Sustainability · Defined
Source energy
An energy measure that includes energy used upstream to produce and deliver the energy consumed at a building.
Why it matters
Its conversion factors depend on the reporting method. A site-energy reduction does not translate one-for-one into source-energy or emissions reductions.
In practice
A project example
A fuel-switching comparison uses the same source-energy methodology for both the existing and proposed systems.
Technical references
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.