2026-06-17
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HUIZHOU, China, June 17, 2026 – Desay ESS and German Greencells Group have officially entered into a strategic alliance to deliver turnkey utility-scale battery energy storage projects across Europe through a single supply chain.
Under the cooperation arrangement, Desay ESS will provide liquid-cooled battery systems that fully integrate proprietary cell production, power electronics, and energy management software. Meanwhile, Greencells will contribute its expertise in in-house construction and engineering, procurement and construction (EPC), with both parties jointly targeting standalone large-scale storage and solar co-located projects. Through this model, project owners will have a single point of contact from initial planning all the way through to ongoing operations and maintenance.
Desay ESS's systems incorporate what the company calls its "Active Safety AI cell technology," which monitors temperature and pressure inside individual cells in real time, enabling precise identification of potential safety risks at an early stage.
Jack Guo, Senior Vice President and General Manager of Desay ESS, said: "This cooperation marks the beginning of a long-term strategic relationship. We are committed to closely integrating Desay ESS's vertically integrated manufacturing capabilities with Greencells' deep EPC experience and European market presence."
Fabian Herr, CEO of Greencells Group, added: "With this strategic alliance, we are creating a powerful combination for the European storage market. Combining Desay ESS's proprietary cell manufacturing, industrial production capacity and proven technology, we can now offer our clients turnkey BESS solutions in the large-scale storage segment, with the highest quality standards and a secured supply chain."
Desay ESS is a subsidiary of Desay Battery and is recognized by BloombergNEF (BNEF) as a Tier 1 energy storage manufacturer. Its partner, Greencells, is headquartered in Saarbrücken, Germany. Founded in 2009, the company has installed more than 4.1 GW of capacity worldwide and employs over 400 people.
Under the cooperation arrangement, Desay ESS will provide liquid-cooled battery systems that fully integrate proprietary cell production, power electronics, and energy management software. Meanwhile, Greencells will contribute its expertise in in-house construction and engineering, procurement and construction (EPC), with both parties jointly targeting standalone large-scale storage and solar co-located projects. Through this model, project owners will have a single point of contact from initial planning all the way through to ongoing operations and maintenance.
Desay ESS's systems incorporate what the company calls its "Active Safety AI cell technology," which monitors temperature and pressure inside individual cells in real time, enabling precise identification of potential safety risks at an early stage.
Jack Guo, Senior Vice President and General Manager of Desay ESS, said: "This cooperation marks the beginning of a long-term strategic relationship. We are committed to closely integrating Desay ESS's vertically integrated manufacturing capabilities with Greencells' deep EPC experience and European market presence."
Fabian Herr, CEO of Greencells Group, added: "With this strategic alliance, we are creating a powerful combination for the European storage market. Combining Desay ESS's proprietary cell manufacturing, industrial production capacity and proven technology, we can now offer our clients turnkey BESS solutions in the large-scale storage segment, with the highest quality standards and a secured supply chain."
Desay ESS is a subsidiary of Desay Battery and is recognized by BloombergNEF (BNEF) as a Tier 1 energy storage manufacturer. Its partner, Greencells, is headquartered in Saarbrücken, Germany. Founded in 2009, the company has installed more than 4.1 GW of capacity worldwide and employs over 400 people.
