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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UL Solutions launches certification program for bidirectional EV storage UL Solutions has launched a certification program for bidirectional electric vehicle supply equipment (BEVSE), opening formal compliance testing for AC-based vehicle-to-grid systems under the UL 1741 Supplement SC standard.
Ben Zientara
3 hours ago
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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

All Technologies news

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indian flag
What to expect at India Energy Storage Week India Energy Storage Alliance (IESA) is set to host its annual international conference and exhibition event, India Energy Storage Week (IESW), from July 1 to July 5, 2024, in New Delhi. The event is expected to witness the participation of 150+ key partners and exhibitors and 1000+ companies, many of which will be unveiling major battery storage plans.
Uma Gupta
Jun 27, 2024
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all-solid-state zinc-iodine battery
New solid state zinc battery with superb cycle performance Researchers in Australia have developed a new class of solid electrolytes for rechargeable aqueous zinc-iodine batteries, which has allowed for extended lifespan and high-efficiency. Symmetric cells employing this electrolyte have demonstrated excellent cycle performance, maintaining stability for approximately 5,000 hours at room temperature, while all-solid-state ZnI2 batteries exhibit over 7,000 cycles with a capacity retention exceeding 72.2%.
Marija Maisch
Jun 07, 2024
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Case of zinc-ion battery
Zinc-ion batteries: a less volatile alternative? At a time of growing demand for battery energy storage, pv magazine spoke with Eloisa de Castro, CEO of Enerpoly, a Swedish company preparing to launch the world's first zinc-ion battery megafactory on its home turf. Having solved rechargeability issues, the company expects its safe and sustainable zinc-ion batteries, which rely solely on a European supply chain, to increase their market share in the years to come.
Sergio Matalucci
Jun 06, 2024
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Handshake
Altris, Stora Enso to develop sodium-ion anode from lignin Swedish sodium-ion battery specialist Altris has partnered with Stora Enso, Finish-Swedish cellulose and paper maker, to drive the adaptation of the corporation’s hard carbon solution Lignode as an anode material in its sodium-ion battery cells.
Marija Maisch
Jun 06, 2024
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Silver City
Long-duration storage key for Australia’s energy security, report finds Australia's Clean Energy Council has launched a new report, exploring emerging long duration energy storage technologies capable of firming renewables in the wake of coal-fired power generation closures.
Ev Foley
Jun 05, 2024
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Torus building
US commercial real estate to host VPP-connected flywheels and batteries US-based technology provider Torus has agreed to supply nearly 26 MWh of energy storage for Gardner Group's commercial real estate portfolio. The project will integrate battery and flywheel energy storage systems (BESS, FESS) with Torus' proprietary energy management platform. 
Blathnaid O’Dea
Jun 05, 2024
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Energy Vault unveils design partnership for gravity storage in skyscrapers The partnership will see architecture and engineering firm Skidmore, Owings & Merrill (SOM), responsible for some of the world’s tallest buildings, incorporate Energy Vault’s gravity energy storage technology into tall buildings in urban environments and deployable structures in natural environments.
Patrick Jowett
Jun 04, 2024
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Illustration of solid-state Na-air battery
High-efficiency, high-energy all-solid-state sodium-air battery Researchers in South Korea have successfully demonstrated the use of free ambient air as a fuel leveraging a sodium-based solid electrolyte to tackle the carbonate issue that has been holding back the rollout of metal-air batteries. Their sodium-air battery cell has demonstrated high efficiency, incresed energy density, and a broad voltage range.
Marija Maisch
Jun 03, 2024
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Chart showing the fully installed energy storage system average capex and ranges by technology
LDES poised to outcompete lithium-ion batteries While most long-duration energy storage (LDES) technologies are still early-stage and costly compared to lithium-ion batteries, some have already or are set to achieve lower costs for longer durations, finds BloombergNEF.
Marija Maisch
May 31, 2024

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