Panel degradation- what would you advise?

Surfpath
Surfpath Solar Expert Posts: 468 ✭✭✭
in Off Grid Solar & Battery Systems #1
Neighbors array. ~12 years old. 18 modules. Off grid. Has fairly significant panel browning on all panels. Around 6 have one or two what I would call “hot spots”. See photo. Manufacturer long out of business. It was difficult when I visited to determine actual power loss. Owner believes there has been some loss. 
How much of a concern? Should I return and just help them determine power drop off, which they just have to accept. Or Is this an obvious fire risk, that needs immediate panel removal?
thoughts appreciated.

Outback Flexpower 1 (FM80, VFX3048E-230v, Mate, FlexNetDC) 2,730watts of "Grid-type" PV, 370 AmpHrs Trojan RE-B's, Honda 2000 watt genny, 100% off grid.
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  • 706jim
    706jim Solar Expert Posts: 523 ✭✭✭✭
    #2
    I have a set of ancient Arcos that I purchased in 1994. They were brown then. They still work although output isn't great. Is the neighbour getting enough power from his array for his needs? If so, I wouldn't be concerned. If not buy new panels. They're much cheaper than they were twelve years ago.
    Island cottage solar system with appriximately 2500 watts of panels, 1kw facing southeast 1.3kw facing southwest 170watt ancient Arco's facing due south. All panels in parallel for a 24 volt system. Trace DR1524 MSW inverter which has performed flawlessly since 1994. Outback Flexmax 80 MPPT charge controller four 467A-h AGM batteries. Insignia 11.5 cubic foot electric fridge 1/4hp GSW piston pump. My 31st year.
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