nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Child Item

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.

Find more posts tagged with

Quick Links

Comments

idc

Quote:
Originally Posted by mun1

Yep, missed a day ,

MAULBROOK wrote: »

Any moment now will be fine:):)

Too soon still - sun still out and producing 149W

MAULBROOK

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

March Total 494.6kw
Best day, Mar 13th 27.7kw
Worst Day Mar 10th 3.4kw
Exported 41.3kw
Imported 95.4kw
Eddie 136kw
Monthly self use 69.46%

February Total 219.3kw
Best day 25th 21.9kw
Worst day, 13th 0.2kw

mun1

Sun just set

5kw array (5kw since 17th march) (3.7kw South 35 deg slope 1.3kw West 90 deg)

March generated 243kwh
Best day 30th 22kwh
Worst day 1.3kwh

Self use 85%

Great to see the long days

mp3guy

mp3guy wrote: »

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

South: 285.30kWh
East: 170.20kWh
PV Total: 455.50kWh
Best Day: 25th (40.83kWh)
Worst Day: 23rd (1.00kWh)

Grid Import: 447.22kWh
Grid Export: 45.48kWh

South: 385.39kWh
East: 305.41kWh
PV Total: 690.79kWh
Best Day: 26th (44.09kWh)
Worst Day: 4th (4.52kWh)

Grid Import: 674.21kWh
Grid Export: 141.55kWh

House Usage: 1066.07kWh
Car Usage: 131.26kWh
Water Usage: 26.12kWh

Last month without the west array.

garo

Gonna compare to last year from now on:

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

March 2020(kWh):
Expected: 291
Actual: 381

Best day 22nd: 18.6
Worst 9th: 2.3

Imported 200 units from the grid and exported 99.

March 2021(kWh):
Production: 332.4 (291 predicted)
Consumption: 711
Import: 404 (180d, 224n)
Export: 25.6 ( pred.)

Best day: 29th: 19.1
Worst day 3rd: 2.1

Last March was absolutely brilliant. But this one wasn't too bad ether. After a slow start things started ramping up after the 10th. Exported around a quarter of what I did last year thanks to the Zappi. Apart from a small charge on the 15th have only charged the car from the sun.

bod71

bod71 wrote: »

Feb Gen. 103kw. Best day 7.5 Worst 0.7. 4kw SE/NW.

Mar Gen. 200kw. Best day 12.5 Worst 1.4.

ec_pc

4.8 KW panels, Solax 6.3 Kw battery, Solax 5 Kw inverter, south south west facing

March 2021 :
Generated 437.5kw
Sent to grid 59kw
Best day - 30th March 23 KW
worst 4th March 7Kw

ParkRunner

First go at this with 16 panel 6kw south facing system and hot water diverter going live on March 16th on the south east.

Generated 226kWh
Consumed 116kWh
Exported 109kWh
Imported 110kWh
Eddie 66kWh
Green 51%

Best day March 17th 29.4kWh
Worst day March 28th 4.1 kWh

Overall we could have managed usage a bit better but not a bad start & great to have so much hot water. A lot of export to the grid and am hoping FIT and an EV will cover a good bit of this. Future proofed while the grant was still going but held off on a battery. First electricity bill due soon.

championc

championc wrote: »

3.6kw South Facing - South Dublin - 22 deg slope - 10kWh LiFePO4 Batteries
Live System Link - https://www.solarmanpv.com/portal/Terminal/TerminalMain.aspx?pid=95390

2020
January Generated - 75kWh
February Generated - 121.55kWh
March Generated - 200.59kWh
April Generated - 279.11kWh
May Generated - 396.34kWh
June Generated - 264.13kWh
July Generated - 261.88kWh
August Generated - 254.10kWh
September Generated - 268.62kWh
October Generated - 151.43kWh
November Generated - 90.4kWh
December Generated - 56.47kWh
2020 ANNUAL GENERATION - 2.41MWh

2021
January Generated - 56.14kWh
February Generated - 142.04kWh

March Generated - 269.23kWh / Consumed - 411.67kWh / Imported - 208.08kWh / Exported - 11.3kw / Eddi - 36.0kw / Zappi 0kw
Batteries - Charged 191.62kw / Discharged 161.89kw (84%)

Meter Readings 03517 (00772 Day - up 34 / 02745 Night - up 185)

