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The Pacific Northwest National Laboratory (PNNL) in the United States stated that the laboratory has collaborated with two companies to develop long-term energy storage technology, and the third license is the final license for its all vanadium flow battery.



In addition to commercial licensing, PNNL has also developed a high-performance mixed acid electrolyte compatible with all vanadium flow batteries. It is said that this electrolyte can store more energy than many other technologies within a certain temperature range, and the electrolyte can be obtained on a non exclusive basis.



Allan Tuan, Commercial Manager of PNNL Energy, Grid, and Advanced Fuel Research, said, "This emerging grid scale storage technology has enormous commercial and energy security potential. We are eager to collaborate with more industry partners to bring this technology to the market and support the expansion of the use of renewable energy on the grid."



Professor Skyllas Kazacos, one of the inventors of all vanadium flow batteries, said that this provides opportunities for companies and research groups to participate, but it will take some time for the broader energy sector to become interested in long-term energy storage potential.



Skyllas Kazacos said, "This will take a considerable amount of time, but once they start observing significant issues with grid stability, they will realize that the stability of the grid is not as good under high penetration rates of renewable energy."



"People have realized that for the kind of energy storage system we need for renewable energy, you really need a long duration. That's why flow batteries have attracted a lot of attention."



The US government has identified long-term energy storage as a key pillar of its decarbonization efforts in the energy sector. The Secretary of Energy tweeted that flow batteries are "beneficial for grid energy storage.". In the past year, it has announced nearly $100 million in funding for long-term energy storage research and support.



Of this, $17.9 million will be used for four R&D projects for liquid flow battery manufacturing, while $75 million will be used for PNNL's long-term energy storage research center, which is expected to open in 2025.



The UK government has invested £ 68 million ($90 million) in long-term energy storage through competitive financing opportunities, and last week publicly announced a £ 6.7 million reward for 24 independent projects involving a range of technologies.



Meanwhile, in Europe, some countries and continental trade associations have recently urged the EU to support long-term energy storage in the European Green Agreement package.



The California government also announced last year an investment of $380 million to support a two-year long-term energy storage project, which is the largest case of such funding to date.



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