Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Solar Inverter Sizing Calculator
Determines the right inverter size for a solar array by factoring in panel capacity, orientation, climate, and DC:AC ratio. Use this when designing or auditing a rooftop or ground-mount solar system.
Fill in the required fields to see your result.
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.
Key differences
| Solar Inverter Sizing Calculator | Solar System Sizing Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 4 | 4 |
| Result | Recommended Inverter Size (W AC) | Required System Size (kW) |
| What it does | Determines the right inverter size for a solar array by factoring in panel capacity, orientation, climate, and DC:AC ratio. Use this when designing or auditing a rooftop or ground-mount solar system. | 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. |