ONTARIO EWRB · TORONTO ENERGY AND WATER REPORTING

What is EWRB? Ontario's energy reporting rule, explained.

EWRB (Energy and Water Reporting and Benchmarking) is Ontario's rule, under Ontario Regulation 506/18, that requires owners of commercial, multi-unit residential, institutional and industrial buildings of 50,000 sq ft (4,645 m²) and larger to report their building's energy and water use every year by July 1, using ENERGY STAR Portfolio Manager.

Toronto has its own reporting bylaw, Municipal Code Chapter 367, which reaches down to 10,000 sq ft (929 m²) from 2027. The two are separate submissions: reporting to one does not satisfy the other. Owners can authorize someone to report on their behalf, and that's what we do: we set up Portfolio Manager, gather your utility data, and file on time.

Have us file for you Check if you must report

KEY DATES

July 1, every year
Ontario EWRB report due for buildings of 50,000 sq ft and up
July 2, every year
City of Toronto report due for buildings of 50,000 sq ft and up
July 2, 2027
First City of Toronto report for buildings of 10,000 to 49,999 sq ft

WHO MUST REPORT

Find your building's obligations.

Checked October 2026 against Ontario and City of Toronto guidance.
Building size	Ontario (EWRB, O. Reg. 506/18)	City of Toronto (Chapter 367)	Data verification
100,000 sq ft and up 9,290 m² and up	Report by July 1 each year	Report by July 2 each year	By a certified professional in the first reporting year, then every five years
50,000 to 99,999 sq ft 4,645 to 9,290 m²	Report by July 1 each year	Report by July 2 each year	Not required
10,000 to 49,999 sq ft 929 to 4,645 m²	Not required	First report by July 2, 2027 (Toronto only)	Not required

Publicly owned buildings are exempt from Ontario reporting, and some buildings qualify for ongoing or one-year exemptions. Sources: Ontario: report energy and water use for large buildings · City of Toronto: energy and water reporting.

WHAT WE DO

Compliance, then the savings it points to.

Set up or clean up your ENERGY STAR Portfolio Manager account and building profile
Collect electricity, gas and water data, including tenant-metered spaces where possible
File your Ontario EWRB and City of Toronto reports
Arrange data verification for buildings of 100,000 sq ft and up
Show how your building compares and which upgrades and incentives would improve its score

Your score is public. Make it a good one.

Benchmarking puts your building's energy performance next to its peers. The same data shows where the savings are, and which incentives can pay for the fixes.

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WHO CAN FILE IT FOR ME?

We report on your behalf, every year.

Ontario lets building owners authorize a third party to report for them. Send us your building address and we'll confirm which rules apply, what we need from you, and the filing fee before you commit.

Ontario EWRB and City of Toronto reports, filed together
Reminders before every deadline, so nothing is missed
A plain-language summary of how your building scored

EWRB RESOURCES

Reporting, in detail.

FREE TOOL

EWRB checker

Find out in 30 seconds whether your building must report, and when.

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EWRB data verification

Ontario requires buildings of 100,000 sq ft (9,290 m²) and larger to have their EWRB energy and water data verified by a…

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Ontario EWRB vs Toronto reporting

Toronto buildings can face two reporting rules. They use the same data and the same software, but different deadlines and size limits.

Learn more →RESEARCH

Ontario building energy benchmarks

Median energy use by building type and region, from 6,740 Ontario buildings.

Learn more →BUILDING TYPE

Condos and rental buildings

Multi-unit residential buildings are the largest group reporting under Ontario's EWRB rule: 3,306 of 6,740 buildings in the 2024 provincial data. Most…

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ASHRAE Level 1 energy audit

An ASHRAE (the widely accepted industry standard) Level 1 energy audit is a walk-through analysis: we review 12 or more months of utility bills, benchmark the building…

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QUESTIONS

EWRB questions

What is EWRB?

EWRB stands for Energy and Water Reporting and Benchmarking. It is Ontario's requirement, under Ontario Regulation 506/18, for owners of commercial, multi-unit residential, institutional and industrial buildings of 50,000 square feet (4,645 m²) and larger to report their energy and water use every year through ENERGY STAR Portfolio Manager.

What is Ontario Regulation 506/18?

Ontario Regulation 506/18 is the provincial regulation that sets out the Energy and Water Reporting and Benchmarking (EWRB) requirements: which buildings must report, what data to submit, the July 1 deadline and the data verification rules.

Can someone report EWRB on my behalf?

Yes. Building owners can authorize a third party, such as Next Level Consulting, to collect the data and submit the report for them.

Which Ontario buildings must report energy and water use?

Buildings of 50,000 square feet and larger must report to the Province every year under Ontario's Energy and Water Reporting and Benchmarking (EWRB) program. Publicly owned buildings are exempt, and some other exemptions apply.

When is the Ontario EWRB deadline?

July 1 each year, covering energy and water use from January 1 to December 31 of the previous year.

Does Toronto have its own reporting bylaw?

Yes, Toronto Municipal Code Chapter 367. Toronto buildings of 50,000 square feet (4,645 m²) and larger report to the City annually by July 2, separately from the Ontario report. Buildings from 10,000 to 49,999 square feet (929 to 4,645 m²) file their first City report by July 2, 2027.

Does my data need to be verified?

Under Ontario's rule, buildings of 100,000 square feet (9,290 m²) or more need their data verified by a qualified professional in the first year the requirement applies and every five years after.

What tool is used to report?

ENERGY STAR Portfolio Manager, a free tool adapted for Canada by Natural Resources Canada.