Spectral modeling and spectral impacts on the performance of mc-Si and new generation CdTe photovoltaics in warm and sunny climates

•SMARTS + satellite method led to good results for field IV curve spectral correction.•CdTe showed spectral factors of up to 10% for Northern and 2% for Southern Brazil.•Average spectral factor for mc-Si in Florianópolis showed 2% spectral losses.•SMARTS + satellite data method yielded good irradiance-weighted averaged SF results.