The electricity generation from photovoltaic systems (PV) is becoming more relevant from year to year in the context of global power generation, with the newly installed capacity exceeding all other forms of generation for ...

Spectral sky radiance (380–760 nm) is derived from measurements with a hemispherical sky imager (HSI)system. The HSI consists of a commercial compact CCD (charge coupled device) camera equipped with a fish-eye lens and ...