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Battery capacity key to renewable integration and load stabilization

Brighton, CO — United Power, Inc. (United Power), an electric cooperative serving Colorado’s northern Front Range, and Ameresco, Inc. (Ameresco), a leading cleantech integrator specializing in energy efficiency and renewable energy, announce the signing of a groundbreaking battery storage contract. Under the 20-year agreement Ameresco will install a multiple site, 78.3 MW/313.34 MWh battery storage project on the cooperative’s electric distribution system.

The innovative project will strategically locate battery arrays throughout the cooperative’s service territory to allow United Power to balance its load while integrating renewable resources. The contract is just one of the many steps the cooperative is taking as it plans for the May 1, 2024 departure from its current wholesale power contract.

“The use of batteries on our distribution network is essential to a resilient and responsive power system, and we are excited to be moving ahead with one of the most aggressive plans for such a system,” stated Mark A. Gabriel, President and CEO of United Power. “These battery arrays will allow us to balance our power needs throughout the day and incorporate local renewables more efficiently.”

Ameresco will provide four 11.75 MW and four 7.84 MW battery arrays, which will be located on eight different substation sites owned by United Power. The batteries, sited in Adams, Broomfield, and Weld counties, will enable the cooperative to store and dispatch power during heavy consumption periods. 

“We are thrilled to partner with United Power on this transformational battery storage project,” said Jon Mancini, Ameresco Senior Vice President of Solar Project Development. “By strategically locating distributed resources and battery storage throughout their service territory, United Power will make strides toward achieving a resilient and responsive power system that integrates clean and renewable power resources for their rate base.”

United Power serves nearly 110,000 meters and maintains and operates over 6,500 miles of distribution line. The 900-square mile service territory wraps around the north and west borders of the Denver International Airport. It includes the north and northeast metropolitan development corridors along Interstate 25, Interstate 76, State Highway 85, and E-470 and the Golden Gate and Coal Creek canyons, two of Colorado’s most iconic and historic mountain canyons. As a result of its geographic location, United Power’s system is experiencing significant demand and energy growth, averaging approximately 6% annually.

To learn more about United Power’s power supply transition, visit Power Supply

About United Power

United Power is a member-owned, not-for-profit electric cooperative, delivering electricity to homes, farms, and businesses throughout Colorado’s northern Front Range. The cooperative is one of the fastest-growing electric co-ops in the nation, and in June 2021 joined the elite ranks of cooperatives serving more than 100,000 meters. The 900-square mile service territory extends from the mountains of Coal Creek and Golden Gate Canyon, along the I-25 corridor and Carbon Valley region, to the farmlands of Brighton, Hudson, and Keenesburg. United Power is also a founding member of the NextGen Cooperative Alliance, which is dedicated to expanding the power supply and procurement options available to distribution co-ops and reforming the traditional generation and transmission business model. For more information about United Power, visit or follow the cooperative on Facebook, Twitter, LinkedIn, YouTube, and Instagram.

About Ameresco

Founded in 2000, Ameresco, Inc. (NYSE:AMRC) is a leading cleantech integrator and renewable energy asset developer, owner and operator. Our comprehensive portfolio includes energy efficiency, infrastructure upgrades, asset sustainability and renewable energy solutions delivered to clients throughout North America and Europe. Ameresco’s sustainability services in support of clients’ pursuit of Net Zero include upgrades to a facility’s energy infrastructure and the development, construction, and operation of distributed energy resources. Ameresco has successfully completed energy saving, environmentally responsible projects with Federal, state and local governments, healthcare and educational institutions, housing authorities, and commercial and industrial customers. With its corporate headquarters in Framingham, MA, Ameresco has more than 1,300 employees providing local expertise in the United States, Canada, and Europe. For more information, visit