Energy and Water Reporting Benchmarking Regulation

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Energy and Water Reporting and Benchmarking Regulation of Ontario

Large building owners are required to report their energy, water and greenhouse gas emissions to the Ministry of Energy, Northern Development and Mines on an annual basis under the Energy and Water Reporting and Benchmarking (EWRB) regulation.

The EWRB is designed to improve energy and water efficiency in large, privately-owned buildings. This regulation applies to privately-owned buildings that are 50,000 square feet or larger, including commercial buildings, multi-unit residential buildings (with more than 10 units), and some industrial buildings. 

To assist you, Waterloo North Hydro has created the below resource guide.

When Do I Need To Report?

The year you are required to begin reporting depends on the size of your property. 

If you own a building that is 100,000 square feet or larger, you may need to report your building's annual consumption to the Ministry of Energy, Northern Development and Mines by July 1 each year.

Please note, you're reporting on the previous year's consumption (so your July 1, 2021 submission will be based on 2020 consumption data).

The EWRB reporting requirements are being phased in based on the size of your building, as shown in the following table:

Deadline for Reporting to Ministry of Energy, Northern Development, and Mines

Commercial and Industrial Building Gross Floor Area

 July 1 each year beginning July 1, 2018

250,000 square feet and larger

 July 1 each year beginning July 1, 2019

100,000 square feet and larger

July 1, 2023

(usage for 2022 calendar year)

50,000 square feet and larger


How Do I Request My Data?

Waterloo North Hydro is required to make aggregated electricity consumption information available to building owners upon request, so that they can report their data to the Ministry of Energy annually by July 1

Please note, water consumption information will be provided by the City of Waterloo, the Township of Woolwich,  or the Region of Waterloo, depending on your property’s location.

Please submit your request(s) for information as soon as possible. Requests can take up to four weeks to process. 

Follow these steps to request your data:

  1. Complete and submit our online EWRB Request Form.
  2. Review Process: 
    If we need more information, one of our representatives will contact you to obtain the information needed to complete your request.
  3. Data Submission
    Once we have received, reviewed and verified your information, we will process your request and send you the yearly aggregated electricity consumption data for your property as quickly as possible.

 *The EWRB Request Form is also available as a PDF if required. Please click here to download a PDF version of the form.

What Do I Need To Begin My Application?

Before you start your application, we will need:

  1. The service address for the property you are requesting data for.
  2. The EWRB Number provided to you by the Ministry of Energy for the property. If you do not have an EWRB number, you can get one from the Ministry of Energy by emailing or calling 1-844-274-0689.
  3. Square footage information for the property

Click here to access our EWRB Request Form.

Where Can I Get More Information?

There are a number of resources available to assist you in better understanding the Energy and Water Reporting Benchmarking Regulation: 

Who Can I Contact With Questions?

To learn more about the regulation, including how to report your data, and the deadline to report, please consult Ontario Regulation 20/17 and visit

If you require assistance at any time, our Customer Support staff are available to assist you. Please contact us at 519-886-5090 or by email at with any questions you may have.