Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Appliance Energy Cost Calculator
Calculate the true annual electricity cost of any appliance using its wattage, daily usage hours, days per week, your electricity rate, and the number of units. Essential for budgeting solar or identifying energy hogs.
Annual running cost
262.08 $/yr
$100-300/yr marks a major load like a space heater or old fridge. The $262 example heater costs about $22/month; cutting use 2 h/day would save around $90/yr.
Annual cost scales directly with watts, runtime, and rate; the US average residential rate is about $0.16/kWh, the basis of the verified $262/yr example for a 1500 W heater run 3 h/day.
Net Metering Calculator
Estimate your monthly solar bill under time-of-use net metering. Enter your production, usage, peak/off-peak rates, and connection fee to see exactly what you owe or earn back.
Key differences
| Appliance Energy Cost Calculator | Net Metering Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 6 |
| Result | Annual running cost ($/yr) | Monthly Net Metering Credit/Cost ($) |
| What it does | Calculate the true annual electricity cost of any appliance using its wattage, daily usage hours, days per week, your electricity rate, and the number of units. Essential for budgeting solar or identifying energy hogs. | Estimate your monthly solar bill under time-of-use net metering. Enter your production, usage, peak/off-peak rates, and connection fee to see exactly what you owe or earn back. |