Home Energy Savings Calculator
Estimate home energy savings from three common upgrades. Every assumption below is editable and sourced, so change any number to match your home.
- Runs on your device
- No watermark
- Free, no signup needed
- Available offline
Where the numbers come from
How to use it
- Enter your numbers.
- Results update instantly.
- Adjust any value to compare scenarios.
Questions
How much does a smart thermostat save?
ENERGY STAR says certified smart thermostats save about 8% on heating and cooling bills. Heating and cooling are close to half of a typical home energy bill, so that is roughly 3–4% of the whole bill.
How much do LED bulbs save?
LEDs use up to 90% less energy than incandescent bulbs (U.S. Department of Energy). Swapping ten 60 W bulbs used 3 hours a day for 9 W LEDs saves about 560 kWh a year, close to $95 at $0.17 per kWh.
Do smart plugs save money?
A little, by cutting standby power. Berkeley Lab puts standby at 5–10% of home electricity, with about a fifth of it avoidable, so savings are small but the plugs are cheap.
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