Carmine Marcello Appointed President & CEO of Markham District Energy

MARKHAM, ON – December 2, 2025 – The Board of Directors of Markham District Energy (MDE) is pleased to announce the appointment of Carmine Marcello as President and CEO, marking a leadership transition as the company prepares for its next phase of growth and innovation.

Mr. Marcello brings extensive experience in the energy sector, including his tenure as President and CEO of Hydro One, where he led Ontario’s largest electricity utility through significant regulatory and financial transformation in preparation for its successful initial public offering. He has advised governments and clean energy developers globally on structuring joint ventures, attracting investment, and building business models aligned with net-zero objectives. Mr. Marcello currently serves on the Board of Nova Scotia’s Independent Energy System Operator, contributing to the province’s clean energy transition.

“For almost 30 years, Markham District Energy has been an industry leader in developing the fastest growing district energy utility in Canada, providing heating and cooling to Markham Centre and the Markham-Stouffville Hospital district,” said Markham Mayor Frank Scarpitti. “Markham District Energy reflects the City’s strong commitment to innovation and sustainability, and I am confident that Carmine Marcello has the experience and foresight to lead this award-winning organization into its next chapter. I would also like to thank former President and CEO Bruce Ander for his dedication to organizational excellence and his many years of strong leadership.”

“Carm Marcello’s strategic insight, governance expertise, and deep sector knowledge will be invaluable as MDE continues to expand its leadership in sustainable district energy,” said Keith Irish, Chair of the Board. “His appointment reinforces our commitment to advancing low-carbon energy infrastructure and supporting the City of Markham’s long-term environmental and economic goals.”

After more than two decades of dedicated service, Bruce Ander will be stepping down as President and Chief Executive Officer. During his 20-plus year tenure, Mr. Ander has helped transform MDE into a nationally recognized leader in sustainable energy solutions. Under his leadership, the company strengthened its partnerships across the sector, advanced innovative low-carbon initiatives, and played a central role in supporting the City of Markham’s environmental and economic objectives. His vision, commitment, and leadership have shaped the organization’s success and positioned MDE as a model for sustainable urban energy systems. Mr. Ander will assume an advisory role providing guidance and support to Mr. Marcello during a transition period.

Currently, Markham District Energy is building the world’s largest Wastewater-to-Energy Transfer (WET) Project at its Low Carbon Energy Centre in Markham Centre. Using HUBER ThermWin technology, it recovers heat from wastewater to provide up to 18 MW of heating and 3,600 tons of cooling. The project is expected to reduce greenhouse gas emissions by about 30,000 tonnes per year, helping MDE move toward net-zero.

MDE continues to expand its low-carbon district energy network, connecting more homes, businesses, and institutions in Markham Centre, aiming to cut over 33,700 tonnes of GHG emissions annually. Today, MDE supplies heating and cooling energy to more than 15.4 million square feet across 230 buildings in Markham. In 2013, Markham District Energy received the International District Energy Association’s System of the Year Award, the highest honour the association can confer on a district energy system.

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Markham Mayor Frank Scarpitti's Office:
At mayorscarpitti@markham.ca.

All other media inquiries / interview requests for the City of Markham:  
media@markham.ca. 

Media inquiries / interview requests for Markham District Energy:
kirish@markham.ca 

About Markham District Energy: Established in 1999, Markham District Energy (MDE) is a municipally owned thermal energy utility, known for its innovative and sustainable approach to district energy. Operating two underground thermal grids and multiple energy centres, MDE provides reliable heating, cooling, and electricity to a growing network of residential, commercial, and institutional buildings. The company is a recognized leader in low-carbon infrastructure, and it is actively investing in projects like the world’s largest wastewater energy-transfer system to reduce greenhouse gas emissions and strengthen the city’s resilience. With over 99.999% reliability and a commitment to environmental performance, MDE plays a key role in advancing the City of Markham’s clean energy and urban development goals.

About Markham: Markham, an award-winning municipality with over 370,000 residents and the largest of nine communities in York Region, is home to over 650 corporate head offices and more than 1,500 high tech and life science companies. Markham is a leader in attracting foreign direct investment with more than 234 foreign companies located in the City. Founded in the 1790s, today Markham is Canada’s most diverse community and enjoys a rich heritage, outstanding community planning and services, and a vibrant local economy.

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