Primus Power Corporation stands as a pioneering force in grid-scale electrical energy storage solutions. Since its establishment in 2009, the company has specialized in developing and manufacturing long-duration, fade-free energy storage systems based on zinc bromide flow battery technology. Based in Hayward, California, Primus Power focuses on creating efficient power solutions that enhance grid reliability while supporting the integration of renewable energy sources.
The company’s innovative approach to energy storage has earned recognition across the industry, particularly for its ability to provide consistent performance without degradation over extended periods. Their solutions serve various sectors, including industrial facilities, commercial buildings, renewable energy projects, and utility operations.
Battery Technology
At the core of Primus Power’s offerings is their proprietary zinc bromide flow battery technology, engineered for exceptional durability and performance. Their flagship product, the EnergyPod 2, represents a significant advancement in flow battery systems, delivering five-hour duration capability and certified for a 20-year operational life. This system achieves up to 50% lower total ownership costs compared to traditional lithium-ion alternatives.
The technology incorporates several patented innovations in chemistry, cell design, and system engineering. The zinc bromide chemistry used in their batteries is stable and non-toxic, making it environmentally responsible while maintaining high performance standards. Each EnergyPod contains multiple EnergyCells, which can be scaled to form larger EnergyFarms for increased storage capacity.
What distinguishes Primus Power’s technology is its ability to maintain consistent power output without degradation throughout its operational life, unlike conventional batteries that typically show capacity loss over time. This characteristic makes it particularly valuable for applications requiring frequent charge and discharge cycles, such as grid stabilization and renewable energy integration.
Recent Projects
In 2024, Primus Power collaborated with Microsoft to advance energy storage solutions for data centers globally. This initiative, which includes partnerships with NRG Energy and the University of Texas at San Antonio, aims to develop next-generation energy storage systems for large-scale data center applications.
The company has also expanded its presence in the utility-scale storage market, implementing several projects focused on grid stabilization and renewable energy integration. These implementations demonstrate the scalability and reliability of their zinc bromide flow battery technology in real-world applications.
Investors
Primus Power has attracted substantial investment from prominent organizations, including Chrysalix Energy Venture Capital, Kleiner Perkins Caufield & Byers, and DBL Investors. Additional financial backing comes from strategic investors such as Anglo American Platinum, Rusnano, and Kazyna Capital Management.
The company has secured significant government support through grants from the U.S. Department of Energy, ARPA-E, and the California Energy Commission, reinforcing its position in the energy storage sector.
Business Details
Location: Hayward, California, USA
Website: https://primuspower.com
LinkedIn: https://www.linkedin.com/company/670724
