CMBlu Energy AG and Uniper Kraftwerke GmbH have entered into a decade-long framework agreement for CMBlu’s patented SolidFlow energy storage systems. Under the contract, CMBlu will deliver at least 5 GWh of storage capacity starting in 2027, marking a significant step toward large-scale deployment of the technology.
SolidFlow combines organic redox flow chemistry with solid-state storage materials. The system features non-flammable electrolytes, high cycle stability, and an extended service life. Crucially, it avoids the use of lithium, cobalt, and nickel, reducing dependency on critical raw materials and supporting more sustainable energy storage solutions.
The agreement follows a successful site acceptance test conducted at a joint pilot facility in Germany. The trial validated SolidFlow’s ability to provide grid-related services and demonstrated its potential for multi-hour energy storage. Arne Hauner, director of innovation at Uniper, emphasized that while the technology shows strong promise, further verification of its performance and cost-effectiveness in commercial-scale applications remains essential.
Deliveries to Uniper will be structured in 100 MWh increments, with the initial batches scheduled for 2027. The companies also intend to negotiate long-term service and maintenance agreements to support ongoing operation and optimization of the installations.
Constantin Eis, CEO of CMBlu Energy, highlighted that the long-term contract represents a milestone in scaling up industrial energy storage. “This partnership with Uniper underlines our commitment to delivering reliable, sustainable storage solutions and advancing the commercial viability of flow-based battery technologies,” he said.
By establishing a collaboration that spans supply, testing, and service, both companies aim to accelerate the integration of flexible energy storage into the power grid. The partnership could pave the way for wider adoption of multi-hour storage assets and contribute to the transition toward decarbonized energy systems.
Source: ESS News