Overall, an excellent month especially in the past week. Battery management working well with just over a unit of full cost power used per day

Alkers

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

December total 58.4kWh
January total 82.6kWh
February total 148.3kWh
March total 222.8kWh

Highest - Mar 30th (14.3kWh)
Lowest - Mar 3rd (1.4kWh)

irishchris

2.88 kwp West facing: 172.7kwh
3.6 kwp South/SW facing: 189kwh (went live 6 march)

Total produced: 361kwh

pjordan

Near Westport

4.6kw South facing

Total March: 263.1kw
Best day: 16th March - 24kw
Worst day: 3rd March - 1.4 kw

Mickeroo

2020 (5.5 months): 1,254.1kwh

2021
January: 89.0kwh
Feb: 145.7kWh
March: 210.7kWh

3.7kWp S/SW facing, Mayo

Winterman1234

Winterman1234 wrote: »

February Values,South East facing, 2.4kwp,Donegal

(Predicted value - 94kWh)

Actual Gen - 87kWh
Grid Consumption - 147kWh
Hot Water Eddi - 27kWh
Export - 7kWh
Lowest Daily Gen on the 13th - 0.1kWh
Highest Daily Gen on the 25th - 8kWh

March Values, South East Facing, 2.4kwp, Donegal, No Battery

(Predicted value - 168kWh)

Actual Gen - 110kWh (March 2020 — 165kWh)
Grid Consumption - 128kWh
Hot Water Eddi - 41kWh
Export - 17kWh!
Lowest Daily Gen on the 9th - 0.2kWh
Highest Daily Gen on the 16th - 9.7kWh

DrPhilG

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

Generation – 316.9kWh
Export – 19.9kWh
Import – 391.6kWh

Best day - 16th, 23.4kWh
Worst day - 9th, 1.5kWh

Pretty crap month again in Donegal, as I see others had too. A few utterly miserable rainy days generating about 2kWh and the occasional mad spike up to 20+.

My prediction was 387, only got about 82% of that.

Total since install at the end of July now 2043.3kWh. If I get close to my estimates I'll end up with around 4500kWh for the calendar year.

reklamos

reklamos wrote: »

4.5kWp South facing in Meath
Feb Total 188.1kWh
Best day, 25th 21.5kWh
Worst day 7th 0.6kWh
Exported 0.3kWh
Imported 339kWh
Monthly self use 64%

4.5kWp South facing in Meath
March Total 316kWh
Best day, 30th 23.8kWh
Worst day 3rd 2kWh
Exported 0.8kWh
Imported 273kWh
Diverted 18.2kWh
Monthly self use 66%

slave1

Midlands
4.1kWp SW, 3.3kWp NE
603kW imported
346.5kWh Generated, approx 85%-90% from the SW string
338kWh consumed
158kWh to Eddi
23.8kWh to Zappi
Highest was 30th, 27.8kWh
36% self sufficient for month
Monthly cash saving based on average daily load and all non-load items like dishwasher/washing machine/immersion at night rate, €38.76

handpref

5.4kwp east west split
East of country

280kwh solar generation

idc

March Generated 361.4 kWh - 4.65 kWp (2.17 SE, 2.48 SW) North Dublin
89.71 kWh exported. Not sure how much Eddie used (i don't have hub and monthly figure is now 0 for new month!!)

Best Day 30th - 23.1 kWh
Worst Day 3rd - 2.2 kWh

PV generation 102% of projection

uphillonly

South Dublin 6 kW.
S 2.8 kW, E 3.2 kW. 5.8 kWh battery

Dec 2020: 63.4 kWh
Jan 2021: 78.5 kWh
Feb 2021: 186.7 kWh
Mar 2021: 354.4 kWh

Highest day: 30th 22.1.
Lowest: 3rd 2.0.
Self consumption: 93.6%
Self sufficient: 41.8%

Car has been running on sunbeams only since late Feb.

Bifacial panels living up to the marketing hype. 7 x LG 410w on the south array for total 2,870w. They have maxed out at 3,330w so far, 476w per panel - 116%. They regularly pass 2,900w.

championc

idc wrote: »

Not sure how much Eddie used (i don't have hub

Just use the front panel and look in the Savings Menu

graememk

graememk wrote: »

March Prediction : 370kWh

Just going to talk about my array from now on.
Added 4 more panels mid march bringing my total panel wattage to 8.64kWp on a 6kw inverter,
12 degree roof, NE/SW 50:50 (new march prediction - 439.75)

Have started counting solar generated during night rate (started at nearly 7 am today, also discharging batteries during nightrate too a bit as an experiment, If I know tomorrow is going to be a good day.

