Building Energy Use Reporting

Energy Use Disclosure Report

The Cambridge City Council passed a Building Energy Use Disclosure Ordinance in July 2014. The ordinance is a key step in efforts to reduce Cambridge's greenhouse gas (GHG) emissions and requires large property owners to track and report annual energy use to the City.

Cambridge reports energy use data for City-owned buildings that contain at least 10,000 square feet of floor area. See links below:


How Data Are Reported


Energy Use report data use the U.S. EPA’s ENERGY STAR Portfolio Manager online management tool to report on energy use intensity (i.e., energy use per square foot), greenhouse gas emissions, and other metrics. Portfolio Manager applies a complex analytic model to compare and rank similar types of buildings across the country and over time by adjusting for differences in weather, climate and use characteristics, such as number of operating hours and number of computers.

K-12 schools and office buildings are eligible for a “benchmarking score” of 1 to 100. A score of 50 means that the building performs better than 50% of similar-type buildings nationwide; a score of 75 indicates better performance than 75% of similar-type buildings nationwide, etc.

ENERGY STAR scores and energy use intensity can be used to compare building performance against a yearly baseline, national medians or similar buildings within a portfolio.

Cambridge Schools

The below chart shows the ENERGY STAR scores for Cambridge K-12 Schools for the 2015 and 2016 calendar years. ENERGY STAR scores are calculated from a number of factors including energy use, building size, and building type. Scores can be used to compare a building's energy efficiency performance over time, against other buildings nationwide or similar buildings within a portfolio. The National and Cambridge median scores for K-12 schools ENERGY STAR scores are included for reference.

Highlights

  • In its first year of operation, the reconstructed Martin Luther King, Jr. (MLK, Jr.) School scored 100, placing it in the highest-performing tier of schools nationwide. Cambridge Rindge and Latin High School has applied for Energy Star certification for its performance above the 75% percentile of schools nationwide.
  • The King Open School is not shown; it was demolished in 2016 and is being rebuilt with a Net Zero Energy design 

School Energy Use Chart

More information about the Building Energy Use Disclosure Ordinance can be found on the Community Development Department’s web page.


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