Modernize Your Infrastructure with Guaranteed Savings

Partnering with public institutions to build safer, healthier, and more resilient communities through efficient facilities and infrastructure.

WHO WE ARE

Our team of trusted experts has been committed to delivering innovative, cost-effective, and efficient infrastructure solutions to the public sector for over 50 years.

Serving the Public Sector

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    Education

    K–12, Community Colleges, Universities

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    Local Government

    Cities, Counties, States

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    Federal Government

    Department of Defense, General Services Administration, Veterans Administration

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    Special Districts

    Wastewater Treatment, Transportation, Ports

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    Healthcare

    Hospitals, Research, University Medical Centers

Your Partner for Comprehensive Energy Solutions

Find the right solution for you

  • Operational Efficiency

    Heating & Cooling, Lighting, Control Systems, Low Flow Fixtures

  • Facilities and Infrastructure Modernization

    Electrical Infrastructure, Civil, Security, Automation, Controls

  • Resiliency

    Battery Storage, Back-up Generation, Microgrids

  • Onsite Energy Generation

    Solar, Combined Heat & Power, Geothermal, Biogas

  • Electric Vehicle Infrastructure

    Fleet, Car and Bus Charging Stations, Renewable Power

  • Water Districts, Management, and Wastewater Treatment

    Biogas, Process Improvements, Industrial Pumping, Metering

Home Integrated Services

Decades of Experience & Thousands of Successful Projects

From planning through long-term operations, our local teams deliver the same trusted, customer-first approach, now backed by expanded expertise and resources.

  • 750+Professionals

  • 50+ Yearsof Combined Experience

  • 19,000Facilities Served

  • $8B+Customer Savings

  • 880 MW+Distributed Generation Installed

Greater Scale. Greater Capability.

A Stronger National Partner

OPTERRA is one of North America’s longest-operating energy services companies, helping public sector organizations modernize infrastructure, improve operational performance, and strengthen communities.

With the addition of NORESCO, we are building on that legacy with expanded geographic reach, specialized technical expertise, and enhanced project delivery capabilities to help customers solve increasingly complex energy, water, resiliency, and infrastructure challenges across North America.

View the Press Release
Map of the USA showing the combined states where OPTERRA and NORESCO operate and have offices.

Customer Testimonials

Milpitas icon
Through this program, we will leverage guaranteed energy and water savings to pay for the program and save the city money, while reducing our energy and water usage, improving community safety, and enhancing building comfort and usability.
Rich Tran , Former Mayor
City of Milpitas
View case study : Former Mayor City of Milpitas
Washington DC icon
With this project, we’re doing so much more than just replacing lights — we’re making our streets safer, our communities more connected, and our city more resilient.
Muriel Bowser , Mayor
Washington D.C.
View case study : Mayor Washington D.C.
West County Wastewater Groundbreaking

3 Dimensions of Impact

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    Savings

    Modernizing facilities to improve efficiency and operational performance and minimize risk.

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    Energy

    Ensuring energy independence and resiliency to support communities during emergencies and natural disasters.

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    Community

    Enhancing community by creating local jobs, fostering civic engagement, and providing relevant education and training opportunities.

Contact Us