How many years until solar panels pay for themselves?
Estimate2026 figuresFreeNo sign-up
Example: change the values to see your own case
They pay for themselves in
8.8 years
Gain over 25 years
€9,489
In the first year you save about €495.
More options
How we calculated it
Each year adds what you save on the energy you use at home and what you earn from selling the surplus, until the installation cost is covered.
In Portugal, 1 kWp typically produces between 1,300 and 1,700 kWh a year. Replacing the inverter is not included.
Frequently asked questions
How much does a solar panel produce in Portugal?
About 1300 to 1700 kWh a year per kWp installed, depending on the area and orientation.
What is self-consumption?
It is the energy produced that you use at home at that moment. It is worth more than surplus sold to the grid.