Building Energy Benchmarking

In Rockville, buildings and transportation are the largest consumers of energy and the largest generators of greenhouse gas emissions. Becoming more energy-efficient and using green energy sources can not only save money, but help minimize the effects of climate change.

Energy benchmarking is the process of measuring a building’s energy use over time. This allows owners and occupants to understand their building’s energy performance relative to similar buildings and helps identify opportunities to cut energy waste.

Rockville property owners must comply with Montgomery County’s Energy Benchmarking Law:

• Owners of buildings 25,000 square feet or greater, or a group of buildings that share a parcel (have the same Tax ID) that are collectively 25,000 square feet or greater, are required to benchmark energy use in ENERGY STAR Portfolio Manager.
• Data must be verified by a recognized data verifier the first year and every three years thereafter.
• Report data to Montgomery County annually by June 1 for public disclosure.