Solar PV Performance Thread - Post your monthly output

ionapaul

For August:

757kWh generated - 6.72kW system facing ESE in South Dublin.

290kWh consumed.

Generation down on August 2024 (796kWh) and up on August 2023 (727kWh).

In August, self-used 26% of electricity generated and fed in the other 559kWh (no battery).

Since initial installation on March 7 2023, a total of 20.66MWh generated, 14.46MWh fed to grid, with a self-use ratio of approximately 30%.

magicbastarder

18 panels - 6 E facing, 4 S facing, 8 W facing, 7.92kW

787kWh.

it's only in a few months.

Pistachio19

15 panels - 4 E, 5 S, 6 W / 8+5kw batteries / Co Sligo

481kwh generated in August

Really disappointed with ours when I see the amount others are generating between here and facebook groups.

ranoutofcoffee

22 panels. 6 East, 7 West and 9 south. 9.6 kw system. August 2025 is the first full month, generated 916.4 kw, 353.8 kw consumed and 562.6 kw to grid. 10 kw battery.

discostu1

15 panels ,5.5 kw system, 15kw battery got 706 kws in Aug 25, down slightly from 716 kw I. Aug 24 , panels are all South facing

mossie

778kwh, 18 panels west / south west facing in Cork. A lot of not very sunny days despite the heat but still over predicted for the month.

bullit_dodger

Solid month 6.5Kwp split E/W in south Dublin City. 113% of PVGIS, so happy with that.

Shed also had 251kwh which is a different system. It's 2.3Kwp facing due south which brings me up to 869kWh off 8.8kwp in total. Nice to see these numbers, but it starts to drop sharply in Sept as above.

ECO_Mental

https://www.boards.ie/discussion/comment/123776529#Comment_123776529

What reporting system are you using, did you develop your own bespoke dashboard

ECO_Mental

683 kWh 6.1 kWp south facing in Cork

In other news…. I've only just discovered Home Assistant now have a nice Sankey graph in the energy section..all the way at the bottom out of sight!

GhostInTheRuins

https://www.boards.ie/discussion/comment/123777276#Comment_123777276

I think that shankey graph has been there for a few years now at least!

oleras

11.04kWp split 12 panels E, 8 W & 4 S. 16kwh battery storage. Limerick.

Just shy of 3 MWh produced over the June, July and August, only installed since late May.

ted1

14 panels (6.2kw) , south Dublin. 730kwh

It was a very cloudy August …😥😥

about €155 credit ( I have the rate at before any discounts, so I actually earned more)

bullit_dodger

https://www.boards.ie/discussion/comment/123777228#Comment_123777228

It's my own app. Givenergy have an API where you can dump the raw data (comes in json) and and then I store that in a FoxPro database/app that I wrote. I'm old skool (I was one of the developers of Foxpro back in the day - as in I worked on the product itself) It's useful having the raw data as you know ECO as you can do all manner of crud with it that typically your bog standard apps/webpages don't really show you like comparison of days from one year to the next etc

With the app, I also dynamically set charging levels based on forecasts.

ECO_Mental

https://www.boards.ie/discussion/comment/123777360#Comment_123777360

No way!!🫢 I look at that dashboard almost every week and never spotted it...doing some Google research I think it might have been in the August update...but I could be wrong as I font normally scroll all the way down

championc

August Stats - Sth Dublin

3.9kWp S – 265.3 kWh
4.0kWp N - 328.1 kWh
Eddi - 17.6 kWh
Zappi - 191.4 kWh

Meter Readings 20975 (H+|1 20364 - up 1085 / H+|2 533 - up 3 / H+|3 78 - up 0 / H- 12721 - up 871)

Pinergy - Imported 1085 @ 5c & 3 @ 37c / Exported 871 @ 25c - Cost €162.39r

Vaillant Heatpump - Consumed 0.9kWh / Yield 4.0kWh (OpenEnergyMonitor) - COP 3.60 / SCOP 4.20 Only operated 2 days.

Totals so far:

2.7kWp main roof + 1.2kWp on shed (S)

Month    |   2020 |   2021 |   2022 |   2023 |   2024 |   2025 |

---------+--------+--------+--------+--------+--------+--------+

January  |     75 |     56 |     81 |     76 |     71 |     82 |

February |    122 |    142 |    111 |    134 |    144 |    118 |

March    |    200 |    269 |    370 |    245 |    237 |    319 |

April    |    279 |    373 |    372 |    320 |    366 |    377 |

May      |    396 |    430 |    445 |    449 |    407 |    481 |

June     |    264 |    425 |    425 |    341 |    423 |    357 |

July     |    261 |    387 |    407 |    341 |    401 |    276 |

August   |    254 |    264 |    435 |    332 |    424 |    265 |

September|    268 |    248 |    242 |    279 |    230 |        |

October  |    151 |    185 |    221 |    173 |    216 |        |

November |     90 |     78 |     96 |     89 |     79 |        |

December |     56 |     52 |     55 |     44 |     49 |        |

---------+--------+--------+--------+--------+--------+--------+

Total    |   2.41 |   2.90 |   3.26 |   2.80 |   3.05 |   2.28 |

4.0kWp on main roof (N)

Month    |   2023 |   2024 |   2025 |

---------+--------+--------+--------+

January  |        |     27 |     25 |

February |        |     65 |     41 |

March    |        |    135 |    152 |

April    |        |    265 |    265 |

May      |        |    342 |    474 |

June     |    441 |    427 |    431 |

July     |    385 |    373 |    399 |

August   |    301 |    330 |    328 |

September|    163 |    143 |        |

October  |     83 |     84 |        |

November |     38 |     33 |        |

December |     24 |     20 |        |

---------+--------+--------+--------+

Total    |   1.61 |   2.24 |   2.11 |

championc

https://www.boards.ie/discussion/comment/123705780#Comment_123705780

I have to say I 100% agree, but 1.2kWp of the 3.9kWp is on my Shed roof, and they get shaded for around 6 months of the year, from the row of houses behind. But summer is still not 100% right

celtic_oz

My fifth year of solar, 6.2kwp Monaghan

August 2025 was bang on average!

22 MWh produced to date!