Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Solar Energy
Solar Wire Sizing Calculator
Determine the correct AWG wire gauge for any run in your solar array based on current, distance, voltage, and temperature. Use this before purchasing cable to avoid dangerous overheating or efficiency-robbing voltage drop.
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 Wire Sizing Calculator | Solar System Sizing Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 4 |
| Result | Minimum Wire Gauge (AWG) | Required System Size (kW) |
| What it does | Determine the correct AWG wire gauge for any run in your solar array based on current, distance, voltage, and temperature. Use this before purchasing cable to avoid dangerous overheating or efficiency-robbing voltage drop. | 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. |