Technologies
Technologies pv magazine
Technologies pv magazine

Energy storage systems come in many forms, leveraging different technology types. A class of electrochemical storage, lithium-ion batteries have established themselves as the industry standard.

But there are many new technologies vying for their market share.

Sodium-ion batteries are widely considered a sustainable and resource-saving answer to future energy storage, while flow batteries offer a viable alternative in long-duration storage applications.
However, the path to commercialization is not a straightforward one.

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ESS Tech to add 8.5 GWh of US-made sodium‑ion batteries to its portfolio ESS Tech is complementing its iron flow storage offering, which is engeeneered for the 8–24 hour long-duration segment, with sodium-ion battery products aimed at short and medium-duration applications.
Marija Maisch
Apr 30, 2026
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New partnership advances sodium-ion manufacturing in Spain In a week marked by the largest sodium-ion battery order to date, widely seen as a watershed moment for the technology’s commercialization at scale, one of Europe’s emerging players, Spain’s Bihar Batteries, is strengthening the outlook for European-made sodium-ion batteries.
Marija Maisch
Apr 29, 2026
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CATL secures world’s largest sodium-ion battery order with Hyperstrong The two companies announced a 60 GWh supply agreement on Monday, marking a pivotal step in the commercialization of sodium-ion battery technology.
Marija Maisch
Apr 27, 2026
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Control, not capacity, could be the next driver of US residential storage investment Investors are shifting focus from deployment growth to platforms that can orchestrate and monetize battery fleets.
Phoebe Skok
Apr 17, 2026
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Volkswagen announces vehicle-to-grid offering in Germany, soon wider Europe Registration will be possible from June, and the service will then be available from the fourth quarter under VW's Elli brand. The integrated offer consists of an electric vehicle, app, electricity tariff, smart meter, wallbox, and installation.
Sandra Enkhardt
Apr 17, 2026
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Researchers make significant advancement into thermal runaway-free sodium-ion batteries The development of a Polymerizable Non-flammable Electrolyte appears to have helped sodium-ion batteries towards a eureka moment for safety.
Tristan Rayner
Apr 10, 2026
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Netherlands: TenneT and GES ink landmark deal for 800 MWh “congestion mitigator” battery Dutch grid operator TenneT has signed a capacity control contract with Green Energy Storage (GES) for a 200 MW / 800 MWh battery, marking a shift in how the Netherlands manages its severely congested high-voltage grid.
Tristan Rayner
Apr 10, 2026

All Technologies news

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China southern power grid
Sodium-ion battery cells already near lithium-ion cost parity, set to get cheaper By 2050, sodium-ion batteries with fast learning rates could deliver storage at 11–14 €/MWh – cheaper than lithium-ion at 16–22 €/MWh – while also offering higher energy-to-power ratios and high cycle durability, a new research finds.
Marija Maisch
Jan 09, 2026
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Cambridge startup claims its electrolytes can triple flow battery energy density A startup led by Cambridge University scientists and the former chair of Oxford PV is attempting to commercialize flow battery electrolytes with greater energy density than vanadium-based batteries. Kodiaq Technologies claims its electrolytes can be deployed as a drop-in solution for redox flow batteries.
Matthew Lynas
Jan 07, 2026
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New European solid-state battery business targets commercial production Axen, Syensqo and IFPEN establish new company to produce high performance sulfide solid electrolytes for solid-state batteries in Europe. New company Argylium will develop its electrolyte portfolio at facilities in France.
Matthew Lynas
Jan 07, 2026
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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.
Matthew Lynas
Jan 07, 2026
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Corrosion-free bromine flow battery promises longer life and higher energy density A new two-electron bromine chemistry sharply cuts corrosion while boosting performance, opening a clearer path for zinc–bromine flow batteries at grid scale.
Vincent Shaw
Jan 06, 2026
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Mitigating sodium-ion battery degradation through scandium doping A team at Tokyo University of Science (TUS) has identified a structural mechanism by which adding small amounts of scandium to layered sodium manganese oxide cathodes slows the degradation that typically limits sodium-ion battery lifetimes.
Brian Publicover
Jan 05, 2026
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What’s next for battery technology in 2026 Longer-duration storage, safety-driven procurement and Foreign Entity of Concern (FEOC) compliance in the United States compliance are starting to push alternative chemistries closer to scale.
Phoebe Skok
Jan 02, 2026
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na-ion
CATL confirms significant upgrade to sodium-ion battery product range and scale into 2026 CATL announced it expects a new trend of "sodium and lithium batteries shining brightly together."
Tristan Rayner
Dec 29, 2025
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Silver City
Using horizontally connected salt caverns for compressed air storage Researchers in China have investigated the long-term stability of horizontally connected salt caverns used for compressed air energy storage. They found about 85% of the existing salt caverns in their home country are are suitable for this configuration.
Lior Kahana
Dec 22, 2025

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