Building Energy Benchmarking

Energy Benchmarking is the process of tracking a building's annual energy use and using a standard metric to compare the building's performance against past performance and to its peers nationwide. Benchmarking improves our understanding of energy consumption patterns; helps identify energy saving opportunities within a portfolio of buildings; and manages business bottom line through consistent data collection and tracking.

Building owners are required to benchmark the energy use of their nonresidential buildings 50,000 square feet and greater in the county in ENERGY STAR Portfolio Manager, and report it to the County for public disclosure.  

See an interactive map of benchmarked buildings in the County and key data metrics here .


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Reporting Link for Calendar Year 2020 Data

The submission deadline for all covered buildings (50,000 sq. ft. and greater) is Tuesday, June 1, 2021.

To get started, please review DEP’s step-by-step guidance on submitting a successful 2020 benchmarking report.

If your property had an average physical occupancy less than 50% throughout 2020, you may opt to file a waiver application and can do so any time between now and May 1, 2021.

The EPA also has COVID-19 related guidance for adjusting property use details in ENERGY STAR Portfolio Manager and pursuing ENERGY STAR certification if your property has been affected.

Reporting Revisions to Previous Years' Benchmarking Reports: If you need to amend your prior years' benchmarking report, please use these reporting links. If you have older data to submit or update, please contact for the reporting link:

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Summary of the Benchmarking Law

In May 2014, the Montgomery County adopted a  Building Benchmarking Law ( PDF, 580 KB) and amended the original legislation by  Bill 35-15 Environmental Sustainability – Benchmarking – Amendments in November 2015, which requires the County and building owners to:

  • Benchmark the energy use of their nonresidential buildings 50,000 square feet and greater in the county in ENERGY STAR Portfolio Manager,
  • Have those data verified by a Recognized Data Verifier the first year and every three years thereafter, and
  • Report data to the County annually for public disclosure.

The County has led by example by benchmarking its buildings first by June 2015. The first deadline for private buildings was June 2016. The  Department of Environmental Protection (DEP) is responsible for the implementation of this law.

Download the Montgomery County Benchmarking Brochure: Building Energy Benchmarking Law: What you need to know about the law and how to get started ( PDF, 1.1 MB).


Benchmarking Help

Stay Up to Date on Benchmarking News

Sign-up for the Commercial Energy News, a newsletter that includes all of the Benchmarking Law updates, as well as Commercial PACE financing news, green building news, and commercial energy events.


Upcoming Office Hours

DEP is available virtually to answer all of your benchmarking questions! Please email to schedule a call and screen-sharing session to help walk you through any benchmarking needs.


Word collage of benchmarking and energy terms