The Building Energy Asset Score

The Building Energy Asset Score

The U.S. Department of Energy’s Building Energy Asset Score (Asset Score) is a national standardized tool for assessing the physical and structural energy efficiency of commercial and multifamily residential buildings. The Asset Score generates a simple energy efficiency rating that enables comparison among buildings, and identifies opportunities to invest in energy efficiency upgrades. It is available for voluntary use and is 100% free to use


  • Create a tool that removes some of the cost barriers to doing this type of analysis
  • Help users identify opportunities to invest in energy efficiency

Energy Star Portfolio Manager:

  • looks at operations and energy bills and structural assets of the building

Building Energy Asset Score:

  • Only looks at the physical building envelope and major energy related systems
  • Then asking: how efficient was this building constructed and how can I improve it

The tools are complimentary – Asset Score is going one layer deeper and tells you what you can do relating to the EE of the buildings


While the tenants and energy usage patterns within a building frequently change, its physical structure and major equipment remain mostly constant. These underlying energy “assets” – such as the building envelope (roof, walls and windows) and lighting, hot water and HVAC systems – have a significant impact on how efficiently energy is used within a building regardless of how the building is operated or the behavior of its occupants.

The DOE Building Energy Asset Score (Asset Score) assesses the energy efficiency of these assets and identifies opportunities for improvement. Using building information inputted by the user, the tool runs a sophisticated whole-building energy simulation and generates an Energy Asset Score Report that includes the following actionable information:

  • A score ranging from 1 to 10 based on the energy efficiency of the building envelope and the mechanical, electrical, and service hot water systems
  • An energy efficiency assessment of the building’s individual systems
  • Total estimated building energy usage and energy use by end use (lighting, heating, cooling, service hot water) under standard operating conditions
  • Opportunities to upgrade building efficiency, and a “potential” energy efficiency score based on identified upgrades


Use Cases

The Asset Score can be used for new construction projects and existing buildings with the following commercial and residential uses:

Office Library
Retail Lodging
Multifamily Medical office
Assisted living Parking garage
City hall Police station
Community center Post office
Courthouse Senior center
Educational (including K-12 schools) Warehouse (unrefrigerated)
House of Worship Mixed-Use (of the above types)


Value for Users

The Asset Score is intended for use by a diverse group of stakeholders, including building owners, third-party property and facilities managers, energy services companies and consultants, utility program administrators, architects, building engineers, and state and local governments. The Asset Score can create value for each of these stakeholders in distinct ways:

  • Building owners and third-party management companies can use the Asset Score to guide energy improvements, demonstrate national sustainability leadership and corporate social responsibility, and ensure the market recognizes their investments in building energy efficiency regardless of tenant behavioral impacts.
  • Energy services companies, engineers and green building consultants can leverage the Asset Score to enhance their proprietary services and engage new customers, and integrate their tools seamlessly with the Asset Score through an application programming interface.
  • State and local governments can identify energy cost-saving opportunities in their own portfolios and make that information transparent and accessible to taxpayers.
  • Utilities and utility program administrators can use Asset Score results to identify customers for energy efficiency rebates and help achieve their energy efficiency targets more quickly and cost-effectively.


Get Involved

DOE is actively seeking Asset Score users. Individuals or organizations that use, or commit to use, the Asset Score on one or more buildings by spring 2015 will receive national recognition from the DOE Office of Energy Efficiency and Renewable Energy, as well as technical support using the tool. Building owners and managers, energy services providers, architects, engineers, utilities, and other parties are encouraged to participate. For more information, contact Andrew Burr.

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