Solar Panel Calculator
System size, panel count and payback from your electricity bill.
Start from what you actually use. This works out the system that would cover it, how many panels that is, how much roof they need, and roughly when it pays for itself.
What you use
Your roof
The system
—system
- Electricity to cover—
- System size—
- Panels—
- Roof area needed—
- Generation a year—
- Bill saved a year—
- Installed cost—
- Payback—
- Over 25 years—
- CO₂ avoided a year—