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Solar PV Performance Thread - Post your monthly output

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  • Administrators, Computer Games Moderators, Sports Moderators Posts: 32,161 Admin ✭✭✭✭✭Mickeroo


    July: 191.7kWh
    August: 397.8kWh
    September: 299.1kWh
    October: 226.1kWh
    November: 72.5kWh
    December: 66.9kWh
    January: 89.0kwh

    3.7kWp S/SW facing


  • Registered Users Posts: 88 ✭✭Winterman1234


    December Values, South East, 2.4kwp, Donegal

    (Predicted Gen - 40kWh)

    Actual Gen - 26kWh
    Grid Consumption - 211kWh
    Hot Water Eddi - 6.9kWh
    Lowest Daily Gen on the 2nd- 0kWh
    Highest Daily Gen on the 6th- 3.3kWh

    January Values, South East facing, 2.4kwp,Donegal

    (Predicted Gen - 50kWh)

    Actual Gen - 52kWh
    Grid Consumption - 197kWh
    Hot Water Eddi - 17kWh
    Export - 3.8kWh ( lost due to eddi response time, maintaining balance )
    Lowest Daily Gen (4 different days) - 0.2kWh
    Highest Daily Gen on the 19th - 4.4kWh


  • Registered Users Posts: 88 ✭✭Winterman1234


    irishchris wrote: »
    2.88kwp SW

    January generation: 107.7kwh

    Is it OK to ask what area of country your located, that's a great output figure for a 2.8kwp system


  • Registered Users Posts: 6,815 ✭✭✭Alkers


    Alkers wrote: »
    2.52kWp south facing, Dublin city, installed Dec 12th.
    December total 58.4kWh
    January total 82.6kWh
    Highest - Jan 9th (7.9kWh)
    Lowest - Jan 20th (0.6kWh)

    My previous figures have been questioned, do these look off?


  • Registered Users Posts: 3,170 ✭✭✭irishchris


    Is it OK to ask what area of country your located, that's a great output figure for a 2.8kwp system

    I'm based in Galway. System is South West facing and is 2.88 Futura panels in a goodwe 2.5 inverter.
    Doesn't really start producing until 11ish each day for to orientation but although was clear start to the month, last few days have been poor production. Attached the monthly outputs since it was installed mid october


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  • Registered Users Posts: 427 ✭✭Geeyfds53573


    irishchris wrote: »
    I'm based in Galway. System is South West facing and is 2.88 Futura panels in a goodwe 2.5 inverter.
    Doesn't really start producing until 11ish each day for to orientation but although was clear start to the month, last few days have been poor production. Attached the monthly outputs since it was installed mid october

    Regional Galway had a good solar month so


  • Registered Users Posts: 6,074 ✭✭✭championc


    championc wrote: »
    3.6kw South Facing - South Dublin - 22 deg slope - 10kWh LiFePO4 Batteries
    Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

    January Generated - 75kWh
    February Generated - 121.55kWh
    March Generated - 200.59kWh
    April Generated - 279.11kWh
    May Generated - 396.34kWh
    June Generated - 264.13kWh
    July Generated - 261.88kWh
    August Generated - 254.10kWh
    September Generated - 268.62kWh
    October Generated - 151.43kWh
    November Generated - 90.4kWh
    December Generated - 56.47kWh
    2020 ANNUAL GENERATION - 2.41MWh

    January Generated - 56.14kWh / Consumed - 372.69kWh / Imported - 377.05kWh / Exported - 3.07kw / Eddi - 4.3kw / Zappi 0kw
    Batteries - Charged 221.2kw / Discharged 194.63kw (87.99%)

    Meter Readings 02977 (00705 Day / 02272 Night)


  • Registered Users Posts: 6,815 ✭✭✭Alkers


    irishchris wrote: »
    I'm based in Galway. System is South West facing and is 2.88 Futura panels in a goodwe 2.5 inverter.
    Doesn't really start producing until 11ish each day for to orientation but although was clear start to the month, last few days have been poor production. Attached the monthly outputs since it was installed mid october

    Is that from the "solar as a service" provider?


  • Registered Users Posts: 6,074 ✭✭✭championc


    Alkers wrote: »
    January total 82.6kWh
    Highest - Jan 9th (7.9kWh)
    Lowest - Jan 20th (0.6kWh)

    My previous figures have been questioned, do these look off?

