Study reveals high-altitude limitations in solar irradiance models

Researchers have assessed the reliability of models used to estimate direct and diffuse irradiance from global horizontal irradiance (GHI) data at two sites in southern Peru. The study identifies a systematic, altitude-dependent divergence between the model results and Solargis satellite data, with potential implications for estimating photovoltaic (PV) yields in Andean regions. The study, "GHI-based PV yield assessment in high-altitude Andean sites: workflow performance and systematic limitations of irradiance decomposition models," compares two sites with contrasting climates: Cota Cota, located ...

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