Solar energy paper index
Climate-Stratified Evaluation of NASA POWER and PVGIS Solar Irradiance Products and their Propagation into Photovoltaic Yield Uncertainty
One-line summary
A solar energy research paper on Climate-Stratified Evaluation of NASA POWER and PVGIS Solar Irradiance Products and their Propagation into Photovoltaic Yield Uncertainty.
Engineering notes
Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Reliable solar-resource characterisation is essential for photovoltaic (PV) project design, yet satellite and reanalysis products can produce climate-dependent biases that propagate into energy-yield and financial estimates. This study develops a harmonised framework for comparing NASA POWER and PVGIS solar-radiation products across 18 sites representing tropical rainforest (Af), tropical monsoon (Am), tropical savanna (Aw), hot semi-arid (BSh) and hot desert (BWh) climates in Southeast Asia, South Asia and Sub-Saharan Africa. Monthly global horizontal irradiance (GHI), direct normal irradiance (DNI) and diffuse horizontal irradiance (DHI) for 2003-2022 were quality screened, temporally harmonised and evaluated using mean bias error, root mean square error, mean absolute percentage error, Pearson correlation and Willmott’s index of agreement. Dataset-specific irradiance inputs were propagated through a fixed-tilt PV modelling chain comprising irradiance transposition, module-temperature estimation, a five-parameter single-diode model and system-loss derating.
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