Mayor’s Megawatt Challenge

Mayors' Megawatt Challenge banner

Since 2003, the Mayors’ Megawatt Challenge program has been bringing together leading municipalities to achieve exceptional levels of energy and environmental performance in municipal facilities.  The program is a membership based program that uses a unique and effective data driven approach to energy conservation.  We are very proud of our members. They have achieved significant year over year energy savings of more than 525 thousand giga-joules since the start of the program. Congratulations!

But that’s not all. Based on the analysis of energy data submitted to the Ministry of Energy in compliance with the Green Energy Act regulations, the town and city halls of our member municipalities use 24% less energy per square foot than non-member town and city halls! As always they lead by example!

The Mayors’ Megawatt Challenge holds webinars, workshops, and an annual forum to help bring municipalities , government, and industry experts together to share best practices and knowledge in operations and maintenance, share successes in energy retrofit projects, and recognize high performing municipal buildings.

Not a member? Sign up now by filling in and submitting the form below

Mayors’ Megawatt Challenge Registration Form

Please contact Jason Choy at for any membership inquiries

Program Savings Since 2003

  • Energy: 525,013 GJ
  • GHG emissions : 21,992 tonnes,
  • Water: 565,978 m3
  • Cost: $9,577,178

Member Municipalities:

  • Barrie (City of)
  • Brampton (City of)
  • Caledon (Town of)
  • Guelph (City of)
  • Markham (City of)
  • Mississauga (City of)
  • Oshawa (City of)
  • Peel (Region of)
  • Richmond Hill (Town of)
  • Toronto (City of)

There are 117 buildings enrolled with a total area of 855,731 m2.

Program Documents

Upcoming Events

Mayors’ Megawatt Challenge Awards

Recognition is an integral part of the Mayor’s Megawatt Challenge as our member municipalities have accomplished significant savings in energy and greenhouse gas emissions since the  program’s inception.

This year we are also awarding The Living City Energy Efficiency Leadership Award. This award recognizes leadership in achieving their energy targets and thus reducing their conservation potential to 5% or less. The Gold Award will go to municipal buildings that meet their target. The Silver Award goes to municipal buildings that get to within 5% of their target.

The Gold award presented to the City of Mississauga for their Civic Centre and the Town of Richmond Hill for their Town Hall at the Sustainability Forum on November 22, 2017. Congratulations!

City of Mississauga
Town of Richmond Hill

Mayors’ Megawatt Challenge Annual Forum 2017
Examining municipal Energy Conservation and Demand Management (ECDM) Plans

The Forum is our annual signature event, bringing together municipalities, government, utility companies, associations and industry experts to drive forward the energy and environmental performance of municipal facilities.

This year’s forum provides a mid-term review of Ontario’s Energy Conservation and Demand Management (ECDM) plans, examining content and progress of existing municipal plans, and setting the stage for the 2019 reporting on savings achieved and updating of plans to incorporate new knowledge and targets. We will be revisiting the Town Hall Challenge, in which a growing number of municipalities are meeting and surpassing this new standard of excellence in Town and City Hall energy efficiency. We will present case studies of some of the most energy efficient facilities, as well as those making the biggest savings, and profile the products and services involved in their success. And we will report on continued progress with high performance community centres, sharing best practices used to achieve excellent energy efficiency.

Where appropriate, exhibitors will be invited to participate on one of our technical panels, focusing on case studies of high performing facilities and those that have greatly improved performance.  If you have worked with a community centre or a Town or City Hall and would like to co-present a case study, please let us know!

MMC Forum Flyer 2017

MMC Forum 2017 Exhibitor Registration


MMC Forum 2017 Morning Presentation #1

MMC Forum 2017 Morning Presentation #2

MMC Forum 2017 Afternoon Presentation #3

MMC Forum 2017 Afternoon Presentation #4


Bernie McIntyre, B.Sc., MSc.
Senior Manager, Community Transformation
416.661.6600 ext. 5326
416.402.5232 (cell)


Technical Direction

Enerlife Consulting

Program Management

Toronto and Region Conservation Authority (TRCA)