ENERGY STAR Certification for Commercial Buildings: Complete Guide (2026)

The blue ENERGY STAR label is the most recognized building energy performance credential in the United States. Administered by the U.S. Environmental Protection Agency, ENERGY STAR certification tells tenants, investors, lenders, and policymakers something concrete and independently verified: this building uses significantly less energy than its peers. In a commercial real estate environment where energy transparency is increasingly mandated and ESG commitments are reshaping tenant requirements, certification has moved from a marketing differentiator to a competitive necessity in many markets.

This guide covers everything you need to know about earning ENERGY STAR certification for your commercial building — what the program is, which building types are eligible, the exact requirements you must meet, the step-by-step certification process, what it costs, and the business case for pursuing it. We also cover what to do if your building does not yet qualify, and how to build a path to the score of 75 or above that certification requires.

What Is ENERGY STAR Certification for Buildings?

ENERGY STAR for Buildings and Plants is a program administered by the U.S. Environmental Protection Agency under the ENERGY STAR brand. Unlike ENERGY STAR product certifications — which certify that appliances, electronics, and equipment meet specific energy efficiency thresholds — the ENERGY STAR buildings certification is performance-based: it certifies that a building performs better than at least 75% of similar buildings nationwide, as measured by its ENERGY STAR score in Portfolio Manager.

The 75-point threshold is a firm EPA requirement. A building that scores 74 does not qualify; one that scores exactly 75 does. The score is not static — it changes as your building's energy data updates and as EPA recalibrates the national baseline using new Commercial Buildings Energy Consumption Survey (CBECS) data. This means buildings must maintain their score above 75 to renew certification each year.

ENERGY STAR certification is an annual program. Once certified, a building must reapply each year to maintain the label, submitting updated energy data and renewed Professional Engineer verification. This continuous requirement is intentional: it ensures the label reflects actual ongoing performance, not a one-time snapshot.

ENERGY STAR vs. LEED: Key Differences

ENERGY STAR is frequently compared to LEED (Leadership in Energy and Environmental Design), the green building certification program administered by the U.S. Green Building Council. The two serve different purposes and are not mutually exclusive — many buildings hold both certifications.

For a detailed comparison, see our guide: LEED vs. ENERGY STAR: Which Certification Is Right for Your Building?

Which Building Types Are Eligible?

ENERGY STAR certification is available for a broad range of commercial and institutional building types. The EPA's program has expanded significantly over the past two decades and now covers more than 80 eligible space types. Not every space type generates a 1–100 scored comparison — some receive only an EUI calculation because the national sample of similar buildings is insufficient for a statistically robust percentile comparison. However, the certification label is available to any space type that receives a valid 1–100 score of 75 or above.

Primary Eligible Building Categories

The EPA periodically adds new space types as sufficient national data becomes available. For the current complete list of eligible space types and their scoring availability, refer to the ENERGY STAR Portfolio Manager reference documentation, which is updated regularly.

ENERGY STAR Certification Requirements

Three core requirements must be met before a building can receive ENERGY STAR certification. Understanding each one helps you plan your timeline and avoid surprises during the application process.

Requirement 1: ENERGY STAR Score of 75 or Higher

Your building must achieve a score of 75 or above in ENERGY STAR Portfolio Manager, based on at least 12 consecutive months of complete energy data. The score is generated automatically by Portfolio Manager once you have entered all required data and property use details accurately.

The score of 75 means your building's normalized energy use is in the top quartile of similar buildings nationally — better than at least 75% of its peers. This threshold is set by the EPA and is the same regardless of building type, location, or age. A 1920s office building in New York City and a newly constructed office in Phoenix must both achieve a score of 75 to qualify, though the comparison group for each is calibrated to reflect typical performance for that building type and climate zone.

Requirement 2: 12 Consecutive Months of Complete Energy Data

Portfolio Manager requires at minimum 12 full consecutive calendar months of energy meter data to calculate a valid ENERGY STAR score. The data must cover all energy sources consumed by the building — electricity, natural gas, district steam, fuel oil, and any other fuels. All utility meters associated with the building footprint must be included; omitting meters creates a data accuracy problem and a compliance risk if the application is later reviewed.

