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
“Grid-forming technology is no longer experimental – it’s here and working”
In grids increasingly dominated by renewables, grid-forming technology is emerging as critical tool for maintaining stability and ensuring reliable power system operation. In this interview with ESS News, Rui Sun, Sungrow’s Deputy General Manager-Grid Technology Center, explains how grid-forming works, why it matters, and where the technology is already proving its value. He elaborates on technical challenges, regulatory gaps, and why grid-forming could soon become the new industry standard.
Jul 07, 2025
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US DOE awards $14m for unique energy storage systems for critical facilities and infrastructure
The US Department of Energy's (DoE) Critical Facility Energy Resilience (CiFER) fund will back an organic quinone flow battery and an iron and sodium long duration energy storage (LDES) system in California, plus a lithium battery with a novel cathode material in New York state.
Batteries with 200 Wh storage per kW of solar capacity could mitigate curtailment in Spain
Researchers have studied the energy and economic implications of the curtailment of solar energy in Spain over the past two years and concluded batteries can mitigate the problem. The academics calculated the impact of curtailment on levelized cost of energy (LCOE) and net present value (NPV).
Sonnen launches 2 MWh virtual power plant in Canadian sustainable home community
As a prototype, the Blatchford Lands VPP begins with 100 Sonnen batteries deployed throughout the community, representing nearly a half a megawatt of power and over 2 megawatt hours of storage capacity that will support the Canadian energy grid.
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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.
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.
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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.
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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.
New solid state battery charges in minutes, lasts for thousands of cycles
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new lithium metal battery that can be charged and discharged at least 6,000 times — more than any other pouch battery cell — and can be recharged in a matter of minutes.