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FlexGen, a battery energy storage system integrator based in Durham, North Carolina, has acquired Clean Energy Services, a US-based services company. According to Energy-Storage.News, the deal was announced last Thursday.
Financial details of the transaction were not made public. Clean Energy Services will now function as a subsidiary of FlexGen, maintaining service for its existing customers, who will gain access to FlexGen’s HybridOS platform.
The acquisition combines FlexGen’s software-focused energy management system with the commissioning and lifecycle services teams of Clean Energy Services. The acquired company claims to have the largest BESS commissioning team in the United States and has commissioned more than 15 gigawatt-hours of battery storage projects to date.
Clean Energy Services also provides services for utility-scale solar photovoltaic projects, which offers FlexGen an opportunity to expand its recently launched solar power plant controller offering. The company will continue to operate its remote operations center in Houston, Texas, which manages fleets of more than one gigawatt of solar PV and 4.5 gigawatt-hours of battery storage.
FlexGen stated that this move strengthens its position in commissioning speed and operational asset availability, which are considered key competitive aspects. A company spokesperson said the acquisition enhances its ability to deliver high-performance systems and services with strong field execution, aiming to minimize downtime and maximize long-term performance.
This transaction follows FlexGen’s acquisition of most assets from Powin in the summer of 2025, after that rival entered bankruptcy earlier that year.
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