I’m looking at two pumps, First Pump, AC Voltage, runs at 110 watts , yearly wattage 963,600 equals 936.6 kW Times 0.15 per Kilowatt Equals $144.54 per year run cost. Second Pump DC Voltage, runs at 26 watts, yearly wattage 227,760 equals 227.76 kW Times 0.15 per Kilowatt Equals $34.16 per year run cost. This is 24 hours times 365, equals 8,760 run hours in a year.