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Stryten Energy plans to begin marketing its vanadium redox flow batteries in January 2025. In the meantime, it has deployed a 20 kW/120 kWh pilot version of the storage system at a facility operated by Snapping Shoals EMC, an electric cooperative in Georgia (United States).
Stryten Energy, an American battery technology company, has recently installed a pilot-sized version of its vanadium redox flow battery (VRFB) at a facility operated by Snapping Shoals EMC, an electric cooperative in the state. from Georgia, in the United States.
The battery is a 20 kW/120 kWh VRFB with a recharge time of 7.5 hours and connected to the 480V grid. It is made up of several modules with built-in safety devices, each of which operates independently at 6.67 kW/40 kWh per cycle.
“We have specifically designed and sized this system for an initial evaluation phase with Snapping Shoals, where we will conduct long-term testing of six hours or more,” Scott Childers, vice president of Essential Power at Stryten Energy, told pv magazine .
Vanadium electrolyte aqueous solution is a proprietary combination of sulfuric acid and vanadium oxides. It is stable up to 50ºC, but the system can be designed to mitigate the effects of external temperature beyond this range, according to Childers. Additionally, the VRFB system is supported by remote management software and the ability to track and store performance data.
“As product commercialization matures, Stryten Energys VRFB will be highly scalable to serve kW to MW to meet the needs of commercial and industrial customers to large-scale utilities,” Childers said.
VRFB technology, originally developed with Storion Energy, a US-based startup that Stryten acquired last year, is not yet in use by any solar PV customers, but there is a prototype VRFB system installed at a PV plant of the Colorado test center, known as the Solar Technology Acceleration Center (SolarTAC). It has already delivered 30 MWh of energy over 1,100 cycles, demonstrating that the system is capable of storing solar energy to deploy on demand when needed, according to Childers.
Stryten Energy anticipates the VRFB will be commercially available in January 2025. The company plans a complete U.S. manufacturing and supply chain for all components of the VRFB system, including the vanadium electrolyte. The manufacturing location has not yet been selected. |
