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Solar PV Performance Thread - Post your monthly output



  • Registered Users Posts: 5,350 ✭✭✭ championc

    September Stats

    3.9kWp (S), 20kWh battery, 22 deg Slope

    Generation – 241.73 kWh
    Consumed   - 237.71 kWh
    Import     – 65.32 kWh
    Export     – 29.3 kWh
    Eddi       - 1.7 kWh
    Zappi      - 20.5 kWh
    Meter Readings 05341 (01120 Day - up 5 / 04221 Night - up 54) - Gas 6293 (up 25)

    Totals so far:

    Month    |   2020 |   2021 |   2022 |
    January  |     75 |     56 |     81 |
    February |    122 |    142 |    111 |
    March    |    200 |    269 |    370 |
    April    |    279 |    373 |    372 |
    May      |    396 |    430 |    445 |
    June     |    264 |    425 |    425 |
    July     |    261 |    387 |    407 |
    August   |    254 |    264 |    435 |
    September|    268 |    248 |    242 |
    October  |    151 |    185 |        |
    November |     90 |     78 |        |
    December |     56 |     52 |        |
    Total    |   2.41 |   2.90 |   2.88 |

  • Registered Users Posts: 645 ✭✭✭ rgfuller

    11th Month

    Dublin - Lucan - September 22 - 7.12kW total installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

    Total Generation: 449kWh (146kWh consumed directly, 152kWh into battery, 151KWh to grid)

    Best Day: September 4th - 32.0kWh

    Worst Day: September 3rd - 3.0kWh

    Total Consumption: 393kWh (77% Solar: 23% Grid Import (90kWh))

    Milestones & Info:

    43 kWh to Eddi

    7th Month Generation Exceeds Consumption

    2 Days no import :: 6th, 11th

    Passed 5MWh generated this year.

    Monthly Expected FIT €21.14 + Money Saved on Energy from PV :: €73.86 :: Total Savings €95.00 for Sept. (FIT @ 0.14c/KWh)

    Expected FIT since Feb 15th €329.14 :: (24KWh Feb, 254 Mar, 272 Apr, 413 May, 382 Jun, 435 Jul, 440 Aug, 151KWh Sept : Total 2351KWh)

  • Registered Users Posts: 719 ✭✭✭ garbanzo

    Hi fellow Solar folk.

    Figures the month of September with a 4Kw system on an even East : West split based in South Dublin. No battery.

    Total generated: 245kWh

    Highest day:  4th September, 14.2 kWh

    Lowest day: 3rd September 2.48 kWh

    Had a visit from the SEAI guy earlier this week to check the works so expecting the grant to come through in the next 2-3 weeks. 


  • Registered Users Posts: 4,520 ✭✭✭ paulbok

    6.84kWp south facing, Roscommon. 4.8kw battery.

    Sept 2022

    593kWh generated (545 forecast) ,

    (68.1kWh to Eddi )

    (77.6% of total consumption, self produced)

    Total consumption 640kWh. 204kWh discharged from battery. 143 kWh exported

    134kWh imported (no day/night meter, but bulk imported during night, early morning & bad days)

    32.8kWh generated best day (17th Sept)

    5.0kWh generated worst day (27th Sept)

  • Registered Users Posts: 1,618 ✭✭✭ SD_DRACULA

    West Dublin 7kwp S facing 20 kwh battery

    Days without import - 21

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  • Registered Users Posts: 2,275 ✭✭✭ ECO_Mental

    6.1kWp South of Cork City,

    597 kWh generated for September, Used 54% of it and the PV saved me about €100 on my Elec bill

    More importantly I am now have been up an running for 12 months and I have generated 7,000 kWh or 7 Mega Watt Hours over the year (well 6965 kWh but who is going to argue about 35 kWh between friends...😉)

    I was above my predicted generation for nearly every month and this August smashed it.

    Here is my 7 day moving average over the past 11 months (as I don't have full daily data for last October logger was not set up yet) End of March and middle of August were big earners. July was a disappointment.

  • Moderators, Sports Moderators Posts: 17,057 Mod ✭✭✭✭ slave1

    If 322kW is saving you €100 then you should look to switch provider soon...

