Solar PV Performance Thread - Post your monthly output

Southwest

3.24kw West facing.

13 days 118kw generated

dloob

First full month of operation.

7.6kWp split into 4.56kW east and 3.04kW west, 5kWh battery

Yield 844.47kWh Exported 228.86kWh

Consumption 768.10kWh Imported 161.16kWh

The months stats below shrunk to illegibility by boards but gives an idea.

DrPhilG

July Stats

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

Generation – 681.6kWh

Export – 118kWh

Import – 163.9kWh

Best day - 16th, 39.3kWh

Worst day - 26th, 6.5kWh

Weird month. Start and end were appalling, middle was the heat wave.

Aug - 572.1

Sep - 437.2

Oct - 254.3

Nov - 106.4

Dec - 68.3

Jan - 100.6

Feb - 187.5

Mar - 316.9

Apr - 658.5

May - 772.2

Jun - 666.3

Jul - 681.6

DrPhilG

And that's my first year complete.

4877kwh predicted

4821.9kWh generated (98.9%)

659.7kWh exported

4371.7kWh purchased

garo

https://www.boards.ie/discussion/comment/117559790#Comment_117559790

4.8kW EW Dublin. 2.4kWh battery

July 2021(kWh):

Production: 610 (528 predicted)

Consumption: 702

Import: 249 (55d, 194n) (Had to charge car a few times)

Export: 157 (202 pred.)

Best day: 17th: 29.7 (Every day from 14th to 25th was 25+)

Worst day:11th: 8.6

kabakuyu

https://www.boards.ie/discussion/comment/117561417#Comment_117561417

July total is 339.7kwh.

2.5 kwp system facing south, Galway .

Best day 17.6 on 16/7.

Worst day 2.1 on the 6th.

The 10 days of sunshine made a huge difference, very low yield on some days early and late in the month.

I'm happy with the monthly total, I think that a 2.5 system producing anything over 300 kwh per month in the summer months is quite good.

raytaxi

Total for July 330kW though inverter says 290 all days added up is 330

Best day was 16kW 18 and 19

Worst was 4.9kW on the 30 July

2.5kW based in northeast Louth and ssw

Supplied by SASS

kabakuyu

https://www.boards.ie/discussion/comment/117695065#Comment_117695065

I wonder is there a problem with the Goodwe portal, I got my total reading from it via my phone on saturday night.There now appears to be a new total but the last 5/6 days of production are not in that total😮 yet the total since installation contains those figures, I'm confused.I kept a running total through the month and my 339 figure corresponds with the daily readings.

raytaxi

https://www.boards.ie/discussion/comment/117695260#Comment_117695260

Thats possible I was watching the total over the month and was hoping to hit the same as previous months. I haven't checked meter in attic which would be most reliable way.Will get that done next day or so. Can't complain have over 1089kW since install in April.

kabakuyu

https://www.boards.ie/discussion/comment/117695415#Comment_117695415

I will get up to ckeck inverter readings later as well, but I find the Goodwe portal odd, there are discrepancies between the phone app and the desk top.Is the inverter reading the most accurate? at the moment I am getting total since install in mid May as 869kwh on phone and 923kwh on desktop.

Alkers

2.52kWp south facing, Dublin city, installed Dec 12th 2020.

December total 58.4kWh

January total 82.6kWh

February total 148.3kWh

March total 222.8kWh

April total 327.2kWh

May total 345.6kWh

June total 341.1 kWh

July total 334.2 kWh

Highest - July 19th (16.6kWh new highest)

Lowest - July 30th (4.6kWh)

raytaxi

https://www.boards.ie/discussion/comment/117695486#Comment_117695486

Meter was installed as part of install that measures the output from panels, I would think the inverter would show the same as the web and app think at times maybe slow to update.

kabakuyu

https://www.boards.ie/discussion/comment/117697010#Comment_117697010

You're on the money, readings updated overnight, now showing 339.7 total for month.

raytaxi

https://www.boards.ie/discussion/comment/117698983#Comment_117698983

Mine updated as well showing 330 not bad at all. I have 1093 total since install at end of April.

https://www.boards.ie/discussion/comment/117693172#Comment_117693172

Mine has updated to 173kw😁

kabakuyu

https://www.boards.ie/discussion/comment/117699490#Comment_117699490

Big difference, you hit the good weather at installation.

