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Marco Raugei Energy pay-back time: methodological caveats and future scenarios Progress in Photovoltaics: Research and Applications 21

Article first published online: 12 JAN 2012 | DOI: 10.1002/pip.1249

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Owing to the way the energy pay-back time (EPBT) of photovoltaics (PV) is operationally defined, a changing grid mix may result in severely limited reductions, or even possible increases in the EPBT of PV, despite improvements in PV technologies. Thus, EPBT may not provide the best indication of performance improvements in PV systems. Thus, it would be advisable to complement or possibly even replace EPBT with a different performance indicator having an absolute, rather than comparative, meaning.

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