Waterer Electricity Savings Calculator Heater Type Climate Customization ¢ per kWh (Kilowatt Hour) 10 Adjust the slider to reflect your current cost, in cents, per kilowatt hour (kWh). The national average is currently $.12 per kWh. Number of Years To Be Used 5Number of Waterers In Use 1 This is How Much Money You Will Throw Away HEATING YOUR WATER!!! Total $