Estimate how much you could save on energy bills before you upgrade.
Use practical calculators for solar, heat pumps, and other home-energy upgrades built for U.S. homeowners. Compare scenarios, review clear assumptions, and get closer to the real numbers before you talk to installers.
No signup required. Start with the numbers you already know.
See the biggest savings levers before you ask for quotes.
Compare a few practical scenarios and see how install cost, incentives, and utility bills can change the outcome.
Solar panels
Payback + first-year bill savings
Heat pumps
Install cost + recovery timeline
Bill scenarios
Before-and-after monthly comparisons
What changes the answer?
Upfront cost
System or install price after incentives
Utility bills
Current spending and future rate changes
Home specifics
Climate, equipment, and time in the home
Solar Payback Calculator
Estimate net upfront cost after incentives, first-year savings, and how long solar may take to pay for itself.
Explore tool →Solar Savings Calculator
Compare a typical U.S. electric bill with an estimated post-solar bill and project longer-term savings.
Explore tool →Heat Pump Savings Estimator
Model annual heating and cooling savings, net install cost, and recovery timeline for a heat pump upgrade.
Explore tool →Quick estimate
See a fast solar payback estimate
Start with three key numbers for a quick U.S. homeowner estimate. The result below still uses default assumptions for bill reduction, utility-price growth, and years in home, so open the full calculator if you want to adjust everything.
Quick estimate
6.9 years
Net upfront cost: $12,600
First-year savings: $1,836
Uses default assumptions for bill reduction and utility-price growth. Use the full calculator for a more specific scenario.
Open full calculator