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 and General Manager

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 is a provider of operations and maintenance services for commercial-scale photovoltaic solar facilities. Founded in 2013 and based in Acton, Massachusetts, the company is a subsidiary of Ameresco, Inc. Maximum Solar manages over 150 megawatts of solar facilities primarily in the northeastern United States, catering to a diverse clientele that includes large utilities and owners of smaller systems. The company offers a comprehensive suite of services, including complete operations and maintenance contracts, remote monitoring, facility reporting, electrical testing, inspections, troubleshooting and repair, shading analysis, and thermal imaging. Additionally, Maximum Solar provides site maintenance services, which encompass mowing, trimming, erosion control, snow removal, and other essential tasks to ensure optimal performance of solar installations.

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 offices, institutions, retail spaces, and industrial sites.

The Energy Services Partnership

Acquisition in 2013
The Energy Services Partnership is a consultancy specializing in energy management and environmental management. The company offers a range of services, including energy supply, invoice management, and demand response solutions, tailored for commercial, industrial, manufacturing, and utility clients. By focusing on optimizing energy usage and enhancing sustainability, the Energy Services Partnership aims to help organizations improve their operational efficiency and reduce costs associated with energy consumption.

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 energy management services for utilities, governments, and grid operators globally. Their expert team offers comprehensive solutions including market assessments, program design and implementation, evaluation services, and clean energy transformation strategies. They also provide regulatory support and technical consulting tailored to clients' evolving needs.
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