K.E. KNAPP, T.L. JESTER, "An Empirical Perspective on the Energy Payback Time for Photovoltaic Modules", Solar 2000 Conference, Madison, Wisconsin, June 16-21, 2000, 6 pages.
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Titre : K.E. KNAPP, T.L. JESTER, An Empirical Perspective on the Energy Payback Time for Photovoltaic Modules, Solar 2000 Conference, Madison, Wisconsin, June 16-21, 2000, 6 pages.

Auteur : Karl E. Knapp, Ph.D. (1)
Auteur : Theresa L. Jester (2)

Adresse : (1) Energy & Environmental Economics, Inc. - 353 Sacramento Street, Suite 1700 - San Francisco, CA 94111
Lien : mailto:karl@ethree.com

Adresse : (2) Siemens Solar Industries - 4650 Adohr Lane - Camarillo, CA 93011
Lien : mailto:terry.jester@solar.siemens.com

Source : Solar 2000 Conference, Madison, Wisconsin.
Date : June 16-21, 2000
Pages : 1 of 6
Lien : private/KNAPP1.pdf - 54 Ko, 6 pages.
Vers : Bibliographie

Energy payback time is the energy analog to financial
payback, defined as the time necessary for a photovoltaic
panel to generate the energy equivalent to that used to
produce it. This research contributes to the growing
literature on net benefits of renewable energy systems by
conducting an empirical investigation of as-manufactured
photovoltaic modules, evaluating both established and
emerging products.
Crystalline silicon modules achieve an energy break-even in
a little over three years. At the current R&D pilot production
rate (8% of capacity) the energy payback time for thin film
copper indium diselenide modules is between nine and ten
years, and in full production is just under two years. Over
their lifetime, these solar panels generate nine to seventeen
times the energy required to produce them. Energy content
findings for the major materials and process steps are
presented, and important implications for current research
efforts and future prospects are discussed.



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