Energy and Water Reporting and Benchmarking

Please note that the reporting deadline has been extended to October 1, 2020 due to the impacts of COVID-19. For more inforamtion, visit Ontario's EWRB webpage

Energy and Water Reporting and Benchmarking

The Energy and Water Reporting and Benchmarking (EWRB) provincial regulation is designed to help building owners and property managers improve their building’s energy and water efficiency.

22% of all greenhouse gas (GHG) emissions in Markham stem from commercial buildings. By targeting building efficiency and greenhouse gas emissions, Markham can achieve the City-wide goal of net-zero emissions by 2050 effectively helping the City take action against climate change

The Ontario Energy and Water Reporting and Benchmarking regulation can help building owners and property managers save money, identify opportunities to improve energy and water use, and compare their usage to other similar buildings.

Which buildings are affected by EWRB?

EWRB Update July 1, 2020

Please note that the ministry has amended O. Reg. 506/18 to delay the roll-out of the Energy and Water Reporting and Benchmarking initiative to buildings between 50,000 and 100,000 square feet until 2023, allowing three additional years for small building owners to prepare for reporting their energy and water usage data.


Through the provincial regulation, privately owned buildings greater than 100,000 square feet of gross floor area are required to report the annual energy and water consumption and performance data to the Ontario Ministry of Energy, Northern Development and Mines.

These buildings include large multi-unit residential, commercial, and some industrial buildings. To find out if you are required to report on your building, please refer to the Municipal Property Assessment Corporation (MPAC) property code  or visit the EWRB for more information.

The next reporting deadline is July 1, 2020 October 1, 2020

Key Reporting Dates

*for the 2020 reporting year, the Government of Ontario will accept EWRB submission data until October 1, 2020 due to COVID-19. This is considered a one-time relief extension.

Annually, by July 1 October 1, 2020 

  • Commercial and industrial buildings with a gross square footage of 100,000 and larger
  • Multi-unit residential buildings with a gross square footage of 100,000 and larger
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