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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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mp3guy

graememk wrote: »

Most people don't have an array the size you have.. so batteries rarely last that long anyway. So if you can save some for the morning.

Yeah if you carry over a bit to the next day usually won't be the worst in the world to ride out the morning.

But if your finding your carrying over too much, maybe knock it off in the summer,

But you really don't want to be putting your valuable battery power into a EV,

On a good day (only since installation last month mind you) my battery is full by 12:30pm but dead by 10pm, those electric kitchen appliances take a toll.

What do you mean by battery power into EV?

championc

mp3guy wrote: »

What do you mean by battery power into EV?

You don't want to be charging an EV up during the day or night, with the power coming from your batteries - you only want it coming from the grid.

So take care in summer to to charge your batteries with ZERO watts at night to avoid discharging at the same time - if you plan to charge your EV

mp3guy

championc wrote: »

You don't want to be charging an EV up during the day or night, with the power coming from your batteries - you only want it coming from the grid.

So take care in summer to to charge your batteries with ZERO watts at night to avoid discharging at the same time - if you plan to charge your EV

Oh. I just press a button in an app to disable battery discharge for the period I'm charging the EV, inverter supports it.

unkel

We might as well close this thread until the new year

MAULBROOK

What a cracking day for December.
9.6kw so far, might hit 10kw. Not bad at all.
99.9kw for the month so far.

Gumbo

20.12.2020

Total energy consumed : 16.5 kWh
Total energy generated: 7.6 kWh

44% of my use for the day was solar generated.

garo

Think about us E/W saddos. 2kWh.

DrPhilG

https://touch.boards.ie/thread/2058103000/15/#post115564249

slave1

garo wrote: »

Think about us E/W saddos. 2kWh.

Hear ya bro

unkel

E/W FTW. Might not look the best at the moment, but over the whole year, you guys come out winners. Even if we do get a FIT.

garo

Self consumption yes but not total output. But I take your point. We sacrifice production for 4 months to get production better matched to consumption for 8 months.

unkel

garo wrote: »

We sacrifice production for 4 months to get production better matched to consumption for 8 months.

There isn't an awful lot of production to sacrifice in those 4 months

Mind, whenever the sun is out in full, I still get about 1.5kW, but only really between 11AM and 2PM

garo

True but a south facing panels produces more in the summer too.

MAULBROOK

South East direction in north Wexford.
6.2kw Solar
5kw Solis inverter
7kw BYD Battery

December Total 154.3kw
Best day, Dec 6th 11.3kw
Worst Day Dec 18th 0.8kw.
Exported 2kw
Imported 266.8kw
Monthly self use 77.84%

Happy New Year everyone and best of luck for 2021.

reklamos

South 4.5kW PV, 10kWh battery

Total generated 114kW
Best day, 12th 10.8kW
Worst day, 21st 0.1kW.
Exported 0kW
Imported 430kW
Monthly self use 67%

Happy New Year

denismc

Dec 2020 88kWh from 2.08 kW panels, 20 kW more than last December.

Total for the year 2125kWh which is 65 more than last year!

Gary kk

Hey guys would putting panels on roof with sides facing east and west be a waste of time?

MAULBROOK

Gary kk wrote: »

Hey guys would putting panels on roof with sides facing east and west be a waste of time?

Nothing wrong with that at all.

mp3guy

10.24kWp array, 5.76kWp SSW, 4.48kWp ESE both 45 degree pitch in Cork.

South: 243.60kWh
East: 109.21kWh
PV Total: 352.81kWh
Best Day: 4th (22.95kWh)
Worst Day: 9th (1.34kWh)

Grid Import: 615.47kWh
Grid Export: 30.21kWh

House Usage: 772.22kWh
Car Usage: 140.73kWh
Water Usage: 25.12kWh

Interestingly my day/night split for energy usage went from 1/3 at night rate (before I got solar) to 3/4 at night rate since I also switched to night rate battery charging the night before low solar forecast days.

gman2k

Gary kk wrote: »

Hey guys would putting panels on roof with sides facing east and west be a waste of time?

For self use of the electricity generated, it's often the best setup.

mun1

December 2020
3.7kw PV array

December generated 88 kwhr.

Total generated since mid april 2020 2.53 MWh

bod71

bod71 wrote: »

Nov gen.74kwh. Low sun shade on SE string, NW string getting v little sun.

Dec Gen. 46kwh.

garo

garo wrote: »

4.8 kWp E/W. 2.4kWh battery. 24 degree slope.
November(kWh):
Production: 92.8 (100 predicted)
Consumption: 702
Import: 636 (289d, 347n) 60kWh night rate charging.
Export: 3 (3 pred.)

Best day: 3rd: 6.7
Worst day: 24th: 0.8

4.8 kWp E/W. 2.4kWh battery. 24 degree slope.
December(kWh):
Production: 55.2 (61.4 predicted)
Consumption: 744
Import: 714 (324d, 390n)
Export: 0 (0 pred.)

Best day: 14th: 2.8
Worst day: 23rd: 0.6

graememk

graememk wrote: »

Prediction for Dec : Website :52 kWh, but Id say it would be more like 40.

5.6kwp, SE, No battery, HW divert, Donegal Low angle (15 degrees), Have Some shading in the low sun - Panels are shaded until at least noon now in dec.

-This has been my Dad's Array, Mines going up in January, 7.2kWp (20 panels) on a 6kwp inverter, Solartricity wouldn't warranty a 8.6kWp array. (24 panels)

Also will have 10kwh of BYO battery storage attached to it.. Currently fine tuning the settings on that now, Charging on Night rate, discharging during the day. Just waiting on a spell of dry weather to get on the roof safely.

Quite close to the Prediction though.

Generation : 49.6kWh
Solar Use(ex divert) :39.2kWh (79%)
Divert : 4.2 kWh (22%)
Export :6 kWh

website Prediction for Jan : 73kwh, But id still think it will be in the 60's due to shading.

Geeyfds53573

bod71 wrote: »

Dec Gen. 46kwh.

Do you know the degrees SE and NW your facing?
Slope of roof? Any shading?

bod71

Geeyfds53573 wrote: »

Do you know the degrees SE and NW your facing?
Slope of roof? Any shading?

Around 130- 310 degrees. 35 slope, shading from tree on SE panels from Oct.

DrPhilG

DrPhilG wrote: »

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

Generation – 106.4kWh
Export – 0.6kWh
Import – 520.4kWh

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

Generation – 68.3kWh
Export – 0.3kWh
Import – 855.4kWh

Best day - 6th, 5.9kWh
Worst day - 26th/28th, 0.5kWh

Totals so far:
August - 572.1kWh
September - 437.2kWh
October - 254.3kWh
November - 106.4kWh
December - 68.3kWh

irishchris

2.88kwp South West facing

December gen: 70kwh. 3kwh short of November but with 24 power cut during recent storm so not far off.

Only installed in October
Oct:152.5 kwh
Nov:73.8 kwh
Dec:70 kwh

Looking forward to heading towards spring and seeing longer days

handpref

5.4kwp System

East - West Split

Total for December 19.90 kw’s

Mickeroo

Mickeroo wrote: »

July: 191.7kWh (logging only started on the 17th)
August: 397.8kWh
September: 299.1kWh
October: 226.1kWh
November: 72.5kWh (Ouch!)

December: 66.9kWh

3.7kWp S/SW facing