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Rendering of a large-scale flow battery project, with electrolyte tanks and battery stacks in foreground, surrounded by renewable energy generation and industrial operations.

Non-lithium energy storage startups Fourth Power, Unbound Potential and XL Batteries raise financing

September 24, 2025
A trio of energy storage startups: XL Batteries, Unbound Potential and Fourth Power, have raised financing for emerging flow battery and thermal storage technologies.
Form Energy's scalable battery storage tech involves rusting and then de-rusting iron as it discharges and charges. Image: Form Energy.

Form Energy in talks with Georgia Power for 100-hour iron-air battery storage project

February 10, 2022
Multi-day battery storage tech startup Form Energy is working with Georgia Power on a potential 15MW/1,500MWh project in the US utility company’s service area. 
The 2MW/8MWh VRFB Sumitomo Electric supplied for utility SDG&E in California. Image: Sumitomo / SDGE.

ROUNDUP: California VRFB microgrid trial complete, Acciona tries zinc-bromide batteries, Lithium-sulfur startup Zeta nets US$23m financing

February 7, 2022
News in brief from around the world in energy storage.

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US ROUNDUP: Cross-industry collaborations target energy storage growth and accessibility

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Longroad Energy signs Utah BESS offtake deal, tariff-related price adjustments could increase cost by 4.7% 

Xcel Energy proposes 200MW distributed battery storage network in Minnesota

Greenflash Infrastructure secures financing for Texas’s largest standalone BESS

Bitesize takeaways from Energy Storage Summit Asia 2025

Nightpeak Energy commences operation of 300MWh Texas BESS

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