The 12-month data window must not have any gaps — a missing month of electricity data, for example, will prevent Portfolio Manager from generating a valid score. Ensure your data is complete before initiating the PE verification process.

Requirement 3: Professional Engineer or Registered Architect Verification

Before submitting your certification application to the EPA, a Licensed Professional Engineer (PE), Registered Architect (RA), or qualifying Energy Inspector/Auditor (EI) recognized by the EPA must verify the accuracy of your Portfolio Manager data. This verification requirement exists to ensure that the data supporting your score reflects actual conditions — not data entry errors, missing meters, or inflated operational parameters.

The verifier must complete EPA's standardized verification checklist, which covers:

• Confirmation that all meters associated with the building are included
• Verification of gross floor area and space type classifications
• Confirmation that operating characteristics (hours, occupancy, plug load density) are accurate
• Review of at least 3 months of actual utility bills against Portfolio Manager data
• On-site inspection to verify physical building conditions match the Portfolio Manager profile

The PE/RA verification is the primary cost associated with ENERGY STAR certification. Typical fees range from approximately $500 to $3,000 or more for a single building, depending on market rates for qualified engineers in your area, building complexity, and the number of meters requiring review. Multi-building portfolios often achieve lower per-building costs by engaging a single engineer to verify multiple properties simultaneously. Always confirm that your chosen verifier is licensed in the state where the building is located.

The Certification Process: Step by Step

Once you meet all three requirements above, the actual certification application process through Portfolio Manager is straightforward. Here is the complete sequence from setup to receiving your certificate.

• 1

  Benchmark in Portfolio Manager (12 Months of Data)

  If you have not already set up your building in ENERGY STAR Portfolio Manager, start there. Create a free account at energystar.gov/portfoliomanager, add your property, enter all meters and 12 consecutive months of energy data, and complete the property use details. See our companion guide: The Ultimate Guide to Commercial Building Energy Benchmarking (2026) for step-by-step setup instructions. Once your data is complete and accurate, Portfolio Manager will display your current ENERGY STAR score. If it is 75 or above, you are ready to proceed to verification.

• 2

  Verify Data Accuracy Before Engaging a PE

  Before spending money on PE verification, do a self-audit of your Portfolio Manager data. Confirm that all meters are included, that your gross floor area is correct (check your building permit or lease documents, not just memory), that operating hours reflect actual occupancy rather than theoretical maximums, and that there are no gaps in your energy data. A data accuracy problem discovered by the PE will require remediation before the verification can be completed, adding cost and delay. Fix data issues first.

• 3

  Engage a Licensed PE or RA for Verification

  Select a qualified PE or RA with experience in ENERGY STAR verification and a current license in the state where your building is located. Share your Portfolio Manager property with the verifier using Portfolio Manager's built-in data-sharing function — this gives them read-only access to your property data without requiring you to share your login credentials. Provide the verifier with at least 12 months of actual utility bills (paper or PDF) for comparison against Portfolio Manager data. Schedule the required on-site inspection visit. The verification process typically takes 2–6 weeks from engagement to completion.

• 4

  PE Completes and Signs the Statement of Energy Performance

  Once verification is complete, the PE or RA will sign the Statement of Energy Performance (SEP) — a standardized EPA form that documents the verified score, the verification methodology, and the engineer's professional attestation of data accuracy. The SEP is generated directly from Portfolio Manager and signed electronically or on paper. Without a signed SEP from a qualified PE or RA, your application cannot be submitted to EPA. Note that the SEP is valid for 90 days from the date of the PE's signature — submit your application to EPA within that window.

• 5

  Submit Your Application to EPA

  With your verified SEP in hand, submit your certification application through Portfolio Manager. The application is submitted entirely online, at no cost — there is no EPA application fee for ENERGY STAR building certification. You will upload the signed SEP, confirm your building information, and submit. EPA typically processes applications within 4–8 weeks, though processing times can vary. You will receive email notification when your certification is approved. Once approved, your building's ENERGY STAR certification status and score are publicly visible in EPA's ENERGY STAR Certified Buildings database.

