Is it Worth Upgrading | Payback Calculator Energy Efficiency Payback Calculator Find out how long it takes for a new appliance to pay for itself. Select Currency $ US Dollar £ British Pound € Euro R South African Rand KSh Kenyan Shilling ¥ Japanese Yen ₹ Indian Rupee A$ Australian Dollar Cost of New Appliance Old Appliance Power (Watts) New Appliance Power (Watts) Hours Used Per Day Cost per kWh Payback Period 0 Months You save $0.00 per month!