Solar PV Performance Thread - Post your monthly output

Mr Q · 01-09-2022 12:53pm

August was my first full month since I finished the install. 4kW East and 4kW West, both at about 18 degrees. Based in the South East.

995kWh generated. 665kWh exported, I have a big DIY battery but need to finish setting it up and installing it.

1st of August was the lowest with 14.3kWh and the 9th was the best with 44.7kWh

rgfuller · 01-09-2022 2:53pm

10th Month

Dublin - Lucan - August 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: 797kWh (200kWh consumed directly, 157kWh into battery, 440KWh to grid)

Best Day: August 9th - 37.0kWh

Worst Day: August 26th - 12.1kWh

Total Consumption: 417kWh (87% Solar: 13% Grid Import (54kWh))

Milestones & Info:

33 kWh (approx.) to Eddi

6th Month Generation Exceeds Consumption

8 Days no import :: 1-5th (on holiday), 12, 13, 21

Passed 5MWh generated since install last October.

Monthly Expected FIT €61.60 + Money Saved on Energy from PV :: €88.49 :: Total Savings €150.09 for August.

Expected FIT since Feb 15th €308.00 :: (24KWh Feb, 254 Mar, 272 Apr, 413 May, 382 June, 435 July, 440KWh August : Total 2200KWh)

kabakuyu · 01-09-2022 2:56pm

2.5 kwp system facing south Galway City, just had my best month since install in May 21.

Total for month was 366 kwh.Should also hit 4 MW since install in the next couple of days.

Solar is really starting to pay its way.😀

garbanzo · 01-09-2022 6:35pm

Hi fellow Solar Folk

Happy to report the following for the month of August. A reminder, I’ve a 4Kw system on an even East : West split based in South Dublin. No battery.

Total generated: 467kw

Highest day: 11th August, 21.46kWh

Lowest day: 16th August 6.39kWh

Gives an average of 15kWh per day over the month. I don’t know as yet how much I am saving on my bills as I haven’t had a bill yet. It is further complicated by the fact that I changed providers to SSE in mid-August plus those various (serious) electricity increases that have also been announced.

Still waiting for my grant to come through from SEAI too but overall I’m happy with everything.

g

championc · 01-09-2022 8:17pm

August Stats

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

Generation – 435.71 kWh
Consumed  - 361.20 kWh
Import   – 16.22 kWh
Export   – 48.29 kWh
Eddi    - 12.4 kWh
Zappi   - 113.0 kWh

Meter Readings 05282 (01115 Day - up 10 / 04167 Night - up 10) - Gas 6268 (up 9)

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 |        |
October  |    151 |    185 |        |
November |     90 |     78 |        |
December |     56 |     52 |        |
---------+--------+--------+--------+
Total    |   2.41 |   2.90 |   2.64 |

John mac · 01-09-2022 10:17pm

7.4kW east / west @50°

Mayo

Total Generation: 770 KWh

Best Day: August 10th - 39.2 KWh

Worst Day: August 1st 11 KWh

Chancer20 · 02-09-2022 3:55pm

August brought me 541kWh

3.5kWp system approx 50/50 South and East, 45 degree roof.

Highest Day 11th - 25.5kWh

Lowest Day 1st - 8.6kWh

Better than July where we were just shy of 500kWh.

championc · 02-09-2022 5:05pm

Double my slope. It's a huge benefit. Will really help in low sun winter days

ECO_Mental · 02-09-2022 7:50pm

6.1kWp system in Cork I produced 925kWh in August.....

To say it was a good month is a bit of an understatement 38% over the estimate. I only used 40% of it since I was on holidays for 2 weeks of it, but since I got my EV I have really ramped up the self consumption. For that stellar second week I managed to use 62%.

I reckon I saved myself around another €100 with my PV system for the month although a good chunk of the savings are in the Zappi with should be night rate.

Only one more month for a calendar year install and if I can get over 600 kWh for September it should see my 6.1 kW system produce 7000 kWh for the year

septicsac · 03-09-2022 2:50am

7.8KW system - good August, March eventually surpassed

yankinlk · 04-09-2022 1:20am

https://www.boards.ie/discussion/comment/119563199#Comment_119563199

forgive me for asking... but why do u think u import so much? i generated 200+ less and u imported 100+ more?

Is it an EV causing this or a Heatpump? or somethine else like a SMart Meter and no load shifting?

septicsac · 04-09-2022 3:50am

https://www.boards.ie/discussion/comment/119567831#Comment_119567831

6 people living in the house, 3 kids, all with xboxes and tvs going non stop,only 5kw battery, probably need a 10kw in summer, but 5 more than enough in winter, hard to justify the price of 10kw when half the time not needed and no interest in self build batteries etc. Happy with setup, its in, does its own thing and I dont have to worry about it.

