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
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.
Key differences
| Solar System Sizing Calculator | Solar Inverter Sizing Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 4 | 4 |
| Result | Required System Size (kW) | Recommended Inverter Size (W AC) |
| 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. | 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. |