The pumps discussed here are primarily intended for solar-direct use at 24 Volts rather than 12 Volts. There is no problem using the. . DC powered pumps are used for deep and shallow well pumping, stock tanks, irrigation, water pressure systems, and many other areas. Its advantages are low cost and a. . So in the USA, your electric pump is either going to be running at 110 volts AC or 220 volts AC. For 220 volts, you can go all the way from a 1/2 horsepower up to around 7 1/2 horsepower. The choice between these voltages depends on the size of the pump.