Photovoltaic panels that have been used for 40 years

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4 FAQs about Photovoltaic panels that have been used for 40 years

Who makes photovoltaic solar panels?

This photovoltaic module was manufactured by Arco Solar in 1979. Installed on my Vermont roof in 1980, it has been exposed to the weather for 40 years. Photo courtesy of Karyn Patno. I purchased and installed my first solar electric panel—technically known as a photovoltaic module—in 1980.

How old is a solar panel?

Now that the solar panel is 40 years old—significantly older than the presumed lifespan of a PV module—it is time to once again bring the panel down to the ground for another round of testing. Here's the short version of the test results: The solar panel's electrical output has measurably declined.

How long does a solar panel last?

Those tests revealed that after 30 years, the PV module was exceeding its original factory specifications. Now that the solar panel is 40 years old—significantly older than the presumed lifespan of a PV module—it is time to once again bring the panel down to the ground for another round of testing.

When was the first solar panel installed?

I purchased and installed my first solar electric panel—technically known as a photovoltaic module—in 1980. The PV module, an Arco model 16-2000, was rated at 33 watts. Installed on the roof of my house in Vermont, the panel has been exposed to the weather for 40 years.

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