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NAL Agricultural Thesaurus
U.S. Department of Agriculture
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Concept Breadcrumbs

Fields of Study > physics > energy > energy flow > energy accounting > primary energy
Fields of Study > sustainability science and engineering > industrial ecology > energy flow > energy accounting > primary energy
Natural Resources, Conservation, Environment > environmental sustainability > industrial ecology > energy flow > energy accounting > primary energy
Preferred Term:

primary energy

Definition:
Primary energy should be used to designate those sources that only involve extraction or capture, with or without separation from contiguous material, cleaning or grading, before the energy embodied in that source can be converted into heat or mechanical work.
Concept Schemes:
NALT Full
Broader Concept:
energy accounting
Related Concepts:
Entry Terms:
  • upstream energy
URI:
https://lod.nal.usda.gov/nalt/198472
Download this Concept:
RDF/XMLCreated 2013-04-03, last modified 2013-12-06