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Solar PV Performance Thread - Post your monthly output

championc

I think it would be very useful to post Solar PV monthly generation figures. Not only could it highlight a problem further down the road, but there many be many owners who are getting far less than they expected (or promised by an installer) and would welcome feedback from other owners.

Of course, there are so many factors involved. Your location in the country (or abroad for our international boardies), your array size, your array direction and the panels mounting angle.

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mun1

mun1 wrote: »

May 2020

Total generated 524 KWhr
Power from grid 128 kwhr
Solar Power to grid 90 kwhr
IBoost 220 kWhr
Best day 24.4 kwhr 30th may
Worst day 8 kwhr 5th may

June 2020
3.7kw S/SW, 12 panels

Total generated 317kWhr
Power bought from grid 231kWhr
Solar power to grid 63kWhr
Monthly self use rate 75%

championc

championc wrote: »

3.6kw South Facing - South Dublin - 22 deg slope - 16.8kWh Lead-Acid Batteries
https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

January Yield - 75kw
February Yield - 121.55kw
March Yield - 200.59kw
April Yield - 279.11kw
May Yield - 396.34kw

Terrible Month
June Generated - 264.13kw / Consumed - 329.82.84kw / Imported - 122.28kw / Exported - 19.85kw / Eddi - 13kw / Zappi 0kw
Batteries - Charged 139.56w / Discharged 126.07kw

Meter Readings 01080 (00272 Day / 00808 Night)

Gazzler82

championc wrote: »

Terrible Month
June Generated - 264.13kw / Consumed - 329.82.84kw / Imported - 122.28kw / Exported - 19.85kw / Eddi - 13kw / Zappi 0kw
Batteries - Charged 139.56w / Discharged 126.07kw

Meter Readings 01080 (00272 Day / 00808 Night)

Install mid month. Was feeling a bit worried about it all but above post makes me feel better!!!

3kw SE Cork 125kwh produced. Start date 16/6 (I think start of June was way better sun wise )

reklamos

reklamos wrote: »

May stats

Generated: 676 kWh
Used: 731.8 kWh
Import: 94.6 kWh
Export: 27.8 kWh
Hot water: 73 kWh
Best day: 30.6 kWh May 11th
Worst day: 6.5 kWh May 18th

Disappointing month:
Generated: 413.1 kWh
Used: 570.7 kWh
Import: 166.2 kWh
Export: 5 kWh
Hot water: 24 kWh
Best day: 27.7 kWh June 1st
Worst day: 4.1 kWh June 6th

Winterman1234

Winterman1234 wrote: »

May values are:

Generation-306.5kWh
Grid Consumption-82kWh
Hot Water Eddi-104kWh
Lowest Daily Gen on the 17th -0.9kWh
Highest Daily Gen on the 6th & 29th -15.2kWh

June values for 2.48kw system, south east facing donegal.Eddi but no battery

Generation -224kWh
Grid Consumption-91kWh
Hot Water Eddi-81kWh
Lowest Daily Gen on the 28th-1kWh
Highest Daily Gen on the 1st-14.2kWh

denismc

Winterman1234 wrote: »

June values for 2.48kw system, south east facing donegal.Eddi but no battery

Generation -224kWh
Grid Consumption-91kWh
Hot Water Eddi-81kWh
Lowest Daily Gen on the 28th-1kWh
Highest Daily Gen on the 1st-14.2kWh

It's interesting the difference a few hundred kms make, I am near the Old head of Kinsale, Cork and I also produced 224 kWh but my system is 2.08 kW.
I am south facing though so maybe that made the difference!

