Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Solar System Sizing Calculator
Calculate the solar array size in kilowatts needed to cover a chosen percentage of your electricity usage. Use this before contacting installers to arrive with an informed system size estimate.
Fill in the required fields to see your result.
Solar Energy
Off-Grid Solar System Calculator
Size your off-grid solar system by calculating required solar panels, battery bank, and inverter capacity. Essential for cabins, RVs, or remote installations without grid access.
Fill in the required fields to see your result.
Key differences
| Solar System Sizing Calculator | Off-Grid Solar System Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 4 | 5 |
| Result | Required System Size (kW) | Total System Capacity (W) |
| What it does | Calculate the solar array size in kilowatts needed to cover a chosen percentage of your electricity usage. Use this before contacting installers to arrive with an informed system size estimate. | Size your off-grid solar system by calculating required solar panels, battery bank, and inverter capacity. Essential for cabins, RVs, or remote installations without grid access. |