ParkRunner

https://www.boards.ie/discussion/comment/117558435#Comment_117558435

Figures for July:

Generated 761 kWh

Consumed 495 kWh

Exported 391.7 kwh

Imported 125.8 kwh

Home 309.2 kWh

Eddi 185.9 kWh

Green 75% (369.3)

Good month overall. Import and export figure on the high side but still I think doesn’t justify a battery install. Will need to see what the autumn/winter is like although August is looking like giving a good taster of that!

SD_DRACULA

Maybe it is debatable without the grant sure but if you can go for a setup like DrPhil's and not off the shelf stuff, it might be.

This is 3 month usage here (good months sure, but in winter you can buy night rate power and store it too)

FIT is nowhere in sight as only that could have made the battery redundant with high exports.

slave1

Battery a no no unless self install, totally agree with that.

EVs will further "kill" batteries as night rate limits will be exceeded in Winter and batteries all but zero for half the year

garo

night rate limits? I know Energia has 2000kWh every two months which you may exceed if you do all your charging at home and have a heat pump. But even so the higher rate is 10.95 which is still half the day rate on the EV plan.

I don't see any usage limits of Bord Gais' plan. Not sure about other providers.

Manic Moran

Meanwhile, back at the ranch (i.e. central Texas), an astonishingly mild Summer, not a single day over 100 so far in July (37C). Normally 104-110 is typical. On the plus side, this means consumption was lower, on the downside, so was sunshine. Also, I've discovered that my roof is angled such that the sun is less perpendicular to the panels in summer, so peak power is less, even if the hours of daylight are more. Still, I never expected to produce more than 2/3 of summer consumption which is about what got, so things worked out about right.

11.5Kw system.

2.1 MwH consumed. 1.4MwH produced. 0.9MwH consumed at time of production, 500KwH sent to the grid on credit (We get 1:1 here). Overall, 759KwH net imported for the month.

Bricriu

Sorry, don't want to derail the thread, but I need to have my Solar Panels serviced, and the technician who installed them won't come to service them.

Anyone know a good Solar Panel technician in County Galway (not Ryan Energy)?

Incidentally, my panels don't supply water hot enough to shower with from Oct to March - not good!!

DrPhilG

https://www.boards.ie/discussion/comment/117722440#Comment_117722440

You'll probably get more joy here:

https://www.boards.ie/discussion/2058101518/solar-pv-hints-tips-troubleshooting

I'm curious to know what exactly needs serviced though?

championc

https://www.boards.ie/discussion/comment/117722440#Comment_117722440

Servicing ? Servicing what ?

There are no moving parts. The only thing you MIGHT need to do is to wash the panels, and with Irish weather, that's debatable.

garo

I think they are talking about solar water heating panels. This thread is for Solar PV. There is a separate thread for solar water heating panels.

https://www.boards.ie/discussion/2055868850/are-you-all-pleased-with-your-solar-panels-for-hot-water-heating#latest

handpref

5.4 east west split

680kw’s produced in July

Geeyfds53573

Sorry never posted June apparently

5.92 kWp of panel

WNW ESE 50:50

South Dublin

June 2021

Generated 809.04 kWh

ESE 396.42 kWh

WNW 412.62 kWh

Eddie 250.1 kWh

Zappi 81.5 kWh

Exported 238.6 kWh

Imported 77.1 kWh

Best Day 3rd 39.39 kWh

Worst Day 26th 6.95 kWh

July 2021

Generated 767.92 kWh

ESE 361.15 kWh

WNW 406.77 kWh

Eddie 246.1 kWh

Zappi 56.3 kWh

Exported 241.4 kWh

Imported 86 kWh

Best Day 17th 35.66 kWh

Worst Day 30th 10.63 kWh

paulbok

https://www.boards.ie/discussion/comment/117694499#Comment_117694499

What is the max kwh of your panels?

Trying to get a feel of what % of max production is realistic. Bit of of how long is a piece of string question, but hoping to get a ballpark figure for costing calcs.

graememk

https://www.boards.ie/discussion/comment/117756596#Comment_117756596

https://re.jrc.ec.europa.eu/pvg_tools/en/#PVP%20that's%20the%20calculator%20for%20Europe,

The "pvgis-Sarah" one is the most pessimistic of the different databases. But accurate enough.

DrPhilG

https://www.boards.ie/discussion/comment/117756596#Comment_117756596

I have 6.2kwp, 20 x 310w JA panels.

9 south facing, 11 west.