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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Latest News

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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
24 hours ago
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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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European project to use grid forming loads to stabilize power networks The Universitat Politècnica de Catalunya – BarcelonaTech (UPC) is leading a project that proposes using grid-forming loads, which includes storage, to provide maximum flexibility and to enable future electricity systems with very high renewable energy content.
Pilar Sanchez Molina
Sep 30, 2025
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Fourth Power makes the case for thermal storage as it raises $20 million It's not an easy life in thermal energy storage, but long-duration technology is important. Fourth Power continues to show promise, and CEO Arvin Ganesan discusses where and why it will prove out.
Tristan Rayner
Sep 29, 2025
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US startup unveils zinc-polyiodid redox flow battery with energy density of 320 Wh/L BESSt announced that its new redox flow battery technology delivers 20 times the energy density of conventional vanadium flow storage systems. The battery is based on a zinc–polyiodide redox flow chemistry developed by the Pacific Northwest National Laboratory.
Emiliano Bellini
Sep 29, 2025
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Peak Energy announces operation of first large-scale sodium ion battery in US Denver-based Peak Energy claims its sodium-ion battery system offers the lowest operating cost of any energy storage technology on the market today.
Marija Maisch
Sep 26, 2025
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Europe’s largest sodium-ion battery installation goes live Switzerland’s Phenogy has launched a megawatt-hour-scale sodium ion energy storage system at a commercial site near Bremen Airport in northern Germany. With this project, the Swiss manufacturer is making its debut on the European energy storage scene, backed by ambitions to develop fully vertically integrated local manufacturing.
Marija Maisch
Sep 25, 2025
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Global Solar Council launches first global trade association for battery storage The new body will attempt to drive manufacturing, deployment, and recycling of battery energy storage across the world, along with advocating for new technology such as grid-forming inverters.
Tristan Rayner
Sep 24, 2025
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Swiss membrane-free redox flow battery company lands $17m early-stage funding Thalwil-based Unbound Potential has secured a €14.4 million ($16.9 million) funding package for its nascent technology which includes €8 million of public grants.
Max Hall
Sep 22, 2025
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EVE Energy claims world’s first utility-scale deployment of 628Ah-cell batteries The Chinese heavyweight has set a new industry benchmark by deploying the first utility-scale battery storage project featuring 628Ah ultra-large cells and completing its first overseas deliveries.
Marija Maisch
Sep 22, 2025
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New wave of funding powers US battery tech and projects XL Batteries has secured backing to commercialize flow battery systems which use an organic electrolyte, rather than vanadium, and two utility-scale developers have landed extensive credit lines.
Max Hall
Sep 19, 2025

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