Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Home Battery Sizing Calculator
Size a home battery bank for backup from the daily load you want to protect, your desired days of autonomy, usable depth of discharge, round-trip efficiency, and a reserve margin.
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.
Key differences
| Home Battery Sizing Calculator | Solar Battery Backup Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 4 |
| Result | Battery capacity needed (kWh) | Required Battery Capacity (kWh) |
| What it does | Size a home battery bank for backup from the daily load you want to protect, your desired days of autonomy, usable depth of discharge, round-trip efficiency, and a reserve margin. | 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. |