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 .


Explore More About Benchmarking:


Reporting Link for Calendar Year 2019 Data

Please use the yellow-highlighted link below to submit your calendar year 2019 building energy benchmarking report to DEP. The submission deadline for all covered buildings (50,000 sq. ft. and greater) is Monday, June 1, 2020.

Reminder about Data Verification Requirements
If you first reported your building’s data verification information with CY 2016 data by the 6/1/2017 deadline, you will need to complete and report updated data verification information for CY 2019 data by 6/1/2020. This would include most Group 2 buildings between 50,000 and 250,000 square feet. Visit the  data verification section of our site for more information. 

**Calendar Year 2019 Reporting Link for All Covered Buildings 50,000 Square Feet and Greater**

This link will take you to the ENERGY STAR Portfolio Manager account log-in screen—after logging in, you’ll see step-by-step instructions on the Data Request page.

Reporting Revisions to Previous Years' Benchmarking Reports: If you need to amend your prior years' benchmarking report, please use these reporting links

Click Dropdowns to Learn More about Benchmarking:



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