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Solar PV Performance Thread - Post your monthly output

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    #272
    DrPhilG
    Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


    championc wrote: »
    Have you a link to the predictor ?

    Nothing as swanky as the site Garo linked. My predictions were based on the generated figures by a friend last year. His averages, expanded to my system size and 10% added for higher efficiency equipment and a better direction.

    Predicted 603kWh for August, only managed 572kWh.

    Predicted 430Kwh for September, passed that figure today.


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    #273
    E30M3
    Registered Users Posts: 312 ✭✭E30M3


    DrPhilG wrote: »
    Nothing as swanky as the site Garo linked. My predictions were based on the generated figures by a friend last year. His averages, expanded to my system size and 10% added for higher efficiency equipment and a better direction.

    Predicted 603kWh for August, only managed 572kWh.

    Predicted 430Kwh for September, passed that figure today.

    How do the figures from this tool align with your own estimates Phil?


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    #274
    garo
    Registered Users Posts: 1,874 ✭✭✭garo


    graememk wrote: »
    Oh thats a nice tool!, what GIS database do you use/find more accurate?

    I just use the default. It didn’t make a huge difference which one I used the last time I checked.

    Edit: Let me correct that. I found ERA5 to be closest to my real output.


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    #275
    unkel
    Registered Users Posts: 64,915 ✭✭✭✭unkel


    DrPhilG wrote: »
    Nothing as swanky as the site Garo linked. My predictions were based on the generated figures by a friend last year. His averages, expanded to my system size and 10% added for higher efficiency equipment and a better direction.

    Predicted 603kWh for August, only managed 572kWh.

    Predicted 430Kwh for September, passed that figure today.

    I hope you won't be disappointed next year. I'd say August and September this year in Donegal were far better than average


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    #276
    graememk
    Moderators, Home & Garden Moderators Posts: 5,853 Mod ✭✭✭✭graememk


    unkel wrote: »
    I hope you won't be disappointed next year. I'd say August and September this year in Donegal were far better than average

    weather wise august was decent, but to get a good window of 2-3 good days to cut silage was tough, weather was very broken with a lot of rain.

    Sorta like you'd get a good day and then a wet day.

    Got the barley cut in the last days of aug, then another 2 weeks of broken weather when we finally got some dry weather to dry and bale straw. Ground was still V wet in places.

    August was pretty average, And sept started off poor but finished well.

    April/May/June this year were scorchers, the talk was you didnt want to leave the grass lying too long or it would get TOO dry!.


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    #277
    DrPhilG
    Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


    unkel wrote: »
    I hope you won't be disappointed next year. I'd say August and September this year in Donegal were far better than average

    The predictions are just a rough guide, the real kicker will be the actual savings on the bill.

    I've just got copies of all my old bills back from Energia so I can actually compare month by month from the pre-solar days.


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    #278
    DrPhilG
    Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


    E30M3 wrote: »
    How do the figures from this tool align with your own estimates Phil?

    Haven't had a chance to play with that site yet. Doesn't seem too mobile friendly and it's not that often I'm on a PC with time to spare.


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    #279
    MAULBROOK
    Registered Users Posts: 1,470 ✭✭✭MAULBROOK


    South East direction in north Wexford.
    6.2kw Solar

    August 588.9kw
    Best day, Aug 11th 35.6kw
    Worst Day Aug 19th 4kw.

    September 605.8kw.
    Best day Sep 26th 28.9kw
    Worst day Sep 2nd 6.1kw

    Will not post usage as we were out of the house a lot of weeks over the past 2 months and it would not be relevant.
    The ESB GOT A LOT OF FREE POWER OF ME OVER THE PAST 2 MONTHS. AHHHHHHHHH FECK IT


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    #280
    mun1
    Registered Users Posts: 827 ✭✭✭mun1


    mun1 wrote: »
    august 2020
    3.7kw S/SW, 12 panels (8 south 35deg, 4 West vertical)

    Total generated 324kWhr
    Power bought from grid 188kWhr
    Solar power to grid 106 kWhr
    Monthly self use rate 64%

    Sept 2020

    Total generated 301 kWh
    Power bought from grid 274kWhr
    Solar power to grid 51kWhr
    Monthly self use rate 78%[/QUOTE]


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    #281
    E30M3
    Registered Users Posts: 312 ✭✭E30M3


    5.6 KW Arrays South East
    4.2 East / 1.4 West
    Best Day 9th September 25.3
    Worst Day 2nd September 5.7

    First full months production here
    475.6 KWH or 15.85 average per day


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    #282
    DrPhilG
    Registered Users Posts: 12,221 ✭✭✭✭DrPhilG


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

    Generation – 437.2kWh
    Export – 59.9kWh
    Import – 201.4kWh

    Eddi - 40.6Kwh
    Zappi - 59.3kWh

    Best day - 19th, 25.7kWh
    Worst day - 22nd, 4.7kWh

    My imported usage was down considerably, mainly because I managed to charge the car for free at public stations a few times during the month.

