ENERGY STAR Rating Development Process

To assist data center operators in capturing the financial and environmental benefits of improved energy efficiency in their facilities, EPA is developing an ENERGY STAR rating for data center infrastructure. To develop the rating, EPA collected data on energy use and operating characteristics from a large number of existing data centers, including both stand-alone facilities as well as data centers located in office and other types of buildings. The data collection began in March 2008 and ended June 15, 2009 when all participants had submitted at least 12 months of data. Click here for a copy of the data collection form Excel used by participants. Below is a copy of the presentation given by EPA at the beginning of the data collection effort, which provides additional background and details on the project.

  • March 2008 Overview Presentation PDF (243KB) - PowerPoint providing background on the ENERGY STAR Rating for Data Centers initiative, including background, methodology, and timeline.

Over 120 data centers submitted complete data, and EPA is finalizing the rating model, with an anticipated release date of June 2010 in EPA's online benchmarking tool, Portfolio Manager.

The presentations and recordings of recent webinars in which EPA presented results of the rating development are provided below. If you are interested in finding out more about the rating model, please contact us at

  • November 12 Webinar Presentation PDF (219KB) — Overview of the proposed model for data center infrastructure, including the data elements required in the final draft model.
  • November 12 Webinar Recording — Listen to the recording and view the presentation of the slides above that took place November 12, 2009.
  • September 29 Webinar Presentation PDF (239KB) — Overview of the preliminary results of the data collection initiative, including a review of data elements considered for inclusion in the final rating model.
  • September 29 Webinar Recording — Listen to the recording and view the presentation of the slides above that took place September 29, 2009.

EPA would like to thank the following organizations for their participation and continued support of this initiative:

365 Main Inc.
7x24 Exchange
ADP Inc.
AFCOM Northern California Chapter
Critical Facilities Round Table
Data Center Operations Council (Corporate Executive Board)
Enterprise Rent-A-Car
Fidelity Investments
Hill Environmental Operations
JCPenney Company, Inc.
Jones Lang LaSalle

King County, Washington
Lockheed Martin
Lowe's Companies, Inc.
Mobile Satellite Ventures
New York Life Insurance Company
Principal Financial Group
Raritan Inc.
Rothstein Kass
ServerVault Corp.
The Boeing Company
The Green Grid
The Uptime Institute and Site Uptime Network
United Parcel Service
UnitedLayer, LLC

For more information, please contact us at