    At this time of year, I have 2.7kWp due to shading caused by the row of houses behind me. I'm in Ballinteer. I've only generated 54kWh and my best days were pretty much equal on both 9th and 21st with 5.3kWh. However, my roof slope is shallow at 22 deg


  • Registered Users Posts: 3,170 ✭✭✭irishchris


    Alkers wrote: »
    Is that from the "solar as a service" provider?

    Yes installed by them in October


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  • Registered Users Posts: 6,815 ✭✭✭Alkers


    irishchris wrote: »
    Yes installed by them in October

    I am the same and my outputs have been queried as possibly being over optimistic also. I have a physical unit counter display (can't remember terminology) on my fuse board which under reads my app by a couple of % but is close enough for me to trust the figures I have. Awaiting an electricity bill to see the difference there.


  • Registered Users Posts: 3,170 ✭✭✭irishchris


    Alkers wrote: »
    I am the same and my outputs have been queried as possibly being over optimistic also. I have a physical unit counter display (can't remember terminology) on my fuse board which under reads my app by a couple of % but is close enough for me to trust the figures I have. Awaiting an electricity bill to see the difference there.

    Yes checked mine the first month too and figures were the same. Almost identical in myenergi app too with myenergi understating output by about 2kw.

    Which part of the country are you in? Just wondering could it be differing solar hours in areas or the inverter/panels just being quiet efficient.
    Either way I'm fairly happy with setup and hoping my self install when finalised is as good lol


  • Registered Users Posts: 6,815 ✭✭✭Alkers


    irishchris wrote: »
    Yes checked mine the first month too and figures were the same. Almost identical in myenergi app too with myenergi understating output by about 2kw.

    Which part of the country are you in? Just wondering could it be differing solar hours in areas or the inverter/panels just being quiet efficient.
    Either way I'm fairly happy with setup and hoping my self install when finalised is as good lol

    I'm in Dublin, roof is due south with a decent pitch on the roof so near-optimal setup.


  • Registered Users Posts: 861 ✭✭✭tails_naf


    January Stats
    6.4kWp (4.5 SSE, 1.9 WSW) , 4.8kWh battery, Eddi, dumb electric car charger – Tipperary

    Generation – 163 kWh
    Export – 1.5 kWh
    Divert – 29 kWh
    Import – 709 kWh

    Best day - 23rd, 14.3 kWh
    Worst day - 11th, 0.6kWh

    Totals so far:
    November - 163kWh
    December - 117kWh
    January - 163kWh


  • Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


    DrPhilG wrote: »
    December Stats
    6.2kWp (2.8 south/3.4 west), 4.8kWh battery, Zappi & Eddi – Donegal

    Generation – 68.3kWh
    Export – 0.3kWh
    Import – 855.4kWh

    January Stats
    6.2kWp (2.8 south/3.4 west), 4.8kWh battery, Zappi & Eddi – Donegal

    Generation – 100.6kWh
    Export – 3.7kWh
    Import – 710.9kWh

    Best day - 24th, 8.4kWh
    Worst day - 19th, 0.5kWh


    Totals so far:
    August - 572.1kWh
    September - 437.2kWh
    October - 254.3kWh
    November - 106.4kWh
    December - 68.3kWh
    January - 100.6kWh


  • Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


    Considerable bump from December to January. My predicted numbers were actually the same for each month, 86.8kWh.

    December I only hit 79% of target, January I got 116%.

    February prediction is 207.2kWh so will need a considerable increase again. From a daily average of 2.8 I'm now targeting 7.4.


  • Registered Users Posts: 287 ✭✭uphillonly


    South Dublin 6 kW system.
    South: 2.8 kw - 7 x LG 410w Bifacial
    East: 3.2 kw - 8 panels
    5.8 kWh Solax battery, Solax 5.0kW hybrid inverter.
    4 Tigo Optimisers.
    Zappi - not prioritised for divert at the moment as house battery has only maxed at 35% charge so far.

    Installed 4 Dec 2020.
    December 2020 total generation: 63.4 kWh
    Jan 2021: 78.5 kWh
    Export: 0.3 kWh.
    Highest day: 23rd, 5.7 kWh
    Lowest day: 20th, 0.4 kWh

    East panels haven’t received any direct sunlight yet due to shading, probably about a month away from sun being high enough. Their max output peaked at 544w in the shade, compared to 2,108w on the south panels in sunlight.


