A Review Study About Photovoltaic Systems and the Energy Payback Time Calculation For Selected Modules

The renewable energy can be utilized to satisfy the energy demand. moreover, the solar energy as the most abundant energy resource among renewable energies plays a crucial role to provide the energy demand. the bipv (building integrated photovoltaics) systems can be considered to supply the required energy demand from renewable sources. the essential advantage of bipv systems is that they can be utilized as building component such as roof, window, shading systems and building façade and they can generate electricity simultaneously. even though the photovoltaic technologies have been improved within past few years, however the utilization of the bipv systems will be considered expensive. for this reason, the payback period calculation is considered a vital parameter in evaluating the bipv systems. in this study, the overall energy consumption for producing one m^2 of a mono-crystalline photovoltaic module is calculated 1334 kwh. additionally, the photovoltaic module data for three companies were investigated and the annual energy productions for one m^2 of each company’s product were obtained. the results showed that the average energy payback time for 270 and 280 watt modules are 5.565 and 5.254 respectively. moreover, the energy payback time for 290, 325 and 340 watt modules were calculated 4.903, 5.437 and 4.965 respectively.