What Is an Energy Savings Calculator?
An Energy Savings Calculator is a tool that helps you quantify the financial benefits of upgrading to a more energy-efficient appliance. By comparing the annual operating costs of an old device versus a new one, you can see a clear picture of your potential savings. This free calculator empowers you to make informed purchasing decisions and identify which appliances are having the biggest impact on your monthly utility bills.
Last updated: November 8, 2025
How to Use This Calculator
Get instant, accurate results with our free energy savings tool. Just follow these steps:
- Enter Your Electricity Cost: Find your cost per kWh on your utility bill.
- Detail Your Current Appliance: Input its wattage and average daily hours of use.
- Detail the New Appliance: Enter the wattage and usage for the new, efficient model you're considering.
- Click "Calculate Savings": Instantly see a comparison of annual costs and your potential savings.
Understanding Your Energy Savings
- Current Annual Cost: The estimated amount you are currently spending per year to run your old appliance.
- New Annual Cost: The estimated amount you will spend per year to run the new, more efficient appliance.
- Potential Annual Savings: The difference between the two, representing the money you could save each year after upgrading. This helps you determine the payback period for your new purchase.
According to ENERGY STAR, replacing older appliances with new, energy-efficient models can save households hundreds of dollars per year on their utility bills.
Example Savings Calculation
This example compares an old 1990s refrigerator to a new Energy Star model.
| Input | Old Appliance | New Appliance |
|---|---|---|
| Appliance Wattage | 700 W | 200 W |
| Hours Used Per Day | 8 hours | 8 hours |
| Energy Rate | $0.17 / kWh | |
| Estimated Annual Cost | ~$349 | ~$99 |
| Annual Savings | ~$250 | |