TrimWatt
Data sourced from the U.S. Dept. of Energy, Energy Star, and the EIA.

Energy Bill Calculator

Estimate your yearly electricity cost and potential savings. Drag the sliders — your result updates instantly, no email required.

$220
2,000
17¢
2

Upgrades = smart thermostat, LED, insulation, heat pump… each trims estimated usage.

ESTIMATED ANNUAL COST
≈ $2,640
Possible yearly savings
≈ $320
roughly 12% lower
Rounded estimate — free, no sign-up, nothing collected.

Estimate, not a guarantee.Rounded for guidance. Your figures depend on your home, local rates, and usage.

How we calculate this

Formula: Annual cost ≈ the average of (your bill × 12) and that figure adjusted for home size and local rate. Savings = annual cost × the modelled reduction for the number of upgrades selected (capped at 34%).

Assumptions:

  • Your monthly bill is representative of the year, not a single peak month.
  • The home-size adjustment is anchored on a 2,000 sq ft baseline.
  • Each upgrade contributes a typical reduction drawn from DOE / Energy Star guidance — not a measured result for your home.

Limits: It cannot see your meter, your appliances, or your climate zone. Treat it as a ballpark for prioritising where to look, not a prediction of next year's bill.

Sources: U.S. Energy Information Administration · U.S. Department of Energy

Related guides

Frequently asked questions

How accurate is this energy bill calculator?

It gives a solid estimate from your bill, home size, and local rate using average usage patterns. For an exact figure, request the detailed breakdown, but the on-screen result is a reliable ballpark.

Do I need to enter an email?

No. Your estimate appears instantly, and the calculator collects nothing at all — there is no email field and no data is stored.

How we frame itCostSavingsPaybackConfidenceNext step