    Export down to 60kWh from 147kWh last month too.


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    #283
    garo
    Registered Users Posts: 1,874 ✭✭✭garo


    garo wrote: »

    August(kWh):
    Production: 424 (462 predicted)
    Consumption: 544 (512 pred.)
    Import: 230 (131d, 99n) (203 pred.)
    Export: 110 (153 pred.)

    Best day: 8th: 26.7
    Worst day: 16th: 2.7


    4.8 kWp E/W. 2.4kWh battery. 24 degree slope.


    September(kWh):
    Production: 357 (335 predicted)
    Consumption: 541 (496 pred.) Consumption numbers going to be off from now due to EV purchase.
    Import: 227 (128d, 131n) (254 pred.)
    Export: 43 (93 pred.)

    Best day: 13th: 18.2
    Worst day: 30th: 3.7


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    #284
    championc
    Registered Users Posts: 6,074 ✭✭✭championc


    championc wrote: »
    January Generated - 75kw
    February Generated - 121.55kw
    March Generated - 200.59kw
    April Generated - 279.11kw
    May Generated - 396.34kw
    June Generated - 264.13kw
    July Generated - 261.88kw
    August Generated - 254.10kw

    3.6kw South Facing - South Dublin - 22 deg slope - 16.8kWh Lead-Acid Batteries
    Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

    September Generated - 268.62kw / Consumed - 376.79kw / Imported - 167.81kw / Exported - 20.86kw / Eddi - 38kw / Zappi 2.8kw
    Batteries - Charged 140.41w / Discharged 105.43kw

    Meter Readings 01503 (00391 Day / 01112 Night)


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    #285
    Winterman1234
    Registered Users Posts: 88 ✭✭Winterman1234


    Winterman1234 wrote: »
    August Values, South East facing 2.4kw,Donegal

    Generation- 225kWh (Beating both June and July)
    Grid Consumption - 98kWh
    Hot Water Eddi - 86kWh
    Lowest Daily Gen on the 4th - 1.1kWh
    Highest Daily Gen on the 12th - 13.6kWh

    September Values, South East facing 2.4kw,Donegal

    Generation - 153kWh
    Grid Consumption - 98kWh
    Hot Water Eddi - 51kWh
    Lowest Daily Gen on the 22nd - 0.6kWh
    Highest Daily Gen on the 19th - 11.1kWh


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    #286
    Winterman1234
    Registered Users Posts: 88 ✭✭Winterman1234


    championc wrote: »
    3.6kw South Facing - South Dublin - 22 deg slope - 16.8kWh Lead-Acid Batteries
    Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

    September Generated - 268.62kw / Consumed - 376.79kw / Imported - 167.81kw / Exported - 20.86kw / Eddi - 38kw / Zappi 2.8kw
    Batteries - Charged 140.41w / Discharged 105.43kw

    Meter Readings 01503 (00391 Day / 01112 Night)

    Really interesting to see your battery stats charge vs discharge. Can the solis/pylontech lithium batteries provide this data


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    #287
    championc
    Registered Users Posts: 6,074 ✭✭✭championc


    Winterman1234 wrote: »
    Really interesting to see your battery stats charge vs discharge. Can the solis/pylontech lithium batteries provide this data

    I have to add up a daily total for each of these two items each month. But there's so much data captured.


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    #288
    Gazzler82
    Registered Users Posts: 65 ✭✭Gazzler82


    SE Cork 3kw

    191.2kWh


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    #289
    rx8
    Registered Users Posts: 1,826 ✭✭✭rx8


    4.2kwp E/W facing, Dublin North City.

    Generated - 262.6kwh
    Imported - 161kwh
    Exported - 58.5kwh
    I-boost- 35kwh
    Best days- 3rd and 13th- 12.9kwh
    Worst day- 30th - 2.8kwh.

    Pretty bad month tbf. Imported figures went up as I added nearly 40kwh to the car on the 27th, but the majority is on night rate anyway.


