Solar PV Performance Thread - Post your monthly output

garo · 01-08-2020 12:21am

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

Gumbo · 01-08-2020 12:51am

3Kw system.
South facing.

276.4 kWh for July

DrPhilG · 01-08-2020 1:24am

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 · 01-08-2020 5:45am

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 · 01-08-2020 8:55am

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

mun1 · 01-08-2020 9:24am

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 · 02-08-2020 2:57pm

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 · 03-08-2020 9:11am

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

championc · 19-08-2020 4:31pm

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

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

championc · 21-08-2020 10:56am

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

DrPhilG · 27-08-2020 1:42pm

Nearly time for the monthly updates, but in the meantime I have a question.

How much of your generation do you manage to use? I have 6.2kwp system with 4.8kWh battery and I'm currently sitting at 71.5% usage and the rest exported.

I had 2 real howlers in there where I exported 38kWh across the 2 days as the sun was blazing and I wasn't home to charge the car or run washing cycles other than just 1 via timer.

I'd be on 78% if it wasn't for those 2 days kicking my ass.

unkel · 27-08-2020 4:47pm

The relevant percentage should be what you use excluding immersion diversion. The latter is not making you much money, even if you have a large array. With a medium or small array, it is quite likely costing you more money to self consume compared to exporting to the grid for free.

DrPhilG · 27-08-2020 8:21pm

unkel wrote: »

The relevant percentage should be what you use excluding immersion diversion. The latter is not making you much money, even if you have a large array. With a medium or small array, it is quite likely costing you more money to self consume compared to exporting to the grid for free.

True, I'd say I've only put about 20kWh into the immersion thus far.

garo · 27-08-2020 11:54pm

I don't have a diverter and am at 69% usage. But have worked from home this summer so dumped some excess into the hot water tank. If I wasn't at home I would probably be closer to 60%.

championc · 28-08-2020 12:10am

And August has been mediocre too, pushing % up

phester28 · 28-08-2020 9:19am

quick question. I have a solis inverter and wifi datalogger but its setup to show generation only. Has anyone added a CT clamp to the inverter and was it hard to setup. From what I can find out all I need to do is run a cat 5 cable into the house and put the CT on the main tail from the meter. What do I have to change in the software to show production vs consumption?

Or has someone a cheap different approach. Its a nice to have rather than a must have IMO

Mickeroo · 28-08-2020 9:48am

phester28 wrote: »

quick question. I have a solis inverter and wifi datalogger but its setup to show generation only. Has anyone added a CT clamp to the inverter and was it hard to setup. From what I can find out all I need to do is run a cat 5 cable into the house and put the CT on the main tail from the meter. What do I have to change in the software to show production vs consumption?

Or has someone a cheap different approach. Its a nice to have rather than a must have IMO

Is it the dongle that attaches to the inverter you have? My one shows my consumption and everything, maybe you have a slightly older version of the dongle?

phester28 · 28-08-2020 9:59am

Mickeroo wrote: »

Is it the dongle that attaches to the inverter you have? My one shows my consumption and everything, maybe you have a slightly older version of the dongle?

Its all brand new. The dongle does noting more than report data from the inverter to the cloud.

If you have a battery then you will have a more complete install as you the inverter needs to know when to charge and when to supply to the grid, and would have the CT by default. I am asking for anyone that has a fairly basic install or did it themselves.

The options would need to be changed in plant settings on your app

Mickeroo · 28-08-2020 10:03am

phester28 wrote: »

Its all brand new. The dongle does noting more than report data from the inverter to the cloud.

If you have a battery then you will have a more complete install as you the inverter needs to know when to charge and when to supply to the grid, and would have the CT by default. I am asking for anyone that has a fairly basic install or did it themselves.

The options would need to be changed in plant settings on your app

Ah sorry, I do indeed have a battery so that explains why I get more info.

championc · 28-08-2020 1:17pm

phester28 wrote: »

quick question. I have a solis inverter and wifi datalogger but its setup to show generation only. Has anyone added a CT clamp to the inverter and was it hard to setup. From what I can find out all I need to do is run a cat 5 cable into the house and put the CT on the main tail from the meter. What do I have to change in the software to show production vs consumption?

