
Ontario Energy and Water Reporting and Benchmarking (EWRB)
Managed by Reporting Compliance Experts
Zenith Net-Zero provides a turnkey EWRB reporting service for building owners and property managers in Ontario and Toronto. From gathering building information and coordinating utility data to submitting the required reports, we manage the entire process on your behalf.Meet your mandatory reporting obligations without taking on the administrative burden yourself.
Who Must Comply?
Ontario and Toronto have separate energy and water reporting requirements. Buildings may be subject to one or both, depending on their location, size and property type.
Ontario EWRB: O. Reg. 506/18
Ontario’s Energy and Water Reporting and Benchmarking program applies to eligible commercial, multi-residential, institutional and certain industrial buildings with a gross floor area ≥ 4,645 sq. m. / 50,000 sq. ft.
Reporting Deadline: July 1 annually to the Province of Ontario
Toronto: Municipal Code Chapter 367
Toronto’s energy and water reporting requirement applies to qualifying buildings within the City with a gross floor area ≥ 929 sq. m. / 10,000 sq. ft., , starting in 2027.
Reporting Deadline: July 2 annually to the City of Toronto.
Buildings subject to both requirements must submit separately to the Province and the City. Reporting to one does not satisfy the other.
EWRB Data Verification for Large Buildings
Buildings with 100,000 sq. ft. or more of gross floor area are subject to additional verification requirements.
For Ontario EWRB reporting, the required information must be verified by a qualified professional before submission in the first year the verification requirement applies and every five years thereafter.
The verification process reviews the information reported for the property, including energy and water data and relevant building characteristics, to confirm that the reported information is appropriate and reasonable for the building.
Zenith Net-Zero provides independent EWRB verification backed by SCC accreditation and technical expertise. As an SCC-accredited validation and verification body, Zenith applies internationally recognized ISO 14064 standards and rigorous verification practices to help ensure your reporting is ready for submission.
EWRB Compliance, Managed by Experts
Zenith Net-Zero combines regulatory knowledge, reporting expertise and a disciplined process to prepare accurate submissions and meet applicable deadlines.
Our turnkey service includes:
✔ Setting up or updating your ENERGY STAR® Portfolio Manager account.
✔ Collecting and reviewing required building information.
✔ Coordinating directly with utility providers to obtain aggregated energy and water consumption data for common and private areas.
✔ Entering and reviewing building and utility data in Portfolio Manager.
✔ Preparing and submitting reports to the Province of Ontario and the City of Toronto, as applicable.
✔ Providing ongoing support for annual reporting.
Let Our Experts Manage Your EWRB Reporting
Whether you manage one building or a portfolio, Zenith Net-Zero handles the entire reporting process on your behalf.
Complete the form below to request a quote.

