Ameresco Develops On-site Solar for Orange Unified School District

Ameresco developed the rooftop and carport canopy solar PV systems for Orange Unified School District, located at four elementary, one middle, and two high school campuses. As part of the power purchase agreement contract, Ameresco will own and maintain the solar systems, and OUSD will purchase the power generated by each system at a fixed rate for the next 25 years. This fixed rate allows OUSD to lock in energy savings, insulating them from any fluctuations in energy pricing and guaranteeing savings. This initiative comprises seven solar projects, five of which are already complete. The remaining two high schools are scheduled to be energized by the end of 2025.

“Our strong and long-term partnership with Ameresco is helping us to decrease energy costs and work toward our goal to optimize efficiency across the district,” said Isela Vazquez, Sr. Executive Director, Facilities Development & Planning at Orange Unified School District. “By investing in resilient energy technology, we’re investing in our district’s energy independence and ensuring our ability to provide the best possible education to every single of our students.”

OUSD serves approximately 25,000 students from preschool to grade 12 from Orange County, California in the cities of Orange, Villa Park, Anaheim, Garden Grove, Santa Ana, and unincorporated county areas. The solar project is a part of the ongoing efforts of the district to enhance efficiencies district-wide through a focus on sustainability and reduced fuel consumption, among other measures. This project will enhance OUSD’s efforts in this area significantly by driving energy savings through increasing reliance on renewable energy generated by on-site solar systems.

“These initiatives highlight how schools can strengthen their energy resilience while reducing costs,” said Lou Maltezos, President of Central & Western USA, Canada Regions at Ameresco. “We’re proud to see our long-standing partnership with the district delivering meaningful results and look forward to building on this success together.”

To learn more about the solar solutions offered by Ameresco, visit www.ameresco.com/solution-solar-power/

About Ameresco, Inc.

Founded in 2000, Ameresco, Inc. (NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the global energy transition. Our comprehensive portfolio includes implementing smart energy efficiency solutions, upgrading aging infrastructure, and developing, constructing, and operating distributed energy resources. As a trusted full-service partner, Ameresco shows the way by reducing energy use and delivering energy infrastructure solutions to Federal, state and local governments, utilities, data centers, educational and healthcare institutions, housing authorities, and commercial and industrial customers. Headquartered in Framingham, MA, Ameresco has more than 1,500 employees providing local expertise in North America and Europe. For more information, visit www.ameresco.com.

The announcement of the completion or development of a renewable energy asset by Ameresco is not necessarily indicative of the timing or amount of revenue from such assets, of Ameresco’s overall revenue for any particular period or of trends in Ameresco’s overall total assets in development or operation. This project was included in Ameresco’s previously reported assets in development as of September 30, 2025.