• 6

  Receive Your Certificate and Plaque

  Upon approval, EPA issues a formal ENERGY STAR certification document and provides access to the licensed ENERGY STAR Certified mark, which you may display in marketing materials, on the building, and in leasing documents subject to EPA's brand use guidelines. Physical ENERGY STAR building plaques are available for purchase through EPA's approved vendors — these are the familiar blue and white plaques you see displayed in lobbies of certified buildings. Display the plaque prominently; it communicates your building's performance credentials to every visitor and tenant.

What ENERGY STAR Certification Costs

ENERGY STAR certification has a two-part cost structure that is important to understand before you begin the process.

EPA Application: Free

The U.S. EPA charges no application fee for ENERGY STAR building certification. Portfolio Manager itself is free to use. There is no annual renewal fee charged by EPA. The certification program has been free since its inception, which is a significant advantage over other green building programs that charge substantial registration and review fees.

PE / RA Verification: Typically $500–$3,000+

The third-party verification by a Licensed Professional Engineer or Registered Architect is the primary out-of-pocket cost. Verification fees vary based on:

• Market rates for licensed engineers in your metropolitan area
• Building complexity — more meters, more space types, and more complex utility accounts take longer to verify
• Travel requirements for the on-site inspection (remote markets may carry higher travel fees)
• Portfolio volume discounts — engineering firms often offer lower per-building rates for multi-building verification engagements

As a general reference, single-building PE verification fees in major U.S. markets typically range from approximately $500 for a simple single-tenant office to $2,000–$3,000 or more for a complex multi-tenant or mixed-use property. These are typical ranges based on market observation; your actual fee will depend on the specific engineer and circumstances.

The Business Case for ENERGY STAR Certification

The investment in ENERGY STAR certification — primarily the PE verification fee and the staff time to set up and maintain Portfolio Manager — needs to be evaluated against the concrete and quantifiable business benefits it delivers. For most commercial buildings in competitive leasing markets, the case is strong.

Lower Operating Costs: The Foundation of the Case

The EPA states that ENERGY STAR-certified buildings use, on average, about 35% less energy than typical buildings. This is not a projection — it is an empirical result derived from the benchmarking data underlying the certification program. A building cannot achieve a score of 75 or above without having substantially lower energy consumption than its peers, and lower energy consumption translates directly to lower utility bills.

The magnitude of the savings depends on building type and baseline performance. For a 100,000 sq ft office building in a market with rates above 12¢/kWh, the difference between a building performing at the median (ENERGY STAR score ~50) and one performing at certification level (score 75+) can represent $50,000 to $150,000 in annual energy cost savings. Achieving and maintaining that performance level justifies the certification investment many times over. Check our commercial energy rates guide to understand how rate levels in your market affect these economics.

Tenant Attraction and Retention

The commercial real estate market has shifted materially in the past five years. Institutional tenants — law firms, financial institutions, government agencies, consulting firms, and technology companies — are facing increasing pressure from their own stakeholders to occupy buildings that meet measurable sustainability standards. Many of these tenants now include energy certification requirements in their real estate specifications. A building with ENERGY STAR certification is on the shortlist; a building without it may not be considered at all for certain tenant categories.

Beyond new leasing, certification supports retention. A tenant whose lease is expiring and who has sustainability reporting obligations may have a meaningful preference for renewing in an ENERGY STAR-certified building over relocating to a similarly priced building without certification. In a market where tenant turnover costs are high — typically 10–20% of annual rent in build-out, concessions, and downtime — certification that supports retention delivers measurable financial value.

Building Valuation Effects

Academic and industry research has examined the relationship between ENERGY STAR certification and commercial real estate transaction prices and rents. While results vary by market, property type, and study methodology, the body of evidence consistently shows a positive premium associated with certification. Buildings with green credentials tend to command higher asking rents and sell at higher capitalization values in major metropolitan markets compared to non-certified buildings of otherwise similar characteristics.

Additionally, lenders providing commercial real estate financing are increasingly incorporating energy performance into underwriting. Green building certifications — including ENERGY STAR — are associated with lower default risk (higher-quality buildings with lower operating costs and stronger tenant profiles) and are recognized under green lending programs offered by Fannie Mae, Freddie Mac, and private commercial lenders.

