This technology has been used by the different countries to save the traditional use of agricultural land and rooftop of the building. This paper has been studied the different methods used by the different countries. The main purposes of this studied are:(i) to save the agricultural land (ii) to reduce the greenhouse gases in order to have a clean environment sustainable for all the living beings of our planet and (iii) to provide electricity at the off-grid areas including along the coastal belt of Bangladesh. The novelty of this research paper is to see the preparation technology and the cost analysis of the PV floating system. From the study it is shown that most of the developed countries have been developed FPV (Floating Photovoltaic) system to reduce carbon dioxide emission and getting the green energy. It is also shown that this FPV technology is becoming popular day by day. This study will also show the guide line for use the FPV system at the off-grid areas people across the globe.