  • Registered Users Posts: 20 aleesi

    PVGIS predicted 509KWh (for a 6KWp at -30° azimuth SSE with 5KWh batt for now) and I got 444KWh being the worse day 1.2KWh and best 32KWh

    I've imported 29KWh and exported 135KWh.

    While the system delivered 12-13% less than expected I'm overall happy, Eddi took care of the hot water and only had to turn the boiler on a couple of times. The system can handle the 5KWh batt pretty well and I think here is room for another 5KWh at the right price.

  • Registered Users Posts: 20 aleesi

    30cent/kWh (day rate) can't get much better these days.

  • Registered Users Posts: 415 ✭✭ septicsac

    7.8 KW system in Louth for Sept.

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  • Registered Users Posts: 1,156 ✭✭✭ celtic_oz

    6.2Kwp up near the border

  • Registered Users Posts: 4,218 ✭✭✭ Gerry

    263kwh from 4kwh for sept. 60% exported. lot of the best days did not line up with our presence/usage. 220 of that is from 3kwp SW, 43 from 1kwp NE. was a very mixed month , I'm sure a proper September with an indian summer would be well over 300kwh

  • Registered Users Posts: 431 ✭✭ pms7

    Would anyone be able to post their daily production graphs please?

    I want to see the production at the time of day, as I'm looking at solar for a dairy farm where peak demand is 8-10am and 5-7pm. Also orientation, size and if possible an average for a month or some daily ones. Is there any site where you can access this kind of information for a system. Have got approval for feed-in tariff but grant now an option after budget changes. Trying to decide if better to go for grant or feed-in tariff with no grant. Thanks

  • Registered Users Posts: 2,740 ✭✭✭ con747

  • Registered Users Posts: 5,030 ✭✭✭ John mac

    September .. 7.4 east west split .. MAyo

    Best day 08th .. 26.8

    Worst day 20 th 5.8

    total for month 474.40kWh

  • Registered Users Posts: 3,365 ✭✭✭ graememk

    Not dairy, but sheep/cattle

    Is your yard on a connection to the house or its own separate connection?

    The production this time of year in them hours is practically nothing, high summer it's 2-3 kw on a clear day.

    You could consider pre heating your hot water or batteries.

    There is also a Seai grant now for businesses. If the house runs the yard the seai one covers that too (I went that route because it was much simpler) €2400 max grant

    I have 8kwp on a NE/SW shed quite flat, walkable)

    I know with tams your not meant to export but not sure how it's done, likely just an export limit on the inverter... Which could be just turned off when all is passed.

    Pm me and I can get you a link to my monitoring you can look back through the last 2 yrs.

  • Registered Users Posts: 130 ✭✭ sligopaul

    September .. 6.6 south/ south east .. Sligo

    Best day 10th .. 37.8

    Worst day 20 th 4.3

    total for month 521kWh

  • Registered Users Posts: 2,593 ✭✭✭ yankinlk

    I just realised that today marks the first full year of my solar install journey. I got installed on the 7th last year - but i guess it was only a half day so today marks a complete years worth of usage. Am i happy? - over the damn moon.

    I run a Day/Night meter and I load shift as much as possible. Based on my stats with EI since March, the units I am importing are 60% at Night time rate. My 5Kw battery helps here.

    My best month for efficency was actually June. I generated more in August but imported 2 more Kw that month - so June wins. July I was on holidays so i wont count that month - i only imported 26 units. May was pretty much that start of the GREAT production for me but even in March I started seeing a HUGE reduction in energy imprted from the grid.

    My worst month was December - so I added that here for a little taste of reality! :)

    I still have a few trees around the property that are probably limiting my morning production - I think i could easily pass 5mWh in a year but Ill probably leave it for now.

    Would I change anything? 2 actually.

    I could have added 5 more panels on install day - and I may just do that one day. I added an Eddi this year - and I do love it - but if it was a choice between those 5 panels versus an eddi id go with the panels everytime.

    The battery I got was a 5Kw and based on prices today and the "promise" of FIT - i would not bother getting one. However I am happy with the one I got and i couldnt imagine not having one for no other reason than covering the gaps of sunshine from clouds.

    Big thanks to all that helped me get here on this forum!

    I dont have a Graph for the Eddi - but I installed it at the end of April 2022. I have used 455Kw in total since then. I dont have a breakdown between boosts versus free sunshine. If anyone knows how that display works that would be great. That works out at about 3Kw per day. I boost in the mornings instead of using oil from May thru October. Im only starting to swap to oil now that its getting colder. Oil burner was not turned on to heat DHW since I got the eddi installed.

