Open AccessA simplified methodology for estimating solar spectral influence on photovoltaic energy yield using average photon energy
Author(s) -
Ishii Tetsuyuki,
Otani Kenji,
Itagaki Akihiko,
Utsunomiya Kenji
Publication year - 2013
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.3
Subject(s) - photovoltaic system , solar energy , photon energy , yield (engineering) , energy (signal processing) , photon , computational physics , statistics , environmental science , mathematics , physics , optics , engineering , electrical engineering , thermodynamics
Nowadays, investors, customers, and even suppliers focus on the bankability of photovoltaic ( PV ) technologies. However, few studies have investigated the annual net effect of solar spectrum. In this study, we estimate the net effect of the solar spectrum on the annual energy yield of c‐Si and a‐Si modules by two parameters. One parameter is a direct calculation from spectral factor ( SF ). The other parameter uses average photon energy ( APE ) and a regression line or curve. The estimations by the two parameters are quite consistent, whereas there is 1.2% difference between the estimations at most. Therefore, APE would be a useful index to quantify the effect of the solar spectrum.