Shefwedfan

19 x 330 panels, 2.XkWh batter, SW facing

Feb
PV Generation this Month 255.10 kWh
House Consumption this Month 1107.60 kWh
Battery Throughput this Month 175.20 kWh
Grid Import this Month 965.50 kWh
Grid Export this Month 71.30 kWh

March
PV Generation this Month 441.80 kWh
House Consumption this Month 980.50 kWh
Battery Throughput this Month 193.40 kWh
Grid Import this Month 667.50 kWh
Grid Export this Month 122.50 kWh

April
PV Generation this Month 657.20 kWh
House Consumption this Month 680.90 kWh
Battery Throughput this Month 144.80 kWh
Grid Import this Month 292.10 kWh
Grid Export this Month 262.80 kWh

May
PV Generation this Month 920.3 kWh
House Consumption this Month 795.90 kWh
Battery Throughput this Month 72.2 kWh
Grid Import this Month 265.9 kWh
Grid Export this Month 378.0 kWh

June
PV Generation this Month 563 kWh
House Consumption this Month 691.6 kWh
Battery Throughput this Month 46.2 kWh
Grid Import this Month 318.90 kWh
Grid Export this Month 191 kWh

rx8

4.2kwp E/W facing. Dublin North City.
Total generation: 378.4 kwh.
Total consumption: 365.9 kwh.
Best day: 8th, 25.2kwh
Worst day: 6th, 4.0 kwh
I-boost:52 kwh

garo

garo wrote: »

4.8kW EW Dublin. 2.4kWh battery
May(kWh):
Predicted: 560
Actual: 725
Consumption: 597 - had the immersion on most days to soak up the excess.
Import: 165(76d, 89n)
Export: 293

Best day: Lots of days above 29 kWh
Worst day: 10th: 7.7

June(kWh):

Production: 491 (559 predicted)
Consumption: 456 (495 pred.)
Import: 161 (80d, 81n) (138 pred.)
Export: 196 (202 pred.)

Best day: 8th: 31.4
Worst day: 6th: 4.9

It's all downhill from here folks!

jimmyging

June production
6.12 kw ground mounted system
699 kwhrs produced

fillum

Hmm, my first full month with a solar setup and seems like I'm not getting near the numbers posted here.

12 x 340w panels - 4.1kw
Solis Hybrid inverter
4.8kw battery
E/W split

July production: 220kw.

Would anyone have any ideas?

Thanks

DrPhilG

Looking forward to posting monthly figures, just got my system up and running yesterday.

My brains are fried figuring out the monitoring and making some adjustments via the installer, but hopefully I'll have it sorted by the end of August.

Generated 13kWh between 3pm and close of play yesterday despite it being a miserable Donegal day so I'm optimistic.

markpb

fillum wrote: »

Hmm, my first full month with a solar setup and seems like I'm not getting near the numbers posted here.

The weather in June was pants compared to May. Our 3.1kWp system generated 532kW in May but only 330-360kW in April, June and July. We passed the 2MWh milestone yesterday, a little over six months after install.

220 does seem very low though.

championc

fillum wrote: »

Hmm, my first full month with a solar setup and seems like I'm not getting near the numbers posted here.

12 x 340w panels - 4.1kw
Solis Hybrid inverter
4.8kw battery
E/W split

July production: 220kw.

Would anyone have any ideas?

Thanks

This is exactly the reason why I started this thread - to spot when things just don't seem right.

Are those East and West panels on separate strings ? If not, then that is your problem. Look on YouTube for videos about Tigo Optimisers, and you'll see what happens when one lot of panels is in sunshine while another set are shaded.

If you can look at your systems data, it possibly shows high production at solar noon (around 13:30), then sun will hit both sets of panels. The steeper the roof, the quicker shorter the time before one side is then shaded.

DrPhilG

Well a long way from having substantial statistics, but I can say that since I left home at 8am until I came home at 6pm, the day reading on my meter hasn't budged.

In fairness I did have a few hours of a planned outage this morning but it's been on again since 12.

rx8

4.2kwp E/W facing. Dublin North City.
Total generation for July: 392.4 kwh.
Total consumption: 356.1kwh.
Best day: 19th, 21.6kwh
Worst days:4th & 7th, 6.1 kwh
I-boost:39.5 kwh
Better than June even though it didn't seem like it.

mun1

mun1 wrote: »

June 2020
3.7kw S/SW, 12 panels

Total generated 317kWhr
Power bought from grid 231kWhr
Solar power to grid 63kWhr
Monthly self use rate 75%

