FlexGen strengthens industry leadership through Clean Energy Services (CES) acquisition

The acquisition marks a major step forward in FlexGen’s mission to deliver faster deployments, stronger system performance, and expanded solutions across energy infrastructure.

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Get in touch with our experts to learn how the new integrated model accelerates project delivery, enhances system performance, and strengthens long-term reliability for your solar and battery energy storage assets.

Our services

Hands on service you can count on

Offering a comprehensive selection of services to support long‑term performance throughout the life of an asset, maximizing uptime and value.

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Full-stack OEM support

CES’s authorized service provider relationships enhances FlexGen’s existing OEM partner program and expands support for systems in the field. FlexGen offers a software-focused OEM partner program.  CES is the approved service provider (ASP) for many OEMs.  Together, FlexGen and CES provide a full-stack value offering for OEMs.

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Remote operations centers

FlexGen now operates two 24/7 remote operations centers in Durham, NC and Houston, TX to ensure industry leading availability for its customers. ROC operators work with real assets, 24/7, across a wide range of operating conditions, including CES’s ability to operate as a NERC GOP on behalf of customers.

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BESS service

From commissioning and spare parts coordination to preventative maintenance and augmentation management, this acquisition creates the full spectrum of support that utility-scale battery energy storage systems need.

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Solar service

CES solar servicing expertise brings solar assets online faster and enhances FlexGen HybridOS Solar PPC by enabling more comprehensive support for solar and hybrid systems. The team supports grid-tied systems with commissioning, maintenance, repowering, and corrective campaigns focused on long-term solar asset management.

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Flexgen Lifecycle Services

FlexGen's expert teams proactively monitor your assets 24/7, optimize your system operations, and ensure long-term reliability of your assets.

CES Battery and Solar Services

CES supports the complete lifecycle of renewable infrastructure, combining technical field execution with data‑driven energy asset optimization.

FAQs

Frequently Asked Questions

Q: What did FlexGen acquire? 

A: FlexGen has acquired Clean Energy Services (CES), a leading provider of commissioning and lifecycle services for battery energy storage systems and utility-scale solar. This strengthens our ability to deliver projects faster, improve system availability, and expands our capabilities across both storage and solar. 

Q: How will CES operate within FlexGen? 

A: CES will operate as Clean Energy Services, a FlexGen company, under Ahmad Atwan’s leadership. FlexGen continues operating as it does today, with a focus on speed to power, availability, and predicting and executing moments of augmentation.

Q: What does this mean for the respective remote operations centers? 

A: CES’s Houston-based Remote Operations Center adds depth and resilience to FlexGen’s existing ROC in Durham, NC as well as the ability to provide NERC GOP services on behalf of owners. Together, this strengthens our ability to monitor, diagnose, and respond across a growing fleet.

Q: What is CES’s solar experience? 
A: CES services over 1GW of solar sites and over 4.5GWh of battery sites and has commissioned over 15 GWh of battery sites, making it the industry leader in battery storage commissioning and services.

Q: Why did FlexGen acquire CES? 
A: Demand for energy storage and solar is accelerating, driven by rising electricity consumption, grid constraints, and data center power needs. Customers need: 

  • Faster deployment
  • Higher system availability
  • More complete solutions across battery and solar 

 CES adds field execution, service depth, and solar expertise to complement FlexGen’s full scope of system supply, pre-integration, HybridOS platform, lifecycle services, and technology-enhanced augmentation. 

Q: What is NERC GOP?

A: Generator Operator (GOP): The entity that: 1) operates generating Facility(ies) and performs the functions of supplying energy and Interconnected Operations Services (Category 1 GOP); or 2) operates non-BES Inverter-Based Resources(s) that either have or contribute to an aggregate nameplate capacity of greater than or equal to 20 MVA, connected through a system designed primarily for delivering such capacity to a common point of connection at a voltage greater than or equal to 60 kV (Category 2 GOP). 

See NERC for more: https://www.nerc.com/globalassets/standards/projects/2024-01/2024-01-go-gop-definitions_clean---final-ballot_070225.pdf

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