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Advice on expanding PV system

  • 01-11-2021 9:59am
    Registered Users Posts: 1,940 ✭✭✭

    A question for the veterans on this forum.

    I have a 7kwp system split over two strings, front house 3kw and shed roof 4kws, both S facing, coupled with a Solis 5G 6kw hybrid and 5kw battery.

    The shed roof is starting to become shaded by the house around this time of the year.

    Firstly, I would like to add 1 more kw to the front house, bringing it to 4kw so 8kw in all.

    I feel like in summer I would be losing some gen since the inverter caps at 6kws but at the same time in summer I exported between 150-400kws per month so I couldn't use it anyway.

    Looking at these options so maybe you guys can keep me straight:

    1. Just expand the front house to 4kws and leave all as is (maybe go for diy batteries next year)
    2. Add another 4kw inverter and split the shed string into 2 x 2kws strings
    3. Add another 4kw inverter and split the shed string into 2 x 2kws strings, move the front house 3kws to the back of the house and add 4kws to the front (11kw total), split the front/back of house into two strings on the 6kw hybrid