Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Solar Panel System Calculator
Estimate how many solar panels you need to cover your home's electricity usage based on your location's sun hours and panel specs. Ideal for planning a residential rooftop solar installation.
Fill in the required fields to see your result.
Electrical
Transformer Sizing Calculator
Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems.
Fill in the required fields to see your result.
Key differences
| Solar Panel System Calculator | Transformer Sizing Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 5 |
| Result | Required Solar Panels (panels) | Required Transformer Size (kVA) |
| What it does | Estimate how many solar panels you need to cover your home's electricity usage based on your location's sun hours and panel specs. Ideal for planning a residential rooftop solar installation. | Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems. |