Ranjit, Sri Gopal creator Lasnier, France Chairperson Bhattacharya, Sribas C. Examination Committee Prida Wibulswas Examination Committee C. E. C Scholarship Donor text series technical report th Bangkok Asian Institute of Technology 1987 continuing eng 72 p. The performance of two BPx47 CF single crystal silicon photovoltaic modules and one SX -2 0, semi crystalline silicon photovoltaic module is described in this research study. The data obtained from the experiment under natural operating conditions is compared with the manufacturer's specification. The data and results obtained from the experiment does not actually concide with the manufacturer's data for all three modules. The efficiencies of the modules of the same size and materials are found to be different. The solar cell equation parameters are determined from the experimental data by using the least square method proposed by APPELBAUM et. al . The temperature effect and the insolation effect on the parameters of the photovoltaic module s are described . It is found that the . parameter values are found to be varied with the temperature and insolation level changes. The measured and calculated values of voltage are found to be almost equal. The I-V curves plotted from the calculated values fit with the measured values indicating acceptable values of the parameters. A research study (9 credits) submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development Research Studies Project Report (M. Eng..) - Asian Institute of Technology, 1987 Solar cells http://203.159.5.9/ait-thesis/detail.php?q=B18999 http://203.159.5.9/ait-thesis/detail.php?q=B18999 261198 20260817172528.0