects world’s largest vanadium flow battery project Gigawatt-hour scale long-duration energy storage (LDES) project is expected to reduce curtailment in Xinjiang, a region of China with high solar and wind generation, and transmission bottlenecks. The flow battery installation is co-located with a PV plant.

Jan 07, 2026

Tenders

Spain unveils €90 million funding for 7 GWh of innovative pumped hydro energy storage projects Each project or entity can receive a maximum grant of €50 million ($58.5 million), and all projects must be fully completed by June 30, 2035.

Jan 06, 2026

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