WattDraw Corrects the Appliance Cost Calculator

Field notes

The calculators distinguish nameplate power from estimated duty-cycle operation, a distinction illustrated by the refrigerator example: 420 kWh annually at a 32% duty cycle versus 1,314 kWh under continuous operation. The site applies the method across 123 appliances and 51 state electricity-rate tables, and includes a bill-breakdown workflow based on entered kilowatt-hours and selected household devices. Its guides explain standby load, seasonal heating and cooling changes, and other common sources of high bills.