Ameresco

Ameresco, Inc. is an energy efficiency solutions provider operating primarily in North America and Europe. Founded in 2000 and headquartered in Framingham, Massachusetts, the company specializes in the development, design, engineering, and installation of projects that aim to reduce energy consumption and operational costs for various sectors, including governmental, educational, utility, healthcare, commercial, and industrial facilities. Ameresco's services encompass upgrades to energy infrastructure and the construction of renewable energy plants that generate electricity, gas, heat, or cooling from sustainable sources. Additionally, the company offers a range of solar energy products and systems, including photovoltaic panels, inverters, solar-powered lighting, and other essential components for both grid-connected and off-grid applications. Through its initiatives, Ameresco supports clients in achieving greater energy efficiency and sustainability.

Nicole Bulgarino

Executive Vice President

9 past transactions

ASA Controls

Acquisition in 2025
ASA Controls is a contractor that offers DDC system design, installation, start-up, and servicing to educational, commercial, healthcare, and industrial customers.

Enerqos

Acquisition in 2023
Enerqos S.p.A. is an Italian company specializing in energy efficiency solutions and the development of photovoltaic plants. Established in 2006 and headquartered in Milan, the company offers a wide range of services, including the design and installation of lighting solutions, gas and biomass boilers, cogeneration systems, refrigeration systems, electric motors, inverters, and heat pumps. Enerqos also designs anaerobic digestion systems and industrial roofs, and it manages solar farms. In addition, the company provides operation and maintenance services, which encompass energy consumption data analysis, feasibility studies, project implementation, and energy solution monitoring. Enerqos serves various sectors, including agriculture, banking, healthcare, hospitality, logistics, and education. The company has a significant presence in Italy and operates in Greece, France, Israel, San Francisco, and Shanghai, having installed nearly 100MW of solar capacity and providing maintenance services for over 110MW of solar PV installations.

Plug Smart

Acquisition in 2021
Plug Smart is a company that specializes in energy solutions aimed at enhancing building efficiency and security. It focuses on the development and implementation of capital improvement projects that are budget-neutral, delivering smart building solutions, building automation, and engineering services. In addition, Plug Smart offers design-build services and professional consulting aimed at various sectors, including government, education, healthcare, and commercial markets. The company’s customer-centric approach helps clients achieve significant reductions in energy and overhead costs by improving the energy efficiency of their facilities. With a range of services that also include security and safety solutions, Plug Smart is dedicated to providing comprehensive energy management strategies.

Maximum Solar

Acquisition in 2019
Maximum Solar, LLC, founded in 2013 and based in Acton, Massachusetts, specializes in providing operations and maintenance (O&M) services for commercial-scale photovoltaic solar facilities. As a subsidiary of Ameresco, Inc., the company manages over 150 megawatts of solar facilities across the northeastern United States. Its diverse clientele includes large utilities and smaller system owners. Maximum Solar offers a comprehensive range of services that include complete O&M contracts, remote monitoring, facility reporting, electrical testing, inspections, troubleshooting and repair, shading analysis, and thermal imaging. Additionally, the company conducts preventative maintenance and site maintenance, which encompasses tasks such as mowing, shade mitigation, road grading, erosion control, and snow removal. These services are designed to optimize the performance and longevity of solar installations, ultimately maximizing returns for clients.

TerraNavigator

Acquisition in 2018
TerraNavigator is a privately funded brownfield and surplus property developer focused on solutions anchored by renewable and clean energy solutions. Our solutions are tailored to directly address property owner, potentially responsible party (PRP), and community requirements. Our collaborative and iterative approach can result in a multi-phase development project that will encompass more than improvement.

Chelsea Group

Acquisition in 2018
Chelsea Group Ltd. is a consulting firm based in Hawaii that specializes in building science and design engineering. The company focuses on preserving and enhancing the mechanical infrastructure of various types of facilities, including commercial, institutional, retail, and industrial buildings. Through its expertise, Chelsea Group provides tailored consulting services aimed at improving the efficiency and functionality of existing structures.

The Energy Services Partnership

Acquisition in 2013
Energy Services Partnership is a consultancy focused on energy and environmental management. The company offers a range of services aimed at helping commercial, industrial, manufacturing, and utility customers optimize their energy usage. Its offerings include energy supply management, invoice management, and demand response services, which assist clients in reducing energy costs and improving operational efficiency. By providing tailored solutions, Energy Services Partnership supports organizations in navigating the complexities of energy management and achieving sustainable practices.

APS Energy Services

Acquisition in 2011
APS Energy Services Company, Inc. (APS Energy Services) is the full-service energy performance contracting subsidiary of Pinnacle West Capital Corporation (NYSE: PNW)and provides self-funding innovative energy conservation and renewable solutions designed to manage risk and achieve the triple bottom line. Incorporated in 1998 and as part of the Pinnacle West family, APS Energy Services enjoys a strong relationship with the State of Arizona and has successfully implemented energy conservation and renewable energy projects for State public agencies, including K-12 School Districts, Municipalities and Higher Education Institutions.

Applied Energy Group

Acquisition in 2011
Applied Energy Group is a consulting firm specializing in the energy sector, offering a range of services to electric and gas utilities, government entities, and grid operators globally. The firm focuses on energy management, providing market potential assessments, program design, implementation, and evaluation. Their expertise extends to energy efficiency portfolios and demand response initiatives, supporting clients in navigating the complexities of energy transformation. Additionally, Applied Energy Group delivers regulatory support and technical consulting, equipping businesses with tailored technology solutions and decision-making assistance to meet evolving energy needs.
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