  • Moderators, Sports Moderators Posts: 18,745 Mod ✭✭✭✭slave1


    4.1kWp, single string, roof mounted SW facing with heavy tree shading

    Generated 88.6kWh
    Eddi 18.0kWh
    Exported 5.8kWh

    Highest was 6.3kWh mid month.

    The export figure is a bit annoying but it is made up of modest amounts each day, looks like it's micro events between the Eddi kicking in to divert my excess.

    Bringing a second string on shortly, 3.3kWp NE facing so anticipating a stronger February.
    Wrote to council on tree height so letting that play it's course

    My stuff for sale on Adverts inc. outdoor furniture, roof box and EDDI

    My Active Ads (adverts.ie)



  • Registered Users Posts: 6,074 ✭✭✭championc


    slave1 wrote: »
    The export figure is a bit annoying but it is made up of modest amounts each day, looks like it's micro events between the Eddi kicking in to divert my excess.

    Have you an Export Margin set. I reduced mine to Zero, and my export is now down to 3kw


  • Moderators, Sports Moderators Posts: 18,745 Mod ✭✭✭✭slave1


    championc wrote: »
    Have you an Export Margin set. I reduced mine to Zero, and my export is now down to 3kw

    No, I'm replacing some of my equipment to handle higher panel output so will look at that setting

    My stuff for sale on Adverts inc. outdoor furniture, roof box and EDDI

    My Active Ads (adverts.ie)



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  • Registered Users Posts: 78 ✭✭Aibreann


    October 2020 139.2kWh (10 days of generation)
    November 2020 176kWh
    December 2020 145.6kWh
    January 2021 219.7kWh

    99% self consumption

    7kW system SSE Galway 11.4kWh battery, Eddi, Zappi


  • Registered Users Posts: 1,412 ✭✭✭denismc


    2.08kWp South facing, Cork

    January 107 kWh


  • Registered Users Posts: 861 ✭✭✭tails_naf


    denismc wrote: »
    2.08kWp South facing, Cork

    January 107 kWh

    Thats really good for 2kwp


  • Registered Users Posts: 602 ✭✭✭handpref


    5.4kwp east west split

    January - 33kw’s. Shocking


  • Registered Users Posts: 3,956 ✭✭✭mp3guy


    denismc wrote: »
    2.08kWp South facing, Cork

    January 107 kWh

    Yeah this is spectacular. Must be 45 degree pitch with zero shadowing?


  • Registered Users Posts: 380 ✭✭pjordan


    Near Westport, 4.6 kw system, facing South.

    January total generation: 128.3 kWh
    Best day 20th Jan 10.0 kWh
    Worst day 15th Jan: 0.2 kWh


  • Registered Users Posts: 13 Daharmaster


    Aibreann wrote: »
    October 2020 139.2kWh (10 days of generation)
    November 2020 176kWh
    December 2020 145.6kWh
    January 2021 219.7kWh

    99% self consumption

    7kW system SSE Galway 11.4kWh battery, Eddi, Zappi

    I am looking at increasing an existing 3kW system to 7kW. Just wondering what the sizing basis for the 11.4 kW battery? What battery type?


  • Registered Users Posts: 13 Daharmaster


    January Stats
    3.08kWp (SSE Cork ), Immersun, Nov 2014 installation

    Generation – 143kWh, 46.6 kWh/kWp, best jan figures since install
    Export – 1.5 kWh
    Divert – 8 kWh
    Import – 1360 kWh (heat pump 982.6 kWh)

    Best day - 23rd, 9.93 kWh
    Worst day - 12th, 0.92 kWh


  • Registered Users Posts: 1,470 ✭✭✭MAULBROOK


    I am looking at increasing an existing 3kW system to 7kW. Just wondering what the sizing basis for the 11.4 kW battery? What battery type?

    I would go for a BYD battery, its expandable with modules of 3.5kw.
    They have an output of just over 3kw.

    https://www.zerohomebills.com/product/byd-battery-box-l-14-0-kw-with-victron-multiplus-ii-48-3000/


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  • Registered Users Posts: 548 ✭✭✭idc


    January 4.65 kWp (2.17 SE, 2.48 SW) North Dublin
    83.8 kWh generated
    0.47 kWh exported
    327.41 kWh imported

    Best Day 23rd - 6.3 kWh
    Worst 20th Day - 0.5 kWh

    PV generation 65% of projection (shading effects SW array)


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