Solar PV Performance Thread - Post your monthly output

I'll chuck stats up soon, although I changed from 6.2 to 7.44kWp during the month so the comparisons to last year won't be worthwhile.

7kWp W Dublin. 20kWh battery

Production: 878 - last year was 850 which is odd as last year's May was a much nicer month weather-wise

Consumption: 738

Import: 8 (as per Solis but real life is probably 30kwh or so, just from the daily trickle)

Export: 171 (last year 435 but 5kwh battery at the time)

Best day: 19th: 46

Worst day: 17th: 9

Car: 173

I only added a 2.7kwp array a few weeks ago, it should contribute significantly, I'm up to about 10-11kwp now, all south facing in sunny south county Dublin 😁

7th Month

Dublin - Lucan - May 22 - 7.12kW total installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

Total Generation: 796kWh (217kWh consumed directly, 166kWh into battery, 413KWh to grid)

Best Day: May 19th - 40.2kWh

Worst Day: May 17th - 9.0kWh

Total Consumption: 414kWh (92% Solar:8% Grid Import (32kWh))

Milestones:

49kWh to Eddi

3rd Month Generation Exceeds Consumption

12 Days no import 8, 14, 19, 20, 22, 23, 24, 25, 26, 27, 29, 31

Added to existing south facing string. Its now maxed out with 13 panels. Might fit another 2 on the house if I ever find any more of the 310w floating around.

Upping the 5kW inverter to 6kW next week.

Did you buy the inverter already? I heard solartricity are sold out of Solis, waiting for another batch from China to land in July. Also, is that a wise upgrade? Very little of the time will you actually produces over 5kW once you go to a 6kW inverter. The difference is marginal, worth probably only a fraction of the upgrade cost of the inverter?

Mate just bought an as good as new 5kW Solis hybrid inverter for €600 with all the bits included even wifi dongle. Jealous as that would suit me perfectly too!

Ah the charge / discharge makes a difference for sure. I was thinking of the Solis range and the 5kW and 6kW hybrid inverters both charge and discharge at 5kW max, so no difference between the two. Would you not just swap the units yourself? It's an easy DIY job. But I guess if your installer does it, it keeps you in their good books in case you need support from them in future.

I'm limited myself to 3.2kW charge and discharge and I've near 11kwp of south facing, so even with my high base load, I've started to export a lot recently. And don't really want to micro manage. I guess a wifi new model Zappi might be ordered soon...

5.4 kwp east west split

516 kWh produced for May

May Stats

6.2kWp (2.8 south/3.4 west), 20kWh battery, Zappi & Eddi – Donegal

CHANGING ON MAY 21ST TO:

7.4kWp (4.03 south/3.4 west), 20kWh battery, Zappi & Eddi – Donegal

Generation – 699.9kWh

Export – 24.8kWh

Import – 145.2kWh

Best day – 28th 40kWh

Worst day - 2nd, 10.8kWh

Days with less than 1kWh purchased - 21

Didn't bother with the comparisons to last year, no point since the capacity increased considerably.

Yeah last May was nuts. Even with the additional panels this year I didn't surpass the 2021 figures. Generated about 75kWh less.

1.125 MW for June.

Nice to break through the megawatt barrier for first time since adding the new string. System was down for two days with adding battery system so good return considering.

Record for me this month: 16kWp DC / 11kWp AC Cork:

South: 687.63kWh
East/West: 1266.29kWh
PV Total: 1953.92kWh
Best Day: 27th (101.55kWh)
Worst Day: 9th (17.23kWh)

Grid Export: 677.87kWh
Grid Import: 74.02kWh
Surplus Energy: 603.85kWh

CO2 Saved: 652.17kg

House Usage: 852.51kWh
Car Usage: 296.80kWh
Water Usage: 200.76kWh

Just looking at my numbers for June and its looking like its going to be below par month for me based on the PVGIS Sarah estimates. I need 60 kWh from today and tomorrow to get me above the estimate and these two days aren't looking great...neither is the next week

Will certainly be below March April & Mays numbers

Barring a disaster tomorrow I'll meet my expected target for the month.

Mind you my target is just what I got last year, adjusted for the additional capacity. So monthly target is 801kWh. I'm now on 784kWh so only need 17kWh tomorrow.

700 in May and 657 in June. First year so still learning what's normal.

really happy with the self-use rate. 5kw battery on a 6.6kw system.

June Stats

7.44kWp (4.03 south/3.41 west), 20kWh battery, Zappi & Eddi – Donegal

Generation – 809kWh

Export – 50.3kWh

Import – 3.8kWh

Best day – 4th, 50.3kWh

Worst day - 2nd, 11.5kWh

Days with less than 1kWh purchased - all of them.

9.86kwp (2.88 West & 6.98 South)

June 2022:

Generation: 1012kwh

Import: 18kwh

Export : 556kwh --- FIT@13.5c = € 75

June 2022

6.1 kWp South facing in Cork

Generated 742 kWh

Used 327 kWh (44%); exported 415 kWh

Money Saved on energy bill from PV for this month 327kWh * €0.30 = €98.10

Estimated Potential FIT @14cent/unit = €58.10 (not realised as don't have smart meter and I am with EI so just a hopeful guess)

Overall for the month it was below expected and even less than March, but overall my system is about 11.5% over the estimated PVGIS SARAH estimate. I included this month how much my PV system saved me on my electricity bill as its a simple calc and it should be useful for people to see the potential.

8th Month

Dublin - Lucan - June 22 - 7.12kW total installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

Total Generation: 764kWh (224kWh consumed directly, 158kWh into battery, 382KWh to grid)

Best Day: June 20th - 41.0kWh

Worst Day: June 5th - 7.0kWh

Total Consumption: 420kWh (91% Solar:9% Grid Import (39kWh))

Milestones & Info:

59kWh to Eddi

4th Month Generation Exceeds Consumption

12 Days no import (same as May) :: 4, 7, 8, 11, 15, 19, 20, 21, 23, 25, 26, 30.

Passed 3MWh generated since install last October.

Monthly Expected FIT €53.48 :: Money Saved on Energy from PV :: €85.69 :: Total Savings €139.17 for June.

Expected FIT since Feb 15th €188.30 :: (24KWh Feb, 254KWh Mar, 272KWh Apr, 413KWh May, 382KWh June : Total 1325KWh)

6.2Kwp

only gave 8% to the grid

7kwp West Dublin, 20kwh battery, S facing

Best day 25th: 47kwh

Worst day 5th: 7kwh

Battery efficiency: 91%

Just to compare with last year which was about 100kwh better