    Post edited by yankinlk on

  • Registered Users Posts: 4,085 ✭✭✭ digiman

    Produced 386kWh in Sept on a 5.6kW system.

    is it possible with Solis to split out the energy you use at night rate and at day rate?

  • Registered Users Posts: 4,520 ✭✭✭ paulbok

    Don't think so. It would be great if they could do hourly bar charts per day, like what they do for the daily/monthly usage.

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  • Registered Users Posts: 631 ✭✭✭ DC999

    Happy birthday :)

    Class. I am only live since late July and very much learning still. Info like this helps me.

  • Registered Users Posts: 1,484 ✭✭✭ MAULBROOK

    Happy pv birthday. Its nice to see that the novelty has not warn off. Next year you can get it 5 extra panels for its second birthday.

  • Registered Users Posts: 176 ✭✭ Curiousness99

    I’m getting envious, I got only 376kWh from a 8.1 kWp system, trees and some hills limiting my morning production

  • Registered Users Posts: 627 ✭✭✭ silver_sky

    4.46kWp SW facing system in North Co. Dublin with 5kWh battery, Eddi, and Zappi car charger.

    October 2022 generation was 273kWh with 67% self-consumption. Worst day was 19th at 0kWh (yes, you read that right) and best was 17th at 18kWh. Self-consumption should be higher but had issues with the Eddi losing signal. I've added an extension aerial a few days ago which seems to be working well so far.

  • Registered Users Posts: 1,848 ✭✭✭ garo

    4.8kW EW Dublin. 10kWh DIY battery

    October 2022 (kWh):

    Production: 225.2 (200 predicted, 221 last year)

    Consumption: 715

    Import: 511 (64d, 447n)

    Export: 21.1

    Best day: 1st: 13.3

    Worst day: 19th: 0.7

  • Registered Users Posts: 5,536 ✭✭✭ Ubbquittious

    Only 96. Bit of a sickner, only another couple hours of sun needed to break the 100

  • Registered Users Posts: 109 ✭✭ curioustony

    Roscommon, 4550Wp, Azimuth: 136° (SE), Slope: 24°

    Worst day is due to a scheduled 8hr power outage (which triggered the fireman switch) -- probably would have been best day. Real worst day should be the 31st @ 1.4 kWh

    Maybe I should stop looking until March!

    Generation down on last year by ~20%

  • Registered Users Posts: 4,520 ✭✭✭ paulbok

    6.84kWp south facing, Roscommon. 4.8kw battery.

    October 2022

    385kWh generated (392 forecast) ,

    (42.2kWh to Eddi )

    (63% of total consumption, self produced)

    Total consumption 610kWh. 173kWh discharged from battery.

    59kWh exported

    236kWh imported (24hr meter)

    27.0kWh generated best day (14th Oct)

    2.0kWh generated worst day (31th Oct) second worst ever day since install in early Jan.

    Post edited by paulbok on

  • Registered Users Posts: 1,363 ✭✭✭ THE ALM

    South Roscommon, 8.16Kwp, facing 210° at 35°, 9.6kWh battery

    Total generation 486.50kWh (up on prediction at 446kWh)

    Consumed 531.2kWh

    Energy from Grid 125kWh (increasing as more charge for the EV needed going into the darker months as can be seen in the spikes for consumption)

    Energy to Grid 61kWh

    To the Eddi 75.1kWh

    To the Zappi 104.20kWh

    To the Battery 236.20kWh

    From the Battery 208.20kWh

    Best day 1st with 33.4kWh

    Worst day 31st with 1.9kWh

    Running about 87% self use.

    Energy exported would have generated €10.98 at Energia FIT rate if on a smart meter, we are D/N.

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  • Registered Users Posts: 11,418 ✭✭✭✭ DrPhilG

    October Stats

    7.44kWp (4.03 south/3.41 west), 20kWh battery, Zappi & Eddi – Donegal

    Generation – 254.5kWh

    Export – 11.1kWh

    Import – 527.8kWh

    Best day – 18th, 20.6kWh

    Worst day - 29th, 1.4kWh

    Days with less than 1kWh purchased - Lol, I'll remove this stat til March...