Energy Benchmarking for Commercial Buildings: A Practical Starting Point with ENERGY STAR Portfolio Manager
It is hard to improve something you have not measured. That is the simple idea behind energy benchmarking, and it is why so many property owners start there.
Benchmarking tells you how much energy a building uses, how that compares with similar buildings, and how the picture changes over time. It does not require a capital project or a consultant. It requires your utility data and a free online tool.
This guide covers what benchmarking is, why it matters for the business side of ownership, and how to get your first results.
What Is Energy Benchmarking?
Energy benchmarking is the practice of tracking a building’s energy use and comparing it against a reference point. That reference point might be your own history, similar buildings, or a performance target.
For most U.S. commercial properties, the common tool is ENERGY STAR Portfolio Manager. It is EPA’s free online benchmarking tool. You enter property details and monthly utility data, and it calculates metrics you can track year after year.
Two numbers come up most often.
Energy Use Intensity (EUI)
EUI expresses energy use relative to building size. It takes the building’s total energy consumption and divides it by square footage. This makes it possible to compare a 40,000-square-foot office with a 120,000-square-foot one, or to compare one building’s performance from year to year.
A rising EUI is often the first sign that something has changed. It might be equipment drift, a controls setting, a change in occupancy, or a system that is working harder than it should.
The ENERGY STAR Score
For many property types, Portfolio Manager also generates a score from 1 to 100. The score compares your building’s energy performance with similar buildings, adjusting for factors like size, location, and operating characteristics. A score of 50 represents median performance. A score of 75 or higher makes a building eligible to apply for ENERGY STAR certification.
Not every property type receives a score, so check what Portfolio Manager supports for your building. EUI is still useful either way.
Why Benchmarking Matters for Your Bottom Line
Benchmarking is sometimes treated as a compliance exercise. It is more useful when you treat it as a management tool.
It connects to operating costs
Energy is one of the larger controllable line items in a commercial operating budget. According to the EIA, commercial buildings account for roughly 17% of total U.S. energy consumption. At the building level, knowing your baseline helps you see whether utility costs are rising because rates changed or because consumption did.
ENERGY STAR also reports that certified buildings use about 35% less energy than typical similar buildings. That figure is not a promise for any single property. It does show what is possible when buildings are measured and managed with intention.
It supports tenant and lender conversations
Tenants and lenders increasingly ask about building performance. Having documented, consistent energy data makes those conversations easier. It signals that a property is well run, and it saves scrambling when a request arrives.
It prepares you for local requirements
A growing number of U.S. cities and states have adopted benchmarking requirements or building performance standards. New York City, Washington, D.C., and Denver are well-known examples. Requirements vary by jurisdiction, building size, and property type, so check the rules where your property is located.
Even if your property is not covered today, a baseline puts you ahead. Owners who already track their data are rarely caught off guard when rules change.
A Note on the EPA to DOE Transition
On August 28, 2026, it was announced that ENERGY STAR program management is transitioning from EPA to the Department of Energy, with full transfer expected by July 2027. ENERGY STAR Portfolio Manager remains available throughout the transition.
For property owners, the practical takeaway is simple. There is no reason to wait. Set up your account and start building your data now, and keep an eye on official announcements for any changes to the tool’s access or branding.
How to Get Started: Five Steps
You do not need a perfect data set to begin. You need a reasonable one.
Step 1: Gather 12 months of utility data
Collect electricity, natural gas, and any other fuel or district energy bills for the past 12 months. If you are a landlord whose tenants pay their own utilities, find out early what whole-building data you can access. Utility providers in some areas offer data-sharing options, so ask yours.
Step 2: Collect basic property details
You will typically need:
– Gross floor area
– Property type and primary use
– Year built
– Operating hours
– Number of occupants or workers, where relevant
– Any special spaces, such as parking structures or data rooms
Step 3: Create your Portfolio Manager account
Set up a free account, add your property, and enter the details. Take care with square footage and use type, since small input errors can distort results.
Step 4: Enter your utility data and review the results
Add meters and monthly consumption. Portfolio Manager will calculate your EUI and, where applicable, your ENERGY STAR score. Look at the trends as well as the totals.
Step 5: Check your data for gaps
If a month looks unusually high or low, look at the bill. Estimated reads, billing-period overlaps, and missing meters are common culprits. Cleaning up the data now makes next year’s comparison more reliable.
What to Do With Your Results
A benchmark is a starting point. Here is how to put it to work.
Look for the questions, not just the number
If your EUI is higher than expected, or your score is lower than you hoped, treat it as information. The next question is why. Review operating schedules, controls settings, and the age and condition of major equipment.
Prioritize low-cost actions first
Many early improvements involve operations rather than equipment: adjusting schedules, checking setpoints, and confirming that systems are running when they should. These steps are often a sensible place to begin, before considering larger investments.
Plan larger projects with data
When you do evaluate bigger upgrades, your benchmark gives you a baseline to measure against. It supports a stronger business case and a clearer way to verify results afterward.
Repeat annually
Benchmarking works best as a habit. Update your data each year, review the trends, and add the findings to your capital planning conversations.
If you want a broader view of what an energy checkup involves, our October post on the business case for a property energy checkup is a good companion to this one.
Start With What You Know
Benchmarking is a practical, low-cost way to understand where a building stands today. It will not answer every question, but it will help you ask better ones.
If you would like help turning that information into a plan, the complimentary Sustainable Property ROI Audit Kit is a useful first step. You can download it at https://pages.clearbluecommercial.com/audit-request. And if you have questions about your property, contact Carolyn at carolyn@clearbluecommercial.com.