RedoxBlox

RedoxBlox is an energy storage company that develops innovative thermochemical energy storage (TCES) technology to decarbonize industrial heat and provide grid-scale energy storage. The company's storage module consists of a vessel filled with a proprietary, low-cost metal oxide material. During the charging process, renewable electricity heats the metal oxide pellets to temperatures between 1000-1500°C, triggering a chemical reaction that releases oxygen and stores heat as chemical energy. When energy is needed, air is directed through the module, reversing the reaction and releasing heat. This heated air can then be used for industrial processes or to generate electricity through a gas turbine.

The RedoxBlox system has energy densities comparable to lithium-ion batteries but at a lower cost. It can reach maximum charge within four hours and is designed to be non-toxic, non-flammable, and fully recyclable. The technology aims to enable the electrification of heat-intensive industries that are difficult to decarbonize, such as cement, steel, food and beverage, refining, and chemicals manufacturing. Additionally, it facilitates the integration of more renewable energy sources like solar and wind into the electrical grid through cost-effective energy storage.

RedoxBlox's technology is positioned to serve as a zero-carbon replacement for natural gas in industrial applications and power generation. The company claims its solution can be integrated with existing natural gas-powered industrial infrastructure, potentially reducing capital expenditure for deployment. As of January 2024, RedoxBlox was focusing on scaling up its technology to commercially relevant sizes.

Key customers and partnerships

RedoxBlox has formed partnerships with several organizations to demonstrate and commercialize its technology. In January 2024, the company partnered with the University of California, San Diego (UCSD) and the Electric Power Research Institute (EPRI) for a project funded by the California Energy Commission. This initiative aims to leverage RedoxBlox's technology to power a turbogenerator, providing up to 24 hours of energy storage capacity.

Another significant partnership involves collaboration with Dow and EPRI for an industrial-scale TCES project at Dow's West Virginia plant. This project, supported by the US Department of Energy's Industrial Efficiency and Decarbonization Office, aims to showcase the decarbonization of industrial steam through electrification using long-duration TCES.

RedoxBlox has established partnerships with numerous US companies across various industries, including electrical utilities, industrial operations, engineering firms, independent research groups, universities, and contract manufacturers. Some notable partners include Southern California Edison, Siemens Energy, Vernova (formerly part of General Electric), and Ansaldo Green Tech for the supply of gas turbine generators.