Or has someone a cheap different approach. Its a nice to have rather than a must have IMO

You would need to change the "on-grid type" within in plant - go the Other Info > area

Spocker · 28-08-2020 3:22pm

First time poster, my system was installed in July and is a Sonnen 5Kw battery & inverter with 7 * 320w Sharp panels, South East facing on the roof:

For Aug:

Overall Consumption 459.88 kWh
Self Production: 207.3 kWh (36.8%)
Additional Grid Purchase 290.64 kWh (63.2%)
Self Consumption 99.6%
Feed-in 0.4%

Nice graph

Gazzler82 · 28-08-2020 5:32pm

championc wrote: »

You would need to change the "on-grid type" within in plant - go the Other Info > area

Hmm. Have been having the same question. Is this what you are suggesting??

championc · 28-08-2020 6:08pm

Gazzler82 wrote: »

Hmm. Have been having the same question. Is this what you are suggesting??

Correct. Maybe you have the correct system selected but nothing is being recorded due to the clamp not being in place. You may need to configure it once connected because it's possible that it could maybe be configured as a limiter, which would then throttle production.

I don't know because I have a separate storage inverter

reklamos · 30-08-2020 10:46am

phester28 wrote: »

quick question. I have a solis inverter and wifi datalogger but its setup to show generation only. Has anyone added a CT clamp to the inverter and was it hard to setup. From what I can find out all I need to do is run a cat 5 cable into the house and put the CT on the main tail from the meter. What do I have to change in the software to show production vs consumption?

Or has someone a cheap different approach. Its a nice to have rather than a must have IMO

What you need st a meter on din rail with modbus interface that goes into your fuse box. From there you would run data cable(cat5 will do) to your inverter and configure inverter to talk to your meter.

mun1 · 31-08-2020 9:59pm

august 2020
3.7kw S/SW, 12 panels (8 south 35deg, 4 West vertical)

Total generated 324kWhr
Power bought from grid 188kWhr
Solar power to grid 106 kWhr
Monthly self use rate 64%

Winterman1234 · 31-08-2020 11:12pm

Winterman1234 wrote: »

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

August Values, South East facing 2.4kw,Donegal

Generation- 225kWh (Beating both June and July)
Grid Consumption - 98kWh
Hot Water Eddi - 86kWh
Lowest Daily Gen on the 4th - 1.1kWh
Highest Daily Gen on the 12th - 13.6kWh

Added bonus this summer has been doing the yearly switch, meaning I have paid nothing for electricity since mid April after receiving €175 switching credit from electric Ireland.

garo · 31-08-2020 11:13pm

garo wrote: »

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

August was the worst month since March.

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

August(kWh):
Production: 424 (462 predicted)
Consumption: 544 (512 pred.)
Import: 230 (131d, 99n) (203 pred.)
Export: 110 (153 pred.)

Best day: 8th: 26.7
Worst day: 16th: 2.7

Mickeroo · 31-08-2020 11:24pm

3.72kwp, SW facing, Connaught

July: 191.7kWh (logging only started on the 17th)
August: 397.8kWh (first full month with the system)

Gazzler82 · 01-09-2020 7:13am

August

238kWh
SE 3kw Cork
Best 14.3 on 12th
Worst 1.6 on 14th!

DrPhilG · 01-09-2020 9:33am

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

Generation – 572.1kWh
Export – 147.1kWh
Import – 302.4kWh

For some reason the myenergi hub won't give me monthly figures for Zappi & Eddi consumption. Maybe the units themselves will play ball, I'll check later. At a guess I'd say the Eddi got maybe 15kWh and the Zappi about 12 (8 of which was yesterday).

Worst day, 25th – 2.9kWh (thanks Storm Francis)
Best day, 8th – 35.8kWh

Also got my first electric bill since install, so a mixture of pre/post-PV.

€140, same period last year was €230 odd. Too early to draw too much from that of course due to variable like estimated meter readings etc but it’s a start.

