Latest price of all-vanadium liquid flow energy storage battery

The United States has some vanadium flow battery installations, albeit at a smaller scale. One is a microgrid pilot project in California that was completed in January 2022.

Vanadium is ideal for flow batteries because it doesn't degrade unless there's a leak causing the material to flow from one tank through the membrane to the other side. Even in that case, MIT researchers say the cross-contamination is temporary, and only the oxidation states will be affected.

Researchers from MIT have demonstrated a techno-economic framework to compare the levelized cost of storage in redox flow batteries with chemistries cheaper and more abundant than incumbent vanadium.

But vanadium comes with its own supply chain issues. As the adoption of long-duration energy storage grows, demand for vanadium will skyrocket. Pure vanadium is rarely naturally occurring, though, and it's usually mined as a byproduct or is otherwise found in compounds. Current production is segmented in China, Russia, and South Africa.

The world's largest flow battery, one using the elemental metal vanadium, came online in China in 2022 with a capacity of 100 megawatts (MW) and 400 megawatt-hours (MWh)—enough for 200,000 residents. Its operators plan to expand that capacity to 200 MW/800 MWh.

As an important branch of RFBs, all-vanadium RFBs (VRFBs) have become the most commercialized and technologically mature batteries among current RFBs due to their intrinsic safety, no pollution, high energy efficiency, excellent charge and discharge performance, long cycle life, and excellent capacity-power decoupling .