Working of a solar water pumping system. The system operates on power generated using solar PV (photovoltaic) system. The photovoltaic array converts the solar energy into electricity, which is used for running the motor pump set. The pumping system draws water from the open well, bore well, stream, pond, canal etc.Most solar water pumps run directly off solar panels (PV direct) and do not require batteries. … Instead of storing electricity in batteries to run the solar pump at non-sunny times, most people prefer to store the water in a holding tank.