Performance analysis of a multi crystalline Si photovoltaic module under Mugla climatic conditions in Turkey

Commercially available, a multi crystalline silicon (mc-Si) photovoltaic (PV) module has been monitored outdoors under Mugla climatic conditions in Turkey. Electricity yield of this module is calculated from the uninterruptible measured current–voltage curves from sunrise to sunset during a year. Calculated electricity yield from the measured plane of array or in-plane (POA) irradiation is compared with the calculated electricity from the manufacturer’s electrical values of the module and the measured electricity from the photovoltaic system consisting 26 mc-Si PV modules from the same manufacturer. Calculated annual energy rating for the PV system is 1415.79 kW h/kW p and 1414.18 kW h/kW p from the manufacturer data and tested module respectively. The measured energy rating value is 1412.78 kW h/kW p. Comparison of results from this study with those obtained from the measurements show that the average difference in monthly electricity values varies between ±12% with an annual average value less than 1% and a performance ratio (PR) of 0.72.

► The electricity yield of one module and a grid connected PV system is compared.
► The average difference in monthly electricity values varies between ±12%.
► Annual average electricity difference is about 0.1% with 0.72 measured PR.
► Annual energy rating for the PV system is calculated about 1414.18 kW h/kW p.
► The measured energy rating is 1412.78 kW h/kW p.