Mayors' Megawatt Challenge
Founded in 2003,the Mayors’ Megawatt Challenge brings together municipalities of every size from across North America to lower energy use,emissions, and operating costs in their own facilities, while demonstrating leadership in climate change action within their communities. Members manage data, assess their energy and environmental performance, set targets and track savings over time. They develop and share knowledge and best practices through data-driven research,webinars and networking to help plan, implement and verify improvements.

The Mayors' Megawatt Challenge is a program of the Climate Challenge Network.
Making Savings
  Savings 2022
(vs. 2021)
Savings Percent Savings 2022
(vs. 2020)
Savings Percent
Electricity no data   no data  
Demand no data   no data  
Thermal no data   no data  
Total energy no data   no data  
Water no data   no data  
Greenhouse gas emissions (CO2e) no data no data
Energy Cost Savings no data no data
Not all participant buildings are reporting in all years or in all categories. Savings are reported on a net basis.
Results as of December 31, 2022
numbers in ( ) are increases
What's new?
Total municipalities 25
 Barrie (City of)  Peel (Region of)
 Bonnechere Valley (Township of)  Prince Albert SK (City of)
 Brampton (City of)  Richmond Hill (City of)
 Caledon (Town of)  Stirling-Rawdon (Township of)
 Carleton Place (Town of)  Stratford (City of)
 Essex County (Town of)  Toronto (City of)
 Goderich (Town of)  Town Hall Challenge
 Halton Hills (Town of)  TRCA
 King (Township of)  Vaughan (City of)
 La Broquerie (in Manitoba)  Village of Westport
 Markham (City of)  Whitby (Town of)
 Mississauga (City of)  Winnipeg (City of)
 Oakville (Town of)
Total buildings 118
Total building area 1,080,050 m2
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