Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Climate
Solar Panel Savings Calculator
Estimate your annual savings from going solar based on system size, local sun exposure, installation cost, and available tax credits. Ideal for homeowners comparing solar quotes or planning a residential installation.
Fill in the required fields to see your result.
Climate
Solar Radiation Calculator
Estimate top-of-atmosphere solar irradiance at solar noon for a given latitude, day of year, and solar declination. Returns watts per square metre on a horizontal surface, before atmospheric attenuation.
Fill in the required fields to see your result.
Key differences
| Solar Panel Savings Calculator | Solar Radiation Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 4 | 3 |
| Result | Annual Net Savings After 25 Years ($) | Solar Radiation (W/m²) |
| What it does | Estimate your annual savings from going solar based on system size, local sun exposure, installation cost, and available tax credits. Ideal for homeowners comparing solar quotes or planning a residential installation. | Estimate top-of-atmosphere solar irradiance at solar noon for a given latitude, day of year, and solar declination. Returns watts per square metre on a horizontal surface, before atmospheric attenuation. |