Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Solar Energy
Solar Panel Roof Area Calculator
Estimates how many solar panels fit on a roof section and calculates expected power output, accounting for usable area, tilt, and shading. Ideal for homeowners planning a solar installation.
Fill in the required fields to see your result.
Solar Energy
Solar Panel Savings Calculator
Estimate your annual solar savings and net yearly return after accounting for installation costs and the federal tax credit. Use this when comparing solar quotes or deciding whether rooftop solar makes financial sense for your home.
Fill in the required fields to see your result.
Key differences
| Solar Panel Roof Area Calculator | Solar Panel Savings Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 5 |
| Result | Estimated System Capacity (W) | Annual Net Savings ($) |
| What it does | Estimates how many solar panels fit on a roof section and calculates expected power output, accounting for usable area, tilt, and shading. Ideal for homeowners planning a solar installation. | Estimate your annual solar savings and net yearly return after accounting for installation costs and the federal tax credit. Use this when comparing solar quotes or deciding whether rooftop solar makes financial sense for your home. |