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[Sticky] Solar Power Output – Let’s Compare Generation Figures

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Solar Photovoltaic (PV)

Last Post by Tim441 1 week ago

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Andris

(@andris)

Reputable Member Member

1191 kWhs

Joined: 4 years ago

Posts: 99

28/02/2025 8:12 am

8.4kw System.

Very shaded in January 159kw

February shading improvement but still bad after 2 pm. 275kw.

16kw Samsung TDM ASHP. 8.4kw PV, power optimizers 20×420watt panels 6kw SolarEdge inverter.

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IanMK13

(@ianmk13)

Reputable Member Member

3065 kWhs

Joined: 2 years ago

Posts: 190

28/02/2025 11:55 am

6kWp installation (installed last year, so no historical comparisons):

November 2024 - 160kWh

December 2024 - 95.7kWh

January 2025 - 176.5kWh

February 2025 - 214kWh

I was pleasantly surprised that January and February have been an improvement on November. I don't recall November being so dull, nor this year being particularly sunny (so far).

Best day this year was yesterday at 23kWh.

👍

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Toodles

(@toodles)

Famed Member Contributor

11249 kWhs

Joined: 2 years ago

Posts: 1818

28/02/2025 2:13 pm

@ianmk13 From other reports, it looks as though January was a rather dull month for most of us solar hunters! 2024 was a total of 6 MWh but 2023 was 6.5 MWh. We have had clouds loathed to move away for months but, this February has beaten the 29 day February of ‘24 by a small margin as we had 196 kWh last year and in one day less, we are heading for near 230 kWh this year. I hope this is going to be a trend - our 8.1 kWp. solar harvester is less than ideally place but we need every Watt we can harvest! Rewards, Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.

👍

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Majordennisbloodnok

(@majordennisbloodnok)

Noble Member Moderator

7250 kWhs

Joined: 3 years ago

Posts: 742

28/02/2025 3:04 pm

From our 6.5kWp array:

	2023	2024	2025
Jan	151.6	158.8	110.6
Feb	238.5	168.7	167.8

So it's fairly plain that this year has been somewhat darker than the usual for me.

This post was modified 1 week ago by Majordennisbloodnok

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; suus solum profundum variat"

👍

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Tim441

(@tim441)

Honorable Member Contributor

2219 kWhs

Joined: 2 years ago

Posts: 263

28/02/2025 4:01 pm

From our 6.0kWp array. East facing at 5deg pitch. Output generally feels OK for sub-optimal installation. Somerset, SW England

	2023	2024	2025
Jan	104	129	110
Feb	160	221	180

Totals:

2022: 5109

2023: 4442 included 15 day outage in June. Losing around 400kwh? Comparison say 4842?

2024: 5135

Installer estimate was 5129pa. Seems bang in line.

Also have additional small 2.2kw array on South facing roof with circa 40 deg pitch. No monitoring until mid 2023

Jan 50kw

Feb 60 kw

2024 total 1500kw

This post was modified 1 week ago 2 times by Tim441

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV

👍

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Andris

(@andris)

Reputable Member Member

1191 kWhs

Joined: 4 years ago

Posts: 99

28/02/2025 4:22 pm

Atchally, my final number was an estimation but now that the sun is almost gone we hit 283kW. Just today was 30kW.

16kw Samsung TDM ASHP. 8.4kw PV, power optimizers 20×420watt panels 6kw SolarEdge inverter.

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NJT

(@njt)

Estimable Member Member

946 kWhs

Joined: 7 months ago

Posts: 51

28/02/2025 4:33 pm

Our 1st winter with 6.1kWp solar.

South facing no shading

Dec 108kw

Jan 213kw

Feb 247kw

This post was modified 1 week ago by NJT

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Toodles

(@toodles)

Famed Member Contributor

11249 kWhs

Joined: 2 years ago

Posts: 1818

02/03/2025 6:33 pm

@njt Almost a textbook day for the first time this year! Here’s hoping for many more! Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.

👍

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NJT

(@njt)

Estimable Member Member

946 kWhs

Joined: 7 months ago

Posts: 51

02/03/2025 6:50 pm

@toodles yes superb, today plus yesterday totals 60kw yield, 42kw exported 👍

Looking full sun for the next 4 days here too.

👍

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Tim441

(@tim441)

Honorable Member Contributor

2219 kWhs

Joined: 2 years ago

Posts: 263

02/03/2025 8:08 pm

From our 6.0kWp array. East facing at 5deg pitch. Output generally feels OK for sub-optimal installation. Somerset, SW England.

Cleaned this morning - due to pitch they were fairly green & algae covered.

Interesting to note output today 20.6kwh vs 18.5kwh yesterday. Always difficult to be 100% certain it's like with like day.

Worth noting this is first day exceeded 20kwh since last September. 😱 😱

But also have additional small 2.2kw array on South facing roof with circa 40 deg pitch. Also cleaned but not very dirty and therefore impact minimal. Almost exactly same output today as yesterday. 6.62kwh today vs 6.48 kwh yesterday.

Perhaps useful indicator that cleaning can be useful on low pitch arrays?