March
Generation : 432kWh
Solar Used Directly : 199.2kWh - €30.68
Solar Used Nightrate : 3.3kWh - €0.2442
Battery Charged : 200.2kWh
Battery Discharged Day : 155.6kWh - €24.77
Battery Discharge Night : 5.2kWh - €0.38
EVSE Divert : 6.1kWh - €0.45
Battery Discharged From Grid Charging : 73.4kWh - €4.55
Export : 23.2kWh
Total Savings : €60.83

April Prediction - 779.66kWh

_Puma_

West of country. 5kW inverter with 14x315w panel array SW Facing at 30 degree pitch.
March total:284.2 kWh
Best day: 30/03/21 24kWh
Worst day: 03/03/21 1.7kWh

Have decided not to buy a battery but have bought a handy device that pairs with my PV plant . Have it in the kitchen so can see when I'm exporting at a glance and it gives some real time feedback in comparison to my logger. (to the point where sticking on the kettle you immediately see the spike). Has helped in getting into habit of using what I'm generating.

idc

championc wrote: »

Just use the front panel and look in the Savings Menu

It only shows zero now for April. How do I see previous month details?

championc

idc wrote: »

It only shows zero now for April. How do I see previous month details?

Ah right, ok, you were too late

Gazzler82

3kw Cork SSE

March
150.5kwh
Best 31/3 10 kWh
Worst 4/3 0.4 kWh

slave1

graememk wrote: »

Just going to talk about my array from now on.
Added 4 more panels mid march bringing my total panel wattage to 8.64kWp on a 6kw inverter,
12 degree roof, NE/SW 50:50 (new march prediction - 439.75)

Have started counting solar generated during night rate (started at nearly 7 am today, also discharging batteries during nightrate too a bit as an experiment, If I know tomorrow is going to be a good day.

March
Generation : 432kWh
Solar Used Directly : 199.2kWh - €30.68
Solar Used Nightrate : 3.3kWh - €0.2442
Battery Charged : 200.2kWh
Battery Discharged Day : 155.6kWh - €24.77
Battery Discharge Night : 5.2kWh - €0.38
EVSE Divert : 6.1kWh - €0.45
Battery Discharged From Grid Charging : 73.4kWh - €4.55
Export : 23.2kWh
Total Savings : €60.83

April Prediction - 779.66kWh

Prob been said before but in case it saves you money, there are cheaper Electricity Plans out there compared to your 15.4c day/7.4c night rate, these are inflating your "savings"...

graememk

slave1 wrote: »

Prob been said before but in case it saves you money, there are cheaper Electricity Plans out there compared to your 15.4c day/7.4c night rate, these are inflating your "savings"...

I'm in contract until July. Wouldn't switch me before that.

Hopefully going onto the ev tariff, I'm on about 90%
night rate., Must double check my day rate, thought it was 14 something.. oh and it's going up in april I think too isn't it?

tails_naf

March Stats
6.4kWp (4.5 SSE, 1.9 WSW) , 4.8kWh battery, Eddi, dumb electric car charger – Tipperary

Generation – 436 kWh
Export – 25.6 kWh
Divert – 119 kWh
Import – 384 kWh

Best day - 19th, 31.6 kWh
Worst day - 8th, 1.9 kWh

Totals so far:
Month|Generate (KWh)|Export (KWh) |Divert (KWh) |Import (KWh)
November | 163 | -- | -- | 443
December | 117 | 0.5 | 22 | 552
January | 163 | 1.5 | 29 | 709
February | 213 | 9.6 | 47 | 496
March | 436 | 25.6 | 119 | 384
Total | 1092 | 37.2 | 217 | 2584

March was a good month - though the number of units purchased may be higher than expected given the generation amount - mostly due to some night-time use (half-filling the battery on night rate) - that's turned off now until next winter. Lots of divert, and a fair bit going back to the grid - both of which I'm sure will be excessive as the summer months come. I'll have to look into getting a Zappi...

slave1

tails_naf wrote: »

... I'll have to look into getting a Zappi...

Do, our Leaf has only been charged once via the Grid since end of Feb, granted it's Lockdown mileage but still...