ENERGY STAR Portfolio Manager for Canadian multi-residential buildings: score, EUI and what to do with them

ENERGY STAR Portfolio Manager is the most widely used benchmarking tool for buildings in Canada, and for many owners it is also the least understood. It is treated as a filing portal, opened once a year. It is actually a benchmarking engine that, given clean monthly data, produces a score, a set of intensities and a weather-normalized trend for every property in the account.

This guide is written for owners and managers of multi-residential buildings in Canada, where the score has only been available since 2021 and where the data entry has its own quirks.

The Canadian version

Natural Resources Canada administers Portfolio Manager for Canada. It is a free, online, secure platform adapted to include Canadian weather, postal codes, both official languages, the metric system and Canadian data. Canadian 1 to 100 scores are built from Statistics Canada's Survey of Commercial and Institutional Energy Use, per NRCan's scores page, and NRCan's benchmarking FAQ states that a score for multifamily housing has been available as of August 2021 for buildings that meet the requirements.

What the score means

The score is a percentile. NRCan explains that a score of 50 means half of the peer group of buildings performs better and half worse, and 75 or more indicates top performance. EPA's description of how the score is calculated adds two points that matter for interpretation: the building is compared with buildings nationwide of the same primary use, not with other Portfolio Manager users, and the model adjusts for weather and for key property use details such as size and occupancy.

For a multi-residential building, the use details are the number of units, the number of bedrooms, and whether laundry and other common facilities are present. Get these wrong and the score is wrong, in either direction. Because the score is a percentile against a national peer group, it also moves when the peer data is refreshed, which is why a building can change score without changing anything. Treat the score as a position, and the weather-normalized intensity as the trend.

EUI, site and source

Energy use intensity is total annual energy divided by gross floor area. Portfolio Manager reports both site EUI and source EUI. Site energy is the energy consumed as reflected on the utility bills; source energy adds transmission, delivery and production losses, and EPA relies on source EUI for the score. Canadian reporting programs generally publish site EUI. VE-MAP works in equivalent kWh per square foot (site) so that a property manager can relate the number to the bills, and shows the Portfolio Manager site EUI beside it for reference.

What a multi-residential property needs

• Property profile: gross floor area (consistent with what you use everywhere else), year built, units, and the multifamily use details.
• One meter per utility account, with the correct unit (kWh for electricity, cubic metres for gas and water in the Canadian tool).
• Twelve full months of consumption for every meter, with no gaps and no overlaps. Meters marked as not included in metrics are excluded from the score.
• Tenant-paid accounts if they are inside the property boundary; the score needs whole-building energy.
• Water meters if you want water use intensity and the water reporting Ontario and Toronto ask for.

Keeping it in sync with your bills

The annual data entry problem is really a monthly data problem deferred. Bills do not align with calendar months, some months are estimated, credits and adjustments appear, and Green Button data and PDF bills can disagree. The fix is to validate monthly and push monthly. VE-MAP connects to a Portfolio Manager account, reads the property, its meters and its metrics, and can push validated consumption to each meter after a preview and an explicit confirmation. The push checks what the meter already holds and skips overlapping periods, so re-running it only adds new months. The validation article explains what happens to each bill before it is eligible to be pushed.

Turning the score into decisions

A score on its own does not tell a property team what to do. Three habits make it useful:

1. Track the score with the weather-normalized EUI, not alone. The score moves with peer data updates as well as with your building; the normalized EUI moves only with your building.
2. Split the intensities by commodity. A building can hold a middling score while its gas intensity is far above peers; the annual benchmark report shows electricity, gas and water against a multi-residential average so the driver is visible. See what the annual benchmark report shows.
3. Assign the finding. A high water intensity is a plumbing investigation with an owner and a date in the action plan, not a footnote in the filing.

Common mistakes

• Entering bill dates as calendar months without adjusting for read cycles, which shifts consumption between months and years.
• Loading both the utility PDF and the Green Button record for the same period, doubling the month.
• Forgetting a second gas account or a separate house meter.
• Changing the gross floor area between years without a note, which moves every intensity at once.
• Leaving a meter active after the account closed, which shows as a gap and can void the score.

FAQ

Is Portfolio Manager mandatory?

It is the tool the Ontario EWRB program and the Toronto, Montreal and Vancouver by-laws use for submissions; see building energy reporting rules across the three cities. Outside those programs it is voluntary and free.

Our building type has no Canadian score. What then?

NRCan's FAQ notes that properties without a score can still benchmark on national median energy use, emissions medians and weather-normalized historic performance. Our annual report adds the multi-residential peer comparison per commodity.

Can VE-MAP replace Portfolio Manager?

No, and it is not meant to. Portfolio Manager is the filing and scoring system; VE-MAP is the data capture, validation, monthly review and action plan layer that keeps it accurate. The two are connected in both directions. Details on the about page.