Editing Embodied energy (section)

==History==
The history of constructing a system of accounts that records the energy flows through an environment can be traced back to the origins of [[accounting]]. As a distinct method, it is often associated with the [[Physiocrat]]'s "substance" theory of value,<ref>{{cite book |first1=Philip |last1=Mirowski |title=More Heat Than Light: Economics as Social Physics, Physics as Nature's Economics |url=https://books.google.com/books?id=rmVhZnHId-oC&pg=PA154 |year=1991 |publisher=Cambridge University Press |isbn=978-0-521-42689-3 |pages=154–163}}</ref> and later the agricultural energetics of [[Sergei Podolinsky]], a Russian physician,<ref>{{cite book |first1=J. |last1=Martinez-Alier |title=Ecological Economics: Energy Environment and Society |publisher=Basil Blackwell |year=1990 |isbn=978-0631171461 |url-access=registration |url=https://archive.org/details/ecologicaleconom0000mart }}</ref> and the ecological energetics of [[Vladmir Stanchinsky]].<ref>{{cite book |first1=Douglas R. |last1=Weiner |title=Models of Nature: Ecology, Conservation, and Cultural Revolution in Soviet Russia |url=https://books.google.com/books?id=b8_2PvhwnO8C&pg=PA70 |year=2000 |publisher=University of Pittsburgh Press |isbn=978-0-8229-7215-0 |pages=70–71, 78–82}}</ref>

The main methods of embodied energy accounting that are used today grew out of [[Wassily Leontief]]'s [[input-output model]] and are called ''Input-Output Embodied Energy analysis''. Leontief's input-output model was in turn an adaptation of the [[Neoclassical economics|neo-classical]] theory of [[General equilibrium theory|general equilibrium]] with application to "the empirical study of the quantitative interdependence between interrelated economic activities".<ref>{{cite book |first1=W. |last1=Leontief |title=Input-Output Economics |publisher=Oxford University Press |year=1966 |page=134 }}</ref> According to Tennenbaum<ref>{{Cite thesis |last=Tennenbaum |first=Stephen E. |title=Network Energy Expenditures for Subsystem Production |type=MS |url=http://www.esnips.com/doc/ac5215f1-e91d-4c30-8648-2eee1f31488c/Network_Energy_Thesis.pdf |year=1988 |docket=CFW-88-08 |oclc=20211746 |url-status=dead |archive-url=https://web.archive.org/web/20070930190108/http://www.esnips.com/doc/ac5215f1-e91d-4c30-8648-2eee1f31488c/Network_Energy_Thesis.pdf |archive-date=2007-09-30 }}</ref> Leontief's Input-Output method was adapted to embodied energy analysis by Hannon<ref>{{cite journal |first1=B. |last1=Hannon |title=The Structure of ecosystems |journal=Journal of Theoretical Biology |volume=41 |issue=3 |pages=535–546 |date=October 1973 |doi=10.1016/0022-5193(73)90060-X |pmid=4758118 |bibcode=1973JThBi..41..535H |url=http://urizen-geography.nsm.du.edu/~psutton/Sutton_Courses/Geog_3890_Ecological_Economics/SeminalEEpapers/B_HannonStructureOfEcosystems.pdf }}</ref> to describe ecosystem energy flows. Hannon's adaptation tabulated the total direct and indirect energy requirements (the ''energy intensity'') for each output made by the system. The total amount of energies, direct and indirect, for the entire amount of production was called the ''embodied energy''.