Updates to ENERGY STAR scores with CBECS data

For most types of commercial buildings, the 1–100 ENERGY STAR score is based on the Commercial Buildings Energy Consumption Survey (CBECS), which is conducted about once every four years by the Energy Information Administration (EIA). New CBECS data will be available in early 2016, when EIA releases the results of its 2012 survey. Once EPA has access to the CBECS 2012 data, we will conduct extensive analyses to begin the process of updating our existing ENERGY STAR scores.

During this process, EPA will also update the source energy conversion factors used in all ENERGY STAR score models. Therefore, the ENERGY STAR score for every property in Portfolio Manager may change when EPA releases the updates. There is no way to forecast the change in score for any particular property or property type. 

We will keep everyone informed of our analytical findings during the upgrade process and provide ample notice prior to the release to ensure that in-process ENERGY STAR certifications and other reporting/recognition efforts are not affected.

Release Date

The tentative release date for all updated scores is 2018. Releasing the updated scores at one time will ensure that mixed use buildings experience only one change, and allow EPA to take advantage of economies of scale during the update process.

Learn more

EPA is hosting a series of webinars to keep you informed and gather your input throughout the process of updating the 1 – 100 ENERGY STAR scores. All webinars will be publicly announced, recorded, and available to watch at any time on the ENERGY STAR training portal. 

In addition to hosting 2 webinars every year on the overall process, status of analysis, and anticipated changes, EPA will host webinars focusing on the individual ENERGY STAR scores being updated with CBECS 2012 data. 

The slides for and recordings of completed webinars are available below, as well as a listing of upcoming presentations that will be announced roughly one month before broadcast.

Tell us what you think!

EPA is always open to input and questions related to score development.  Reach out to us via the ENERGY STAR buildings help desk if you have any questions, observations, or recommendations. We are particularly interested in hearing about:

  • Changes in the market over the last 10-15 years
  • Factors that have the greatest impact on energy use in your building(s)
  • New variables you hope EPA will analyze with the CBECS 2012 data (or would like EIA to start collecting with the next survey)
  • Research findings or experience with the existing ENERGY STAR scores

List of 1-100 ENERGY STAR scores and data sources

The table below provides a quick overview of each 1 – 100 ENERGY STAR score’s data source and most recent update. Most of the scores rely on data from CBECS. EIA was unable to publish the 2007 CBECS; therefore, many of the scores still rely on data from prior CBECS.

Space Type

Release Date

Source of Data

Collection Date(s)

Data Center

2010

EPA Survey

2008/2009

Hospital

2001

2011

Industry Survey

Industry Survey

1997

2008

Hotel

2002

2009

Industry Survey

CBECS

1999

2003

K-12 School

2000

2004

2009

CBECS

CBECS

CBECS

1995

1999

2003

Medical Office*

2004

CBECS

1999

Multifamily Housing

2014 Industry Survey 2011

Office

1999

2004

2007

CBECS

CBECS

CBECS

1995

1999

2003

Residence Hall/Dormitory*

2004

CBECS

1999

Retail Store

2007

CBECS

2003

Senior Care Community

2011

Industry Survey

2008/2009

Supermarket

2001

2008

CBECS

CBECS

1992 & 1995

1999 & 2003

Warehouse

2004

2009

CBECS

CBECS

1999

2003

Wastewater Treatment Plant*

2007

Industry Survey

2004

Worship Facility

2009

CBECS

2003

*Not eligible for ENERGY STAR certification