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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Iron-mediated cathode enables 206 Wh/kg sodium-ion pouch cell Chinese researchers have developed an iron-mediated strategy that improves the reversibility and stability of lattice-oxygen redox reactions in sodium-ion battery cathodes. A 15.8 Ah pouch cell using the cathode achieved an energy density of 206 Wh/kg, with lattice-oxygen redox reversibility reaching 99%.
Lior Kahana
Sep 11, 2026
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NTPC invites bids for sodium-ion battery pilot in India India’s NTPC plans to set up a sodium-ion battery energy storage system (BESS) pilot to assess the technology’s performance, safety, and commercial viability under local grid and climate conditions.
Uma Gupta
Sep 10, 2026
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New electrode design by German institutes increases battery energy density by up to 15% Fraunhofer ISE and its partners have developed thicker electrodes that could increase battery cell energy density by 10% to 15% without adding weight. The PFAS-free, solvent-free concept has been demonstrated in lithium-ion, sodium-ion, and zinc-ion cells and is designed for cost-effective mass production.
Lior Kahana
Sep 09, 2026
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HiNa Battery scales Korean sodium-ion partnership from 15 MWh to 10 GWh The agreement follows a 15 MWh validation program covering utility-scale, commercial and residential storage applications.
Vincent Shaw
Sep 08, 2026
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Interview with ESS Inc CEO Drew Buckley ESS Inc President and CEO Drew Buckley tells ESS News the company has pivoted its strategy in 2026 around sodium-ion storage, citing nearly $1 billion in early-stage opportunities and a more measured approach to its iron flow technology amid tight liquidity.
Tristan Rayner
Sep 04, 2026
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UNIGRID completes Hyundai accelerator test of sodium-ion cells UNIGRID has completed technology validation of its sodium chromium oxide (NCO) sodium-ion cells through Hyundai Motor Group's ZER01NE Accelerator program, with Hyundai planning to jointly develop a sodium-ion battery energy storage system (BESS).
Brian Publicover
Sep 02, 2026
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Texas Instruments introduces chip-level diagnostics to improve grid-scale battery cell safety Active monitoring via EIS results in a new approach to monitoring battery cell health, resulting in a step-change in understanding, safety, and bankability.
Tristan Rayner
Sep 02, 2026

All Technologies news

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Made-in-Australia microemulsion flow battery for long-duration storage Allegro Energy and Origin Energy will install Australia’s first microemulsion flow battery at the Eraring coal-fired power station, in New South Wales.
Ev Foley
Mar 28, 2025
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Power electronics for customized battery energy storage Startup p&e power&energy is offering multilevel inverter technology to manufacturers and integrators of battery energy storage systems (BESS). Interconnecting individual cells enables cost savings and the service life and efficiency of the systems, which can be individually configured for each application, can be increased.
Cornelia Lichner
Mar 27, 2025
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Sulzer, Hyme Energy to commercialize novel molten salt energy storage Sulzer is developing advanced pumps for Hyme Energy’s patented molten hydroxide salt energy storage technology. Building on the success of the pioneering Molten Salts Storage (MOSS) project in Denmark, the partners now seek to commercilize the solution.
Marija Maisch
Mar 27, 2025
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Pathway to commercialization of aqueous sulfur-based redox flow batteries Researchers in China have identified a series of engineering strategies to bring aqueous sulfur-based redox flow batteries closer to commercial production. Improving catalyst design, ion-selective membranes, and device integration will be key to solve this battery storage technology’s issues.
Emiliano Bellini
Mar 27, 2025
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China announces procurement of sodium-ion batteries with price ceiling at $150/kWh The innovative project located in a suburban district in the south of Shanghai will integrate five different energy storage technologies, including sodium-ion batteries. Its first phase will have a cumulative capacity of 40 MW/160 MWh.
Marija Maisch
Mar 24, 2025
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Inaccurate battery state of health measurements impact revenue, safety, operations A paper from renewable energy technology company 3E lays out strategies to manage battery degradation, and states inaccurate battery energy storage system (BESS) state of health (SoH) measurements can negatively impact safety, impede asset evaluation, and result in financial losses.
Phoebe Skok
Mar 24, 2025
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Sweden’s Cellfion developing PFAS-free membranes for energy storage The startup is exploring membranes free from the per- and polyfluoroalkyl substances (PFAS) known as ‘forever chemicals’ and its wood-derived, cellulose-based products could be used for long-duration energy storage (LDES).
Blathnaid O’Dea
Mar 21, 2025
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Australia’s Altech secures permit to build sodium-ion battery factory in Germany The German subsidiary of the Perth-based sodium chloride solid-state battery specialist is moving ahead with its plans to build a 120 MWh production plant in Saxony, Germany. The project is expected to amount to around €156 million ($170 million).
Marija Maisch
Mar 19, 2025
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Estonia’s Freen launches 10 kWh residential sodium-ion battery – updated with price The new home energy storage solution from Estonia's Freen is based on sodium-ion battery chemistry and can be coupled with both rooftop PV and small wind turbines.
Marija Maisch
Mar 18, 2025

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