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Relative Low Performance of Domestic PV System
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<blockquote data-quote="Jena" data-source="post: 537627" data-attributes="member: 35891"><p>Bob, Binky and all of the others who have helped, thank you. You might be interested to know that I undertook a thorough search of our loft space this morning, hoping, but expecting, to trace the panel wiring further. The attached images shows what I found. It appears that the string of four panels on our south south east facing roof have not been connected! I couldn’t believe my eyes, but was relieved at the same time. This explains and corresponds to our mathematical estimate of a 40% deficit in power production. There’s always (well nearly always), a silver lining to come out of situations like this. Through the advice you have kindly proffered, I now know how the second string should be connected to the inverter to maximise power output through the second MPPT channel and increase both system resilience and safety. I’ll insist that the installation is completed to achieve this. Thank you to everyone for your thoughts and assistance and sharing my conundrum. Wishing everyone a happy and peaceful Christmas.</p></blockquote><p></p>
[QUOTE="Jena, post: 537627, member: 35891"] Bob, Binky and all of the others who have helped, thank you. You might be interested to know that I undertook a thorough search of our loft space this morning, hoping, but expecting, to trace the panel wiring further. The attached images shows what I found. It appears that the string of four panels on our south south east facing roof have not been connected! I couldn’t believe my eyes, but was relieved at the same time. This explains and corresponds to our mathematical estimate of a 40% deficit in power production. There’s always (well nearly always), a silver lining to come out of situations like this. Through the advice you have kindly proffered, I now know how the second string should be connected to the inverter to maximise power output through the second MPPT channel and increase both system resilience and safety. I’ll insist that the installation is completed to achieve this. Thank you to everyone for your thoughts and assistance and sharing my conundrum. Wishing everyone a happy and peaceful Christmas. [/QUOTE]
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Green Renewable Energy Forum
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Relative Low Performance of Domestic PV System
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