Tax Incentives and Utility Rebates

ENERGY STAR certification can unlock or strengthen access to tax incentives and utility rebate programs. The Section 179D energy efficiency commercial buildings deduction provides tax deductions for qualifying energy-efficient improvements to commercial buildings — and buildings pursuing ENERGY STAR scores are often undertaking exactly the kind of HVAC, lighting, and envelope improvements that qualify. Use our IRA calculator to model applicable federal incentives for your building's efficiency investments.

At the state and utility level, ENERGY STAR performance is recognized by incentive programs in many jurisdictions. Some utilities offer rebates or incentives specifically for ENERGY STAR-certified buildings or for buildings achieving score improvements. The DSIRE database (dsireusa.org) catalogs state and local incentive programs, and many reference ENERGY STAR benchmarking as a qualifying condition. Visit our certifications marketplace to explore what programs apply to buildings in your state.

Portfolio-Wide Certification: Strategies for Multi-Building Owners

For owners and managers with portfolios of multiple commercial buildings, ENERGY STAR certification at portfolio scale delivers benefits beyond what individual building certification achieves in isolation.

Portfolio Benchmarking Identifies Underperformers

When you benchmark all buildings in a portfolio through Portfolio Manager simultaneously, outliers become immediately visible. A building scoring 35 in a portfolio where most buildings score 60–70 has a clear, actionable performance gap. That gap almost always reflects one or more addressable issues: a failing HVAC system, a lighting system long overdue for LED retrofit, a building controls setup that has never been calibrated to actual occupancy patterns. Portfolio benchmarking turns energy management into a data-driven discipline that identifies where capital investment will generate the highest returns.

Consolidated PE Verification Reduces Per-Building Cost

Engaging a single engineering firm to verify multiple buildings simultaneously drives significant economies of scale. Many engineering firms offer portfolio verification packages where the per-building fee for the third or fourth building is substantially lower than for the first — because the firm's familiarity with your data systems, utility accounts, and building types grows with each property. A 10-building portfolio certification engagement may achieve per-building verification costs 40–60% lower than 10 individual engagements with different engineers.

Portfolio Certification as a Brand Asset

For real estate investment trusts (REITs), institutional owners, and large corporate real estate departments, portfolio-wide ENERGY STAR certification becomes a brand and ESG reporting asset. Annual sustainability reports that can point to a specific number of ENERGY STAR-certified buildings, a specific total certified square footage, and year-over-year certification improvements tell a concrete, verifiable story about the portfolio's environmental performance. This increasingly matters to institutional investors with ESG mandates and to corporate tenants whose supplier and property standards require documented sustainability performance.

What to Do If Your Score Is Below 75

If your building's ENERGY STAR score is below 75 and you want to pursue certification, you have two options: fix data accuracy issues that may be artificially suppressing your score, or improve your building's actual energy performance until the score reaches 75.

Step 1: Audit Your Portfolio Manager Data

Before assuming your building needs physical improvements, verify that your Portfolio Manager data is accurate. The most common causes of artificially low scores are: missing utility meters, incorrect gross floor area, inaccurate weekly operating hours (a common error — defaulted to higher values than actual occupancy), and incorrect space type classifications. Correcting data accuracy issues does not improve your building's energy performance, but it ensures your score accurately reflects actual performance rather than phantom inefficiency.

Step 2: Get a Professional Energy Audit

A professional energy audit is the most efficient way to identify which physical improvements will have the greatest impact on your ENERGY STAR score. ASHRAE Level I and Level II audits provide progressively detailed assessments of energy-saving opportunities, with estimated savings and payback periods for each measure. For buildings with scores in the 55–70 range — tantalizingly close to certification — a targeted audit often identifies 2–3 high-ROI improvements that, combined, push the score above 75. Get a free energy audit from EnergyStackHub to start identifying your building's specific improvement path.

