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Solar Electric Panels

JackR
JackR Member Posts: 125
in THE MAIN WALL
I'm doing a little research for a community that is going to do some renovations on town offices and municipal buildings, they are going to be incorporating solar domestic hot water and electric. I had heard somewhere that solar electric panels only give 100% of their output for about 7yrs or so and then re-rate after that down to as low as 40% over time. Is there any validity to this? If so, What is the expected lifetime?

Thanks in advance,

JD

Comments

  • SpeyFitter
    SpeyFitter Member Posts: 422


    PV panels should produce plus or minus 5% of rated output for the 25 year guarentee.

    There was an error rendering this rich post.

  • Unknown
    Unknown
    They,,,

    must be kept clean! Long term accumulation of dirt and grime will reduce their output.
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