Technologies
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
Sodium-ion vs lithium-ion BESS: Cost parity not before 2031
“Europe needs massive investments in energy storage to achieve true independence. This requirement cannot be met by a single technology, let alone by depending on a single geographic area. The goal is therefore to build a storage industry and a broader grid infrastructure under the control of Western countries. A strategic and ambitious goal that will take time,” Dario Bertagna, senior managing director and co-head of Clean Energy at Capital Dynamics, told pv magazine Italia.
9 hours ago
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New electrolyte tech enables stable operation of high-voltage sodium-ion batteries
U.S. researchers developed a meta-weakly solvating electrolyte that optimizes sodium-ion solvation structure, enabling faster ion transport, reduced side reactions, and improved interfacial stability in high-voltage sodium-ion batteries. This design significantly extends cycle life and outperforms conventional and localized high-concentration electrolytes by promoting more uniform and stable electrode–electrolyte interfaces.
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GES rolls out manganese-hydrogen battery with significant cost edge over lithium-ion
According to GES, the manganese-hydrogen battery it has developed represents an advanced solution for long-duration energy storage. The technology enables energy to be stored for many hours or even days, overcoming the structural limitations of lithium-ion batteries, which are primarily designed for short-duration applications.
Why sodium-ion can’t yet challenge lithium-ion’s reign
A new generation of sodium-ion (Na-ion) battery cells has been launched as an alternative to the virtual monopoly of lithium-ion (Li-ion). Although the technology is unlikely to displace significant Li-ion market share, recent improvements make Na-ion a viable solution for certain niche applications, with potential for wider usage if cost becomes competitive.
Jan 15, 2026
Dutch long-duration energy storage project targets sub-€50/kWh costs with innovative technologies
The SLDBatt project brings together TRL 7 battery technologies – including molten sodium‑salt, saltwater acid–base flow, and hydrogen–iron flow batteries – to deliver an innovative and cost-effective long-duration energy storage solution.
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Grid-forming inverters significantly enhance grid stability, US national lab finds
The Kauaʻi Island Utility Cooperative in Hawaii, which deployed storage before grid-forming inverters became available, became a test case for diagnosing grid issues that can arise with older grid-following inverters, and how grid-forming inverters can stabilize a grid.
New electrolyte design for long-life solid-state batteries
A Swiss research team has developed a low-temperature sintering and interface-coating process that significantly improves the durability of argyrodite-based solid-state batteries. The approach delivers high ionic conductivity and long cycle life, retaining 75% of capacity after 1,500 cycles.
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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.
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.
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