Sparton Resources Inc. (TSXV:SRI) has provided an update on VRB Energy Inc. activities that lays out one of the broadest vanadium redox flow battery project portfolios in the sector, spanning utility-scale storage in China through to off-grid mining applications in the United States.
Ownership and the China channel
Beijing Puneng is 49% owned by VRB Energy and 51% by Shaanxi Red Sun. VRB Energy itself is 90.025% owned by Ivanhoe Electric Inc., while Sparton's 90%-owned subsidiary VanSpar Mining Inc. holds 9.975%. Sparton President A. Lee Barker said the Chinese partner appears to have opened access to China's utility market, where most utilities are state-owned or controlled. Proceeds from the sale of 51% of Beijing Puneng to Shaanxi Red Sun and the formation of VRB China are being repatriated in part to the United States to establish VRB USA Inc., which will focus on markets outside Asia. VRB Energy is leveraging 18 years of research and development experience for commercial applications.
Hubei: 50MW/200MWh commissioned
The flagship reference is the Hubei Province New Energy Storage Pilot Demonstration Project, a 50MW/200MWh all-vanadium installation equipped with 100 units of Beijing Puneng's VRB Pod 500 system. It supports four hours of long-term stable charging and discharging, can smooth peak-valley differences and adjust output fluctuations, and is suited to large-scale main-grid energy storage. It was commissioned in January 2026 and built in less than four months.
Hybrid and distributed commercial cases
At the Xuzhou Cement Plant in Jiangsu Province, the Smart Energy Project uses a hybrid architecture of 9.225MW/18.44MWh lithium iron phosphate batteries plus 0.5MW/2MWh of vanadium flow batteries — balancing system economics against long-term stable operation, and covering integrated photovoltaic, storage and charging plus optimisation and scheduling for industrial green transition. At a glass factory in Zhejiang, an integrated PV-storage-charging project is the first commercial application of Beijing Puneng's new-generation modular VRB Pod250, marking a breakthrough for flow technology in distributed factory-level PV integration.
Vanadium flow's pitch in these deployments is consistent: inherent safety, ultra-long cycle life and stable operation across a wide temperature range.
Microgrids and mining
A campus microgrid in Hami, Xinjiang combines PV, wind, storage and charging, with the flow battery enabling absorption of distributed renewables and all-weather supply for high-altitude, remote microgrids. In Arizona, Ivanhoe Electric's Santa Cruz copper mine hosts an integrated PV-storage-charging project labelled a global benchmark for lowering mining carbon emissions, using flow batteries for safety, stability, high ambient temperature resistance and long-duration storage in fully off-grid mode.
This article was assisted by AI analysis. Please refer to the original source for official information.