July 2020
3.7kw S/SW, 12 panels

Total generated 335KWhr
Power bought from grid 153kWhr
Solar power to grid 100 kWhr
Monthly self use rate 60%

MAULBROOK

North Wexford

6.2kw facing SE 152

Total generated 680.7kw
Best day 38.2kw 19th
Worst Day 7.1kw 8th
Exported 144.2kw
Imported 1.1kw and im not joking
Eddie 177.4kw

Winterman1234

Winterman1234 wrote: »

June values for 2.48kw system, south east facing donegal.Eddi but no battery

Generation -224kWh
Grid Consumption-91kWh
Hot Water Eddi-81kWh
Lowest Daily Gen on the 28th-1kWh
Highest Daily Gen on the 1st-14.2kWh

July Values

Generation -198kWh
Grid Consumption -93kWh
Hot Water Eddi -78kWh
Lowest Daily Gen on the 3rd - 1.7kWh
Highest Daily Gen on the 26th - 13kWh

championc

championc wrote: »

January Yield - 75kw
February Yield - 121.55kw
March Yield - 200.59kw
April Yield - 279.11kw
May Yield - 396.34kw
June Yield - 264.13kw
Meter Readings 01080 (00272 Day / 00808 Night)

3.6kw South Facing - South Dublin - 22 deg slope - 16.8kWh Lead-Acid Batteries
Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

Poor month again
July Generated - 261.88kw / Consumed - 296.6kw / Imported - 100.3kw / Exported - 9.9kw / Eddi - 11kw / Zappi 0kw
Batteries - Charged 149.71w / Discharged 127.99kw

Meter Readings 01186 (00304 Day / 00882 Night)

While I have a similar size system to you @mun1, and our locations are different, but your generation is well in excess of mine - hmmmm

garo

Might be the shallow angle of your roof. 22 is pretty shallow.

Gumbo

3Kw system.
South facing.

276.4 kWh for July

DrPhilG

How many of you folk are using the Solis app/site? Is it easy to produce these figures?

I'm only 2 days in so still a learning process.

rx8

DrPhilG wrote: »

How many of you folk are using the Solis app/site? Is it easy to produce these figures?

I'm only 2 days in so still a learning process.

I definitely find it much easier if I use the desktop to view it, the phone is OK but not as easy to read graphs or when you add different settings.

Gazzler82

3kw SE facing Cork
291kw produced
Best 21st 16.5
Worst 8th 3.2

mun1

championc wrote: »

3.6kw South Facing - South Dublin - 22 deg slope - 16.8kWh Lead-Acid Batteries
Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

Poor month again
July Generated - 261.88kw / Consumed - 296.6kw / Imported - 100.3kw / Exported - 9.9kw / Eddi - 11kw / Zappi 0kw
Batteries - Charged 149.71w / Discharged 127.99kw

Meter Readings 01186 (00304 Day / 00882 Night)

While I have a similar size system to you @mun1, and our locations are different, but your generation is well in excess of mine - hmmmm

Yes, your output seems low , not just this month.

I have 8x315 panels south facing, approx 40 deg slope on shed and 4 panels vertical mounted west facing , which give good output in the evening
Is there any shadow at any point in the day ?
It cant be the panels, can it ?

garo

garo wrote: »

June(kWh):

Production: 491 (559 predicted)
Consumption: 456 (495 pred.)
Import: 161 (80d, 81n) (138 pred.)
Export: 196 (202 pred.)

Best day: 8th: 31.4
Worst day: 6th: 4.9

It's all downhill from here folks!

4.8 kWp E/W. 2.4kWh battery. 24 degree slope.

July(kWh):
Production: 474 (528 predicted)
Consumption: 412 (512 pred.)
Import: 136 (64d, 72n) (154 pred.)
Export: 198 (170 pred.)

Best day: 19th: 24.1
Worst day: 7th: 7.6

jimmyging

6.1 kw S facing ground mounted
July production 726kw/ hrs

championc

Pouring rain today and I still managed to generate more than Monday.

Monday will go down in history as the grimmest day ever !!!

championc

It's amazing the difference (higher) in production with the cooler air temperature