FlexGen Buys CES, Creating an Energy Storage Services Powerhouse

DURHAM, NC – April 02, 2026 – In a significant move set to reshape the energy storage landscape, software and services leader FlexGen Power Systems today announced its acquisition of Clean Energy Services (CES), a top provider of field services for battery and solar assets. The deal creates a vertically integrated powerhouse, combining FlexGen's sophisticated energy management software with CES's extensive on-the-ground operational capabilities, signaling a major consolidation in the rapidly growing clean energy sector.

This acquisition is designed to accelerate the deployment of battery energy storage systems (BESS), enhance long-term asset reliability, and expand the company’s reach into critical markets, most notably the booming data center industry. By uniting advanced analytics with hands-on lifecycle management, the combined entity aims to set a new standard for performance and availability in renewable energy infrastructure.

A Strategic Consolidation for End-to-End Dominance

The transaction represents a strategic shift in the energy storage market, moving beyond siloed offerings toward comprehensive, end-to-end solutions. As the grid modernizes and incorporates more intermittent renewables, the value proposition is no longer just in the hardware or the software alone, but in their seamless integration and lifecycle optimization. FlexGen, known for its hardware-agnostic HybridOS energy management system, gains the immense field service capacity of CES, which boasts the largest BESS technician workforce in the United States.

This merger of "brains" and "brawn" creates a formidable competitor. FlexGen has over 15 years of integration experience and its software currently enables over 25 gigawatt-hours (GWh) of storage systems worldwide. CES, founded in 2022, quickly became a market leader by commissioning more than 15 GWh of battery storage and servicing a portfolio that includes 1 GW of solar and 4.5 GWh of battery assets. The combination of these portfolios and expertise underscores a clear ambition to dominate the service and optimization space.

“Demand for reliable, high-performance power is accelerating, and customers need partners who can deliver at scale,” said Kelcy Pegler, CEO of FlexGen, in the official announcement. “The addition of CES strengthens our service platform and reinforces our leadership in energy storage technology. By pairing best-in-class lifecycle services with HybridOS and Solar PPC, FlexGen is positioned to deploy faster, operate better, and deliver sustained value for our customers.”

Powering the Grid's Most Demanding Customers

A key driver behind this acquisition is the explosive growth of energy-intensive industries, particularly data centers. Fueled by the rise of artificial intelligence and high-performance computing, the data center market's demand for uninterruptible, high-quality power is insatiable. Industry reports project the data center energy storage market to grow exponentially, potentially exceeding $18 billion by the early 2030s. These facilities cannot tolerate even milliseconds of downtime, making robust BESS solutions a mission-critical component rather than an option.

The new, integrated FlexGen is uniquely positioned to address this need. The company has already published research on optimizing BESS for AI data centers, and its HybridOS platform is designed for the complex load-balancing and grid interaction such facilities require. The acquisition adds CES's direct experience in providing power system maintenance and battery services within data center environments. This creates a powerful offering that promises not only sophisticated software control but also the rapid, expert field response necessary to guarantee uptime.

Beyond data centers, the deal has profound implications for broader grid reliability. As utilities and independent power producers integrate more solar and wind power, the need for storage to smooth out intermittency and provide grid-stabilizing services like frequency regulation becomes paramount. The combined entity's focus on maintaining high system availability—building on FlexGen's industry-leading 98% track record—directly supports a more resilient and flexible electric grid capable of handling the complexities of the energy transition.

Beyond the Battery: The Value of Lifecycle Management

This acquisition highlights a crucial, maturing perspective in the clean energy industry: the long-term performance of an asset is as important as its initial installation. Sophisticated software and robust field services are essential for maximizing the return on investment, operational efficiency, and longevity of multi-million-dollar battery and solar projects.

The synergy between FlexGen’s HybridOS platform and CES's field teams exemplifies this trend. FlexGen’s software provides predictive analytics, using AI-driven insights and hardware health monitoring to anticipate potential failures before they cause outages. Recent updates to HybridOS introduced features like augmentation forecasting, which helps asset owners plan for battery degradation and capacity expansion. This predictive capability is now paired with CES's national network of over 125 field technicians and engineers who can perform preventative maintenance, corrective actions, and system commissioning.

“Strong execution in the field is critical to minimizing downtime and maximizing long-term system performance,” noted Ahmad Atwan, CEO of CES. “CES has achieved a market leadership position in battery storage services by focusing on reliable speed of service delivery and optimizing asset performance. FlexGen and CES have been strong partners for years, and this transaction enables us to deliver more robust solutions across a complementary set of customers and markets.” This integration of predictive software with responsive human expertise aims to transform asset management from a reactive to a proactive model.

Integrating Operations for Seamless Service

Under the terms of the deal, Clean Energy Services will operate as a subsidiary of FlexGen, with Ahmad Atwan continuing to lead the division as its CEO. This structure is intended to ensure continuity for existing customers while facilitating a deep integration of capabilities. All current CES clients will continue to receive services without disruption and will now have the opportunity to enhance their operations by leveraging FlexGen's HybridOS platform.

Operationally, the company will maintain a dual Remote Operations Center (ROC) strategy. FlexGen’s ROC in Durham, North Carolina, and CES’s ROC in Houston, Texas, will collaborate to provide 24/7 monitoring, root-cause analysis, and field service dispatch across their combined portfolio. This distributed command structure adds a layer of resilience and depth to their oversight capabilities, covering over 1 GW of solar and a massive 4.5 GWh of battery assets from the Houston center alone.

The acquisition also strengthens FlexGen's relationships with equipment manufacturers. By incorporating CES’s authorized service provider (ASP) capabilities, FlexGen expands its OEM partner program beyond software integration to include certified field service for a wide range of hardware platforms. This positions the company as a more comprehensive partner for developers, utilities, and integrators who need a single point of accountability for the entire lifecycle of their energy storage and hybrid power assets. The move solidifies the company’s ability to deliver on its promise of faster deployment and superior operational performance across the clean energy sector.