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    Any downside to oversize an inverter? 5kw Solis for 3.7kwp

    As the title says any major downsides? I want to fit further panels in 2 years so I am going for a 5kw Solis hybrid inverter for 3.7kwp connected in serie. Thanks.
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    10% difference between two identical system - possible causes? please help figure out

    Hope someone can be so kind to read my post, look at the below data and provide me some opinion in the matter. My neighbour and I both have 10 x 410w panels fitted to a hybrid 5kw Solis inverter. Both roofs are identical, houses are paralel and basically 2-3 meters from each other. Same panels...
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    Grid-shifting with a couple DC battery. What's average %loss?

    I'd like to hear what it is the average % loss gridshifting with a couple dc battery and a hyrbrid inverter. Let's say a Solis and few Pylontech battery. I always heard and read 20%. Is that correct? Is there a lot of variable to go up to 20%? I guess the biggest variable which I could think of...
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    Advise me which size of battery I should go for? (Please!)

    Considering getting a battery but dont know which size would suit me best. My choices are a 3.2kw or a 6.9kw (or anything in between). I have a 4kw system (in panels) and an EDDI diverter to the hot water tank. In Irelnd, we have loads of days where you get sun, clouds, rain, so a battery...
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    Any way to see if all the panels are connected and working from the voltage or any other number?

    I have 10 fitted 5 days ago but i can see the outputs expected (compared to similar system next to me) so I am not doubting myself whether all the panels have been connected or any is faulty. Any way to check this between having someone in the roof with a tool?
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    Tiago optimizers or not? Please read below

    I have 10 x 410w panels in a South facing roof installed 5 days ago. I see that the chimney (and tv aerial) shades one to two panels after 14.30 or so. Would it be worthy my time/money to fit two tiago optimizers in those two panels? They are going for 80eur fitted each. 01-oct-23 Photo 1...
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