Step 3: Prioritize High-Impact Improvements

The improvements most likely to meaningfully improve an ENERGY STAR score are those that address the largest energy end-uses in your building type. For most commercial buildings, these are:

• HVAC systems and controls: Scheduling upgrades, setpoint optimization, variable frequency drives on fan and pump motors, and equipment replacements for systems past their service life.
• Lighting: LED retrofit of fluorescent or HID systems. LED conversion typically reduces lighting energy by 50–70% with paybacks of 2–4 years in most commercial buildings.
• Building envelope: Air sealing, insulation upgrades, and window improvements — higher upfront cost but significant long-term impact in climates with extreme heating or cooling demands.
• Plug loads and equipment: Often overlooked, plug load management through power management settings, occupancy-controlled outlets, and equipment replacement can deliver 5–15% whole-building savings.

Maintaining ENERGY STAR Certification: Annual Renewal

ENERGY STAR certification is not a one-time achievement. It must be renewed annually to remain valid. The renewal process follows the same basic structure as the initial certification — updated 12-month energy data, PE verification of the updated data, and a new Statement of Energy Performance submitted to EPA — but is typically faster and less expensive than the initial certification because the relationship with your PE verifier is already established and your building's data systems are already configured in Portfolio Manager.

Best practice for buildings that have achieved certification is to treat energy management as an ongoing operational discipline rather than a certification cycle exercise. Buildings that maintain scores of 80+ have buffer against score fluctuations and are better positioned to renew certification even in years when energy usage is slightly higher than normal due to unusual weather, occupancy changes, or operational disruptions.

Frequently Asked Questions

What ENERGY STAR score do I need to get certified?

A score of 75 or higher in ENERGY STAR Portfolio Manager is required. This is the official EPA threshold and has been the standard for the ENERGY STAR Buildings program since the program's inception. The score is a percentile ranking — a 75 means your building performs better than at least 75% of similar buildings nationally, after adjusting for climate, operating hours, and building type. A score of exactly 75 qualifies; 74 does not. There is no higher tier of certification (unlike LEED, which has Silver/Gold/Platinum levels) — any score of 75 or above earns the same ENERGY STAR certification label.

How much does ENERGY STAR certification cost?

The EPA charges no fee to apply for or receive ENERGY STAR certification. The application is free, Portfolio Manager is free, and annual renewal submissions are free. The primary cost is the third-party verification by a Licensed Professional Engineer (PE), Registered Architect (RA), or equivalent Energy Inspector (EI) recognized by EPA. PE/RA verification fees typically range from approximately $500 to $3,000+ for a single building, depending on market rates for engineers in your area, building complexity, and the number of meters requiring review. Multi-building portfolio engagements often achieve lower per-building costs through economies of scale.

What building types can get ENERGY STAR certified?

ENERGY STAR certification is available for more than 80 eligible space types. Major categories include offices, K–12 schools, colleges and universities, hospitals and medical offices, hotels, multifamily residential buildings, retail stores, supermarkets, warehouses, data centers, courthouses, financial institutions, and houses of worship. Not every space type generates a 1–100 percentile score — some building types receive only an EUI calculation — but any space type that generates a valid score of 75 or above is eligible for the certification label. Check the EPA's current list of eligible space types on the ENERGY STAR Portfolio Manager website.

How long does it take to get ENERGY STAR certified?

The timeline has two phases. First, you need 12 consecutive months of complete energy data in Portfolio Manager — if you are starting from scratch, this is the minimum time before you can apply. If you already benchmark, you may have the data ready now. Once your score is 75 or above and your data is verified, the PE verification step typically takes 2–6 weeks, and EPA typically processes applications within 4–8 weeks after submission. Total time from starting Portfolio Manager to receiving certification: approximately 3–6 months if you already have 12 months of data, or 12–15 months if starting from zero and waiting to accumulate sufficient data.

Does ENERGY STAR certification increase building value?

Multiple peer-reviewed studies and industry analyses have found a positive relationship between ENERGY STAR certification and commercial real estate performance. ENERGY STAR-certified buildings in major markets have been found to command premium rents and transaction prices compared to non-certified buildings of otherwise similar characteristics. The mechanism is direct: institutional tenants increasingly require energy-certified space, lenders recognize certified buildings as lower-risk assets, and the lower operating costs of efficient buildings support higher valuations. The EPA states that ENERGY STAR-certified buildings use about 35% less energy than typical buildings — a cost advantage that flows through to NOI and therefore to capitalized asset value.