Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Solar Energy
Solar Panel Area Calculator
Calculate the roof or ground area required for a target solar capacity given panel efficiency and local solar irradiance. Use it during early system planning to confirm available space supports the target system size.
Fill in the required fields to see your result.
Solar Energy
Solar Battery Size Calculator
Calculate required battery capacity (kWh) to back up a home for a chosen number of days at a given daily energy usage and battery depth-of-discharge limit. Use it when sizing storage for solar self-consumption, grid-outage backup, or off-grid systems.
Fill in the required fields to see your result.
Key differences
| Solar Panel Area Calculator | Solar Battery Size Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 3 | 3 |
| Result | Required Roof Area (m²) | Required Battery Capacity (kWh) |
| What it does | Calculate the roof or ground area required for a target solar capacity given panel efficiency and local solar irradiance. Use it during early system planning to confirm available space supports the target system size. | Calculate required battery capacity (kWh) to back up a home for a chosen number of days at a given daily energy usage and battery depth-of-discharge limit. Use it when sizing storage for solar self-consumption, grid-outage backup, or off-grid systems. |