CMBlu Energy to supply Uniper with 5 GWh of SolidFlow battery storage technology

The ten-year agreement sees CMBlu Energy supply its SolidFlow battery technology to the German energy company from 2027. Uniper intends to deploy the battery systems in tranches of at least 100 MWh.
CMBlu and Uniper sign a ten-year long-duration energy storage supply deal. | Photo: CMBlu Energy AG

CMBlu Energy AG and Uniper Kraftwerke GmbH have signed a framework agreement for a patented storage technology combining flow batteries with solid-state storage materials.

The deal will see CMBlu supply at least 5 GWh of its SolidFlow energy storage technology, with first deliveries expected from 2027.

CMBlu’s SolidFlow battery storage systems are based on a combination of organic redox flow technology and solid-state storage materials. They offer high cycle stability, a long service life, non-flammable electrolytes, and do not require critical raw materials such as lithium, cobalt, or nickel.

The ten-year agreement follows a successful site acceptance test for SolidFlow at a joint pilot project run by the two companies in Germany. The test demonstrated the technology’s suitability for grid services and its potential for future large-scale deployment capable of multi-hour energy storage.

Arne Hauner, director of innovation at Uniper, described the site acceptance test as an important intermediate step in the collaboration with CMBlu.

“SolidFlow technology shows promising potential, but its performance and economic efficiency still need to be further confirmed in large-scale use,” said Hauner.

First deliveries under the agreement are expected from 2027 and Uniper is expected to deploy the energy storage in 100 MWh tranches. The two companies also plan to conclude long-term service and maintenance agreements in addition to the supply contracts.

CMBlu Energy CEO Constantin Eis said the long-term agreement with Uniper represents an important milestone in the industrial scaling of energy storage technology.

From pv magazine Deutschland

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