Might add extra battery etc down the line, when other things like insulation and EV purchase are sorted

On plus side i have reduced my electricity dependency by near 60% from nov to today, importing 40% of my needs

yankinlk · 04-09-2022 7:11am

https://www.boards.ie/discussion/comment/119567945#Comment_119567945

😜 human heat pumps in a house filled with joy. Nice one. Hopefully the next generation learns from your reduce habits, but in my house I have to run round turning off lights or asking google to shut down xboxes with tapo plugs. One moved out this year and it was amazing to show him how the house consumption dropped the day after his pc, tv, laptop, cooking time left...

championc · 04-09-2022 8:49am

The best way to manage (and reduce) electricity usage is to give your wife access to your MyEnergi and Solis App dashboards 😉. She'll hound the kids to turn off devices when they are unused, and make them aware of their usage 😂

Ballyv24 · 07-09-2022 1:54pm

System installed last May, but August was my record month

August: 1164kWh

8kWp system approx 14 panels South and 6 South East

Highest Day 8th - 51kWh

Lowest Day 1st - 15kWh

Self Use: 609kWh

Export: 555kWh

Imported 27kWh total

Ha Long Bay · 30-09-2022 7:31pm

425KW generated for September with 32KW to the Eddi. 7.2KW South facing in Dublin. Best day was the 4th generated 25KW

yankinlk · 30-09-2022 7:49pm

My first September. Brought me down to earth compared to August

slave1 · 30-09-2022 8:21pm

Midlands

Array 1: 4.1kWp SSW with Winter Shading, 3.3kWp NNE

Array 2: 2.73kWp SE, 0.91kWp S, 3.64kWp SW (all neighbourhood shading/optimised)

580kW imported

905kWh Generated

764.5kWh consumed

310kWh diverted to Eddi

365.2kWh diverted to Zappi

Approx 1685.3kms of range into the EVs

Highest was 55.7kWh

Lowest was 7.6kWh

74% self-sufficient (excluding EVs)

57% self-sufficient (including EVs)

Monthly cash saving based on average daily load and all non-load items like dishwasher/washing machine/immersion at night rate, €77.76

fuse · 30-09-2022 9:54pm

1st Month. Panels installed 1st Sep, battery commissioned 12th.

5.7kWp E/W split in Dublin. 5.3kWh battery.

Eddi took 98kWh

Best day 4th @ 24kWh

Worst day 3rd @ 3kWh

jkforde · 30-09-2022 10:22pm

574kwh vs prediction of 542kwh (re.jrc.ec.europa.eu)

mid-Galway, 6.7kwp, 200° azimuth, 45° roof pitch

Eddi 110kwh, Zappi 200kwh

overall 60% self-use, not too bad but still masticating on 3rd 2nd hand battery!

Bif · 30-09-2022 10:36pm

620kwh generated from 6.9 kWp for September.

silver_sky · 30-09-2022 10:44pm

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

September generation was 369kWh with 71% self-consumption. Worst day was 3rd September at 1.7kWh and best was the very next day 4th September with 23.8kWh.

For comparison, August was 538kWh with almost 72% self-consumption so pretty consistent. Best in August was 27kWh and worst was 6.5kWh. The gap is widening and number of days over 20kWh was more in August (6) than in September (4).

EDIT: re.jrc.ec.europa.eu predicted 368kWh in September so pretty exact. August was about 100kWh more but the weather was unusual then.

Jonathan · 30-09-2022 11:03pm

4.83kWp south facing, Dublin Fingal

423kWh generated

84kWh exported (80% solar self-consumption)

99kWh imported (8kWh day, 91kWh night)

30kWh generated best day (4th Sept)

3kWh generated worst day (3rd Sept).

Five(!) days this month with 5kWh or less generated.

garo · 30-09-2022 11:24pm

https://www.boards.ie/discussion/comment/119550949#Comment_119550949

4.8kW EW Dublin. 10kWh DIY battery

September 2022 (kWh):

Production: 328.6 (335 predicted, 339.2 last year)

Consumption: 647

Import: 332 (54d, 278n)

Export: 13.8 (25.9 last year)

Best day: 3rd: 22.8

Worst day: 4th: 2.9

allinthehead · 01-10-2022 12:00am

3.2kwp SE, .8kwp NW, .8kwp W.

329.6kw generated. 477kw in August.

DrPhilG · 01-10-2022 2:06am

September Stats

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

Generation – 487.5kWh

Export – 18.9kWh

Import – 141.1kWh

Best day – 5th, 30.4kWh

Worst day - 3rd, 2.8kWh

Days with less than 1kWh purchased - 13.

curioustony · 01-10-2022 7:50am

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

THE ALM · 01-10-2022 10:40am

South Roscommon, 8.16Kwp, facing 210° at 35°

Total generation 648kWh (on par with the predicted production)

Consumed 539kWh

Energy from Grid 56kWh (mainly due to having a night charge for the EV)

Energy to Grid 142kWh

To the Eddi 112.3kWh

To the Zappi 125.7kWh

To the Battery 186kWh (Upped battery capacity to 9.6kWh last two weeks on the month)

From the Battery 163kWh

Best day 17th with 39.8kWh

Worst day 11th with 4.2kWh

Running about 78% self use.

Since upping the battery storage we have imported 5kWh.

Energy exported would have generated €25.56 at Energia FIT rate if on a smart meter, we are D/N.

graememk · 01-10-2022 11:44am

Havent done this in a while, but heres Sept for me

20kwh battery, 8ish kwp, 27.8 day/7.9 night.

steamdave · 01-10-2022 12:25pm

September was the first full month that I could compare my generation to PGVIS. I managed a total generation of 496.95 kWh against a predicted 468.7 kWh.

There were 5 days of less than 10 kWh generation, the worst being 11 and 27 Sept with 6.3 kWh.

Total feed in was 289.78 kWh, although I was away for 8 days in that time. There were 4 days of less than 1.0 kWh, the lowest being 27th Sept. I regard Feed In payment as a bonus, not a reason to oversize the system for our use.

System 5.1 kWp on a SSE facing roof + 5Kwhr battery in West Cork. I sized my system for the two of us living at home to try and get some useful generation during the 4 'dark' months. We'll see..

Dave.

Solar PV Performance Thread - Post your monthly output

Comments