An Excel-based tool is provided that allows calculation of total energy
use for a site, such as an industrial site, that uses multiple fuels, and
multiple conversions are needed.
Additional links are provided on the source energy conversion factors from the
US EPA EnergyStar program in August 2009. In addition, an NREL report on
US data on emission factors for buildings and additional data on source energy
can be found in the document having a similar-named link below.