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Discuss PV Panel - Output Deterioration in the Solar PV Forum area at ElectrciansForums.co.uk.

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  1. DefyG
    Offline

    DefyG Regular EF Member

    Location:
    South East
    Hi all,

    Looking at a project whereby client wishes to use some second hand (approx. 8 years old) panels, inverter etc. he has acquired from a demolished property.

    Before getting subbies in to quote on re-installing them I am wondering your opinion on the output of the panels as someone has suggested (not on here) that an older panel may not be as efficient as a new one today of equivalent size? Could this be the case? If so would the cost of replacing them out weigh any benefit gained by re-using panels (especially if the addition output is minimal)!

    They were also retro fitted to an existing roof and it has been suggested that they be re-installed flush with the roof tiles. Again views on this please, is it possible?

    Cheers

    Cheers
     
  2. TJ Anderson
    Offline

    TJ Anderson Forum Mentor

    Location:
    Derby
    When I started to install that stuff 10 years ago IIRC correctly I remember for a panel to be MCS approved, part of the criteria was that it could lose upto 10% over 20 years. Dirt and bird crap is more of an issue lol as most roof mounted systems never get cleaned!!
     
  3. Gary K
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    Gary K Regular EF Member

    Location:
    norwich
    I assume that he is not considering claiming the FIT(if it still exists)?
     
  4. spinlondon
    Offline

    spinlondon Forum Mentor

    Location:
    Harlow Essex
    Could he claim FIT, if the building is a gym?
     
  5. Wilko
    Offline

    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
  6. DefyG
    Offline

    DefyG Regular EF Member

    Location:
    South East
    Tell me about it, the amount of s.....t Red Kites around here produce is amazing!!![​IMG]
    Living under the 'flight path'!!

    Thanks for the article, of course would all be tested and maybe best to recommend new panels in any case as they deteriorate in time.
    System all purchased in good faith as 'working' but of course we've all been there!!
     
    • Like Like x 1
  7. Gary K
    Offline

    Gary K Regular EF Member

    Location:
    norwich
    I assume so as there are plenty of companies around with panels on but not if he is purchasing second hand panels as I believe there has to be a paper trail from purchasing new
     
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