Find out how many solar panels your home needs
Accurate calculation based on your address, roof orientation, and solar activity. Try it for free.
Your roof's solar potential
Our calculator estimates your home’s solar potential from satellite data: panel placement, energy production, and savings — in just a few clicks.
Annual Savings
See how much you can save on electricity bills in the first year.
Solar Potential
We use NASA/Google data to estimate solar radiation in your region.
Number of Panels
We automatically calculate how many panels fit on your roof.
Payback Period
See how many years it will take for your investment to pay off.
Try it now
Find your home and see the calculation
- 1
Choose address
Or place a point on the map
- 2
Data analysis
We calculate solar activity and roof area
- 3
Ready calculation
See payback and required equipment
Full report — free
- Financial analysis: savings, payback period, installation cost
- PDF report to discuss with your installer
- Configuration comparison
- Satellite sunshine heatmaps of your roof
Frequently Asked Questions
How much does the calculation cost?
The calculation is completely free, including the full report: financial analysis, sunshine heatmaps and a PDF. You only need to sign up.
What data do I need for the calculation?
Just provide your home address. We determine the rest automatically using satellite images.
How accurate are the calculations?
The margin of error is less than 10%. We use up-to-date solar activity data from NASA and precise satellite maps.
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Ready to start?
Enter your address and get a free calculation