Acquisition Press Release

ENGIE North America Acquires Donnelly Mechanical Corp.

Date: 08/02/2018

August 2, 2018 – Houston, TX – ENGIE North America Inc. today announced it has acquired Donnelly Mechanical Corporation, a leading mechanical, Heating, Ventilation, and Air Conditioning (HVAC), and energy services contractor headquartered in New York City. The company was founded in 1989 and has more than 200 employees serving customers in a range of industries from healthcare, to data centers, to commercial real estate.


Following two other recent acquisitions of prominent mechanical and electrical service providers in the U.S. – a portfolio of six mechanical service companies from the Talen Energy Group in addition to the Unity International Group – the Donnelly Mechanical acquisition continues to strengthen ENGIE’s capacity to deliver best-in-class mechanical service, maintenance, construction, commissioning, and energy solutions in North America.

ENGIE, the number one provider of energy services in the world, is focused on continued growth across North America, uniting leading-edge mechanical and electrical contracting solutions with its existing portfolio of energy supply, energy optimization, and building modernization offerings to commercial, industrial, and public-sector customers.

“ENGIE North America has taken a strategic approach to integrating outstanding mechanical and electrical companies into our comprehensive energy service model. Donnelly has worked with more than 2,000 customers as a highly reputable, reliable mechanical/HVAC services provider serving numerous sectors across New York City,” said John Mahoney, President and CEO of ENGIE’s Services businesses in North America. “We’re excited to welcome Donnelly and its employees into the ENGIE North America family of companies to continue to strengthen our range of services for customers across the U.S. and Canada.”

Under original company founder and long-time CEO Dan Donnelly, the Donnelly group has been focused on finding a long-term home where the next chapter of the company will be supported and poised for growth both regionally and at a national level. Following the acquisition, newly-appointed Donnelly CEO Joseph DiPrisco, former Chief Financial Officer, shared excitement over the opportunity to build on Donnelly’s legacy of achievement as a new part of ENGIE.

“Donnelly is ready to grow our regional successes within the interconnected network of other successful ENGIE teams to deliver additional components to our typical scope of work – creating a seamless, sustainable energy services model for our valued customers,” said DiPrisco. “The resources that ENGIE can provide as we continue to grow together make this transition a very exciting, positive opportunity for Donnelly.”

About ENGIE in North America Inc.
ENGIE North America manages a range of energy businesses in the United States and Canada, including clean power generation and cogeneration, retail energy sales, and comprehensive services to help customers run their facilities more efficiently and optimize energy and other resource use and expense. Nearly 100 percent of the company’s power generation portfolio is low carbon or renewable. Globally, ENGIE is the largest independent power producer and energy efficiency services provider in the world, with operations in 70 countries employing 150,000 people, including 1,000 researchers in 11 R&D centers. For more information, please visit, @ENGIENorthAm, and

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