V-flow batteries are fully containerized, nonflammable, compact, reusable over semi-infinite cycles, discharge 100% of the stored energy and do not degrade for more than 20 years.

Flow batteries consist of two tanks of liquid, which simply sit there until needed. When pumped into a reactor, the two solutions flow adjacent to each other past a membrane, and generate a charge by moving electrons back and forth during charging and discharging.

This type of battery can offer almost unlimited energy capacity simply by using larger electrolyte storage tanks. It can be left completely discharged for long periods with no ill effects, making maintenance simpler than other batteries. Because of these unique properties, the new V-flow batteries reduce the cost of storage to about 5¢/kWh.

These batteries are rather large and best suited to industrial and utility scale applications. But the V-flow battery outcompetes Li-ion, and any other solid battery, for utility-scale applications. They’re just safer, more scalable, longer-lasting and cheaper - less than half the cost per kWh.

U.S. energy storage increases 46% in third quarter. Hawaii, California, Massachusetts aim to be powered by 100% renewable energy by 2045.

Global storage market to double six times by 2030 to a total of 305 GWh. China reportedly started construction of world’s biggest 800 MWh battery and it's made with vanadium.

Lithium batteries' parasitic load factor and scalability may hamper growth. Vanadium batteries could start dominating the utility energy storage sector due to their proven reliability and longer battery life.