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    #290
    garo
    Registered Users Posts: 1,874 ✭✭✭garo


    I am Dublin North city E/W too. You best and worst days match mine but my per kW production was higher than yours. The slope of the roof and the exact E/W orientation must be slightly different. I got 17.8 and 18.2 on the 3rd and 13th with a 2.4/2.4 E/W 100/280 degree split.


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    #291
    championc
    Registered Users Posts: 6,074 ✭✭✭championc


    rx8 wrote: »
    4.2kwp E/W facing, Dublin North City.

    Generated - 262.6kwh
    Imported - 161kwh
    Exported - 58.5kwh
    I-boost- 35kwh
    Best days- 3rd and 13th- 12.9kwh
    Worst day- 30th - 2.8kwh.

    Pretty bad month tbf. Imported figures went up as I added nearly 40kwh to the car on the 27th, but the majority is on night rate anyway.

    Have you looked at your yield / generation per string ? And look at the yield per string vs the volume of panels on each


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    #292
    Mickeroo
    Administrators, Computer Games Moderators, Sports Moderators Posts: 32,160 Admin ✭✭✭✭✭Mickeroo


    3.72kwp, SW facing, Connaught

    July: 191.7kWh (logging only started on the 17th)
    August: 397.8kWh (first full month with the system)
    September: 299.1kWh


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    #293
    rx8
    Registered Users Posts: 1,826 ✭✭✭rx8


    garo wrote: »
    I am Dublin North city E/W too. You best and worst days match mine but my per kW production was higher than yours. The slope of the roof and the exact E/W orientation must be slightly different. I got 17.8 and 18.2 on the 3rd and 13th with a 2.4/2.4 E/W 100/280 degree split.

    My panels are not equally split. I've 1.8kw on the front East facing and 2.4kw on the rear West facing. That's probably why we have a difference Although I notice you have more panels than I do too.I'd say I'm more like ESE / WNW facing, as the sun is definitely on the rear panels for a lot more of the day.


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    #294
    MAULBROOK
    Registered Users Posts: 1,470 ✭✭✭MAULBROOK


    rx8 wrote: »
    My panels are not equally split. I've 1.8kw on the front East facing and 2.4kw on the rear West facing. That's probably why we have a difference.

    I think opemizers would help production.
    Just got them and i have seen an improvement


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    #295
    rx8
    Registered Users Posts: 1,826 ✭✭✭rx8


    MAULBROOK wrote: »
    I think opemizers would help production.
    Just got them and i have seen an improvement

    I'd say that it's just because September was such a ****ty month tbh. I'll keep an eye on it and see how things go going forward.


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    #296
    MAULBROOK
    Registered Users Posts: 1,470 ✭✭✭MAULBROOK


    rx8 wrote: »
    I'd say that it's just because September was such a ****ty month tbh. I'll keep an eye on it and see how things go going forward.

    Or the sunny south east is paying off for me.
    605kw was a monster return for Sep.


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    #297
    garo
    Registered Users Posts: 1,874 ✭✭✭garo


    rx8 wrote: »
    My panels are not equally split. I've 1.8kw on the front East facing and 2.4kw on the rear West facing. That's probably why we have a difference. I'd say I'm more like ESE / WNW facing, as the sun is definitely on the rear panels for a lot more of the day.


    Yes that would explain it. In the shoulder months, tilt, orientation, split can all have outsized impact.


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    #298
    phester28
    Registered Users Posts: 453 ✭✭phester28


    September 2020
    KWh: 143.2 Estimated 144 so almost bang on
    Location: Cork City
    KWP: 2.4
    Split string: 1.5:0.9KWp E/W

    My West is doing better than my east per meter of panel.


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    #299
    Ballylad
    Registered Users Posts: 156 ✭✭Ballylad


    September 2020
    5.04kw SSE facing, 4kw inverter, 4yrs old.
    Kwh generated: 493.7


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    #300
    jimmyging
    Registered Users Posts: 203 ✭✭jimmyging


    MAULBROOK wrote: »
    Or the sunny south east is paying off for me.
    605kw was a monster return for Sep.

    Indeed it was maulbrook , I could only manage 588kw with my 6.2 system .


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    #301
    Rzeznik
    Registered Users Posts: 38 ✭Rzeznik


    Drogheda, West facing, 2,48kW

    Generation:
    Aug'20: 220,4kWh
    Sep'20: 186,4kWh
    Oct'20: 110,4kWh


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