Source Energy and Emission Factors for Energy Use in Buildings (Revised)

Research output: NRELTechnical Report


This document supports the other measurement procedures and all building energy-monitoring projects by providing methods to calculate the source energy and emissions from the energy measured at the building. Energy and emission factors typically account for the conversion inefficiencies at the power plant and the transmission and distribution losses from the power plant to the building. Theenergy and emission factors provided here also include the precombustion effects, which are the energy and emissions associated with extracting, processing, and delivering the primary fuels to the point of conversion in the electrical power plants or directly in the buildings.
Original languageAmerican English
Number of pages39
StatePublished - 2007

Bibliographical note

Supercedes June 2006 version.

NREL Publication Number

  • NREL/TP-550-38617


  • energy performance metrics
  • source emissions
  • source energy


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