You can count on most photovoltaic solar panels to last 25 years before they begin to noticeably degrade.
30 year lifespan of solar panel.
For instance if you have installed monocrystalline panels you can continue to use them without any issue for more than 25 years.
Most solar panel companies will provide a standard 25 year warranty for the expected life expectancy of the solar panels.
And those are some of the earliest solar panels that were produced.
Technology and design has vastly improved since 1980 so the outlook is great for modern solar panels.
However this doesn t mean that they stop producing electricity after 25 years it just means that energy production has declined by what manufacturers consider to be a significant amount.
One homeowner tested his solar panel from 1980 and found that after being on his roof for 30 years the panel was still performing to factory specs.