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Energy pay-back time and CO2 emissions of PV systems

โœ Scribed by E. A. Alsema

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
148 KB
Volume
8
Category
Article
ISSN
1062-7995

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โœฆ Synopsis

The energy requirements for the production of PV modules and BOS components are analyzed in order to evaluate the energy pay-back time and the CO 2 emissions of grid-connected PV systems. Both c-Si and thin ยฎlm module technologies are investigated. Assuming an irradiation of 1700 kWh/m 2 /yr the energy pay-back time was found to be 2 . 5ยฑ3 years for present-day roof-top installations and 3ยฑ4 years for multi-megawatt, ground-mounted systems. The speciยฎc CO 2 emission of the rooftop systems was calculated as 50ยฑ60 g/kWh now and possibly 20ยฑ30 g/kWh in the future. This leads to the conclusion that in the longer term grid-connected PV systems can contribute signiยฎcantly to the mitigation of CO 2 emissions.

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