Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Solar Battery Backup Calculator
Determines how many kilowatt-hours of battery capacity you need to keep essential appliances running during a grid outage. Use it when sizing a home battery bank paired with a solar array.
Fill in the required fields to see your result.
Solar Energy
Solar Battery Storage Calculator
Find the battery bank capacity (in amp-hours) needed to power your home for a set number of backup days. Use this when designing an off-grid system or adding storage to a grid-tied solar setup.
Fill in the required fields to see your result.
Key differences
| Solar Battery Backup Calculator | Solar Battery Storage Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 4 | 4 |
| Result | Required Battery Capacity (kWh) | Required Battery Capacity (Ah) |
| What it does | Determines how many kilowatt-hours of battery capacity you need to keep essential appliances running during a grid outage. Use it when sizing a home battery bank paired with a solar array. | Find the battery bank capacity (in amp-hours) needed to power your home for a set number of backup days. Use this when designing an off-grid system or adding storage to a grid-tied solar setup. |