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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Battery and battery tech developments in brief from the floor of Intersolar 2025 Europe’s largest solar power event filled 18 very large halls in Munich, and new launches ranged from balcony solar to cow poop innovations.
Tristan Rayner, John Fitzgerald Weaver
May 12, 2025
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Munich research team improves lithium-ion conductors for solid-state batteries A new material made of lithium, antimony, and scandium is said to conduct lithium ions over 30 percent faster than any previously known material. According to the scientists, it also offers thermal stability.
Petra Hannen
May 09, 2025
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Dutch manufacturer makes switch from bromine to iron flow batteries due to ‘geopolitical turbulence’ Netherlands-based Elestor has announced it will move from hydrogen-bromine to hydrogen-iron flow batteries because of the worsening geopolitical situation.
Max Hall
May 07, 2025
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Scientists in UK build solar redox flow battery with 9.54% solar-to-chemical efficiency The PV-driven redox flow battery can reportedly achieve a maximum solar-to-output electricity efficiency (SOEE) of 3.11% during a 36-hour period. The system incorporates a 25 sq cm heterojunction (HJT) photovoltaic device and is based on a neutral-pH aqueous iodine-bromine redox couple.
Emiliano Bellini
May 06, 2025
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Polar Night Energy plans second pilot sand-battery in Finland Polar Night Energy will build a second pilot plant in southern Finland to test its power-to-heat-to-power sand battery technology. The project aims to demonstrate the system’s ability to reconvert stored heat into electricity.
Patrick Jowett
May 05, 2025
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US’ Georgia Tech, Stryten Energy tap lead battery innovation A new battery energy storage system (BESS) will combine academic research and real-world deployment to create a living laboratory for energy storage experimentation.
Phoebe Skok
Apr 28, 2025
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Consultation over 5 GWh French sodium-ion battery factory Startup Tiamat wants an initial 700 MWh-per-year pilot line operational but a 2025 commissioning date will likely be pushed back into next year.
Marie Beyer
Apr 25, 2025

All Technologies news

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China southern power grid
China switches on first large-scale sodium-ion battery China Southern Power Grid has deployed a 10 MWh sodium-ion battery in China’s Guangxi Zhuang region. It is the first phase of a 100 MWh project.
Pilar Sanchez Molina
May 21, 2024
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Schematic of the system
Integrating pumped hydro with compressed air energy storage A group of Chinese researchers has made a first attempt to integrate pumped hydro with compressed air storage and has found the latter may help the former to better deal with large head variations.
Emiliano Bellini
May 16, 2024
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Varta group
German initiative to develop scalable sodium-ion batteries A collaborative project led by German battery supplier Varta aims to develop industrial-scale sodium-ion battery technology. The final product of the three-year, €7.5 million ($8.08 million) project will be a small series of round cells for electric vehicles and stationary storage systems.
Patrick Jowett
May 16, 2024
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Diagrams of vanadium redox flow batteries
Evaluating the profitability of vanadium flow batteries Researchers in Italy have estimated the profitability of future vanadium redox flow batteries based on real device and market parameters and found that market evolutions are heading to much more competitive systems, with capital costs down to €260/kWh at a storage duration of 10 hours.
Marija Maisch
May 01, 2024
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Honda electric vehicle
Car batteries can optimize the power grid Australian researchers have found that if 10% of vehicles are electric and utilize V2G connections, they could reduce peak electricity demand at local substations by 6% and save car owners hundreds of dollars per year on charging costs.
John Fitzgerald Weaver
Mar 13, 2024
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World map with pumped hydro markers
Global atlas for pumped hydro at mining sites The researchers that created the atlas considered mining pits, pit lakes and tailings ponds within mining sites and located nearby reservoirs. The selected sites have a potential storage capacity of 30 TWh.
Emiliano Bellini
Feb 28, 2024
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Long-duration storage
Long-duration storage market to hit $223 billion in 20 years, says IDTechEx Alternatives to lithium-ion batteries will likely emerge in the years to come, according to a new report by IDTechEx.
Ryan Kennedy
Feb 06, 2024
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Lamborghini with lithium-ion batteries
Organic cathode for high-energy, fast-charging lithium-ion batteries Massachusetts Institute of Technology (MIT) researchers have developed a new organic cathode material with an energy density higher than most cobalt-based cathodes. It can charge–discharge in as little as six minutes. Automaker Lamborghini has licensed the patent for the technology.
Marija Maisch
Feb 01, 2024
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Stack of a vanadium flow battery
Chinese researchers develop high power density vanadium flow battery stack Researchers at the Dalian Institute of Chemical Physics (DICP) in China have developed a 70 kW-level vanadium flow battery stack. The newly designed stack comes in 40% below current 30 kW-level stacks in terms of costs, due to its volume power density of 130 kW/m3.
Marija Maisch
Jan 24, 2024

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