How to improve your ENERGY STAR score
Your ENERGY STAR score compares your building to its peers on a 1 to 100 scale. Here is what actually moves it, where the quick points are, and why clean data comes first.
The ENERGY STAR score is the single number most owners are judged on, yet few teams can say exactly what drives it. It is a 1 to 100 percentile rank. A score of 50 means your building performs better than half of comparable buildings nationwide, and a score of 75 or higher puts you in the top quartile and, for eligible property types, in reach of certification. This guide covers what the score actually measures and the levers that move it in the right direction.
The important thing to understand first: the score is not a raw energy number. It compares your building against similar buildings after adjusting for weather, size, occupancy, and business activity, so a data center and a school are held to different expectations. That normalization is why two buildings with identical utility bills can score very differently, and why the quality of the data you enter matters as much as the energy you use.
How the score is calculated
Portfolio Manager compares your building's source energy use intensity against a national reference dataset for your property type, then converts that comparison to a percentile. Source energy counts the full fuel cost of the electricity and gas you consume, including generation and transmission losses, which is why an all-electric building and a gas-heated building are compared on a common basis. The model also adjusts for the drivers you report, such as operating hours, worker density, and floor area.
Two consequences follow directly. First, weather is already handled by the model, so a mild year does not automatically lift your score. Second, the property-use details you enter feed the expected-energy calculation, so incomplete or wrong values distort the score before any efficiency work is even considered.
Fix the data before chasing points
Most scores that look wrong are data problems, not performance problems. Before you plan a single retrofit, confirm the inputs are right.
- Complete, gap-free 12 months of energy across every meter and fuel, including any submeters and separately billed tenant loads
- Correct gross floor area and property-use details, since an understated area inflates your energy use intensity and lowers the score
- Accurate operating hours, worker count, and other use details that set the expected-energy baseline
- No estimated or duplicated bills silently inflating consumption
This is the step teams most often skip and most often get wrong. When bills arrive as PDFs, span odd billing periods, and cover dozens of meters, assembling a clean 12-month picture by hand is slow and error-prone. Getting that foundation right is often worth several points on its own, with no capital spent.
The levers that actually move the score
Cut the biggest end uses
The score responds to real reductions in source energy. In commercial buildings that usually means HVAC and lighting first: tightening schedules and setpoints, commissioning controls, and replacing old lighting with LED. These are the measures ENERGY STAR points to when it advises owners to analyze results and target low performers for the largest gains.
Shift the fuel mix where it helps
Because the score uses source energy, moving an efficient electric load can help or hurt depending on your grid and property type. Run the comparison in Portfolio Manager rather than assuming, and treat electrification as an emissions decision first and a score decision second.
Verify, then re-benchmark
The score is a moving target. Re-enter data every month, watch the trend rather than a single reading, and confirm that completed projects show up as sustained reductions. If a measure does not move the meter, the score will tell you.
A simple order of operations
- Assemble a complete, validated 12 months of energy across all meters and fuels
- Verify floor area and property-use details in Portfolio Manager
- Read the current score and identify your largest source-energy end uses
- Prioritize low-cost operational fixes, then capital measures with the best payback
- Re-benchmark monthly and confirm savings persist
None of this requires guesswork. It requires a clean, current data foundation and a disciplined loop of measure, act, and re-check.
Frequently asked questions
What is a good ENERGY STAR score?
A score of 50 is the national median for your property type. A score of 75 or higher places a building in the top quartile of performance and, for eligible property types, meets one of the requirements for ENERGY STAR certification.
Why did my ENERGY STAR score drop without any change in energy use?
The score is a percentile against peers and depends on the property-use details you enter, such as floor area and operating hours. A correction to those inputs, a change in the reference dataset, or a missing month of data can move the score even when consumption is flat.
Does the ENERGY STAR score adjust for weather?
Yes. The model already normalizes for weather along with size, occupancy, and business activity, so a mild or severe year does not by itself change your score. Real reductions in source energy are what move it.
How long does it take to improve an ENERGY STAR score?
Correcting data errors can raise a score immediately once 12 complete months are in place. Operational fixes show up within a few billing cycles, while capital retrofits are confirmed by re-benchmarking over the following year.
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