Roof Mount Solar Power Systems

Rooftop solar power system

A roof mounted solar power system in Fall River, Massachusetts, developed by Ameresco.

Roof mount solar power systems are a popular choice for municipal governments, commercial and industrial facilities, school systems and universities. Building rooftops are an often overlooked space with enough room for large solar arrays.

Depending on the available roof area and your usage profile, you may be able to generate 100% of the energy you need through solar power. In some locations, excess power can be sold back to the electrical grid, potentially turning rooftops into revenue.

Ameresco offers Solar PPA financing and complete design, build own and maintain services, allowing building owners to go solar without up-front investments or additional expenses. Rooftop solar systems can be mounted using ballasts, which do not disturb the roof surface, or traditional rooftop mounting systems.


• A low-cost, proven and common way to tap solar power

Choice of installation options, including no-penetration ballasted mounts

Revenue generation from under-used roof areas

St. Louis Airport renewable energy video

Building a Renewable Airport

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Solar Panels + LED Lighting = Near-Zero Energy Consumption

Airport Improvement magazine looks at how solar panels and LED lighting combine to provide near-zero energy consumption at Minneapolis-St. Paul International Airport's parking facilities.

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Picture of solar panels installed on the rooftop of Melrose Veterans Memorial Middle School

City of Melrose

Ameresco developed several plans to add solar power to school roofs. The final project was chosen to deliver the lowest solar PPA price to the City of Melrose.

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Arizona State University stadium with solar panels

Arizona State University

ASU made extensive use of rooftop solar panels on its stadium, arena and campus buildings to help achieve $8 million in annual energy savings.

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Akron Municipal Housing Authority Rooftop Solar Array

Public Housing

See how Ameresco is helping public housing authorities meet sustainability and efficiency goals throughout the United States.

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The city of Minneapolis on the horizon as seen from the solar array on top of Minneapolis St. Paul International Airport

Minneapolis-St. Paul Airport

It's Minnesota's largest solar energy project to date, and further efficiency will be gained with lighting enhancements.

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Why Choose Ameresco?

Our solar PV team has an advanced understanding of regulations and is involved with ongoing rulemaking at the local, utility, state and federal levels. We have acted on behalf of our customers to secure all permits and incentives to keep projects on schedule and at the agreed upon price. Our engineers and construction teams have designed and/or built more than 50 megawatts of solar PV projects.

Ameresco has the in-house technology, staff, and systems to continuously monitor solar PV operations, report alarms and problems, and dispatch maintenance staff using our work order management system. We also test and re-commission each site once a year. This O&M experience provides feedback to our design engineers, creating a virtuous cycle for continuous design improvements.

Ameresco offers a full spectrum of services from system conceptualization to support once the system is complete. We can develop, engineer, build, own, operate, finance and maintain (with in-house or outside staff), providing a complete solution. We can operate and maintain any existing solar power system or provide financing through a Solar PPA or ESPC for new construction.

Ready to learn more? Call us at 1-866-263-7372 or contact us online.