The agriculture sector nowadays in Palestine relies mostly on conventional energy sources and traditional irrigation ways. Considering some factors such as high costs of fossil fuels and providing new electrical network, especially to remote areas and where grid electricity is either inaccessible or expensive to expand, therefore a solar photovoltaic (PV) powered irrigation system can be a practical choice for irrigating. In this paper, a PV-powered direct-current water pump system design for irrigation is presented, techno-economic feasibility of using solar PV systems for water pumping to replace a diesel engines and electric pumps also is presented. The PVSyst simulation software was used for convenience and monetary issues. Solar PV water pumping is found to be more economically in comparison to diesel or electricity water pumping in rural, urban and remote regions in Palestine. The investment payback for some PV water pumping systems instead of diesel is found to be around 1 year and around 7 years for replacement of electrical conventional pumps