KCross · 01-09-2020 9:44am

DrPhilG wrote: »

For some reason the myenergi hub won't give me monthly figures for Zappi & Eddi consumption.

They are rewriting that part of the app and have disabled monthly reports for now. I think there is a new version of the app coming in the next week or so and maybe then they'll allow the monthly reports again.

rx8 · 01-09-2020 9:46am

August figures:
4.2kwp E/W.
Monthly production - 314.7kwh.
Monthly consumption - 342.3kwh.
Worst day: 16th- 1.7 kwh.
Best day: 8th- 21.1kwh.
I- boost got 35.1kwh.

Last bi-monthly bill was €65, at the start of August. This was half of the previous 2 years at the same time. They're no DrPhilG figures but hopefully we'll have an Indian summer in September.

DrPhilG · 01-09-2020 10:10am

KCross wrote: »

They are rewriting that part of the app and have disabled monthly reports for now. I think there is a new version of the app coming in the next week or so and maybe then they'll allow the monthly reports again.

Ahh, didn't realise. Thanks. I thought something was set up wrong.

I wish they would provide a desktop version of the system too, makes it a little easier to dig for info.

DrPhilG · 01-09-2020 10:13am

Ps who's hot and who's not at the minute for electric suppliers? My SSE deal is ending soon.

rx8 · 01-09-2020 10:14am

DrPhilG wrote: »

Ps who's hot and who's not at the minute for electric suppliers? My SSE deal is ending soon.

I think Bord Gais direct has the best rates atm,
or you could sign up to "One big switch " and get 40% off with energia. Not available to me cos I'm with them atm,but changing mid month.

DrPhilG · 01-09-2020 10:26am

I was with Energia before, I'll check out bonkers shortly.

Gamma1 · 01-09-2020 10:26am

7 panels 2.1 kW tot
Sth facing
189 kWh produced August
100 kWh imported
Supplier Iberdrola

KCross · 01-09-2020 10:27am

DrPhilG wrote: »

Ps who's hot and who's not at the minute for electric suppliers? My SSE deal is ending soon.

For me it has always been a ping pong between Energia and Airtricity for the best rates for rural customer with day/night rate.... mine is up next week also so I'll be switching back to Airtricity again because Energia probably wont give me the new customer discount but I'll ask them anyway!

I looked a week or so ago and the rates I saw were
Airtricity - Day/Night 15.42/7.64 Via bonkers only
Energia - Day/Night: 14.22/6.83

championc · 01-09-2020 10:36am

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
July Yield - 261.88kw

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

Mediocre Month

August Generated - 254.10kw / Consumed - 330.95kw / Imported - 135.73kw / Exported - 13.34kw / Eddi - 22kw / Zappi 8.5kw
Batteries - Charged 147.64w / Discharged 123.4kw

Meter Readings 01326 (00347 Day / 00979 Night)

DrPhilG · 01-09-2020 11:07am

championc wrote: »

Exported - 13.34kw

How did you manage to export anything given that you have such a big battery?

I'm considering a change in the future from my Pylontech batteries, to a DIY build using recycled Leaf cells. I could switch from the 4.8kWh PylonTech I have, to about 6kWh of Leaf battery without much extra cost as I can sell the PylonTechs to fund the cells, BMS & install. I would then be able to expand that DIY system for a cost of around €60/kWh rather than about €330/kWh to add more PylonTech 2.4kWh modules.

championc · 01-09-2020 12:17pm

DrPhilG wrote: »

How did you manage to export anything given that you have such a big battery?

I'm considering a change in the future from my Pylontech batteries, to a DIY build using recycled Leaf cells. I could switch from the 4.8kWh PylonTech I have, to about 6kWh of Leaf battery without much extra cost as I can sell the PylonTechs to fund the cells, BMS & install. I would then be able to expand that DIY system for a cost of around €60/kWh rather than about €330/kWh to add more PylonTech 2.4kWh modules.

Good spot !!! My batteries are Lead-Acids - so you only have about 50% of usable storage at best. Lead-acids also have a very shallow curve for charging power above 80% charge, so on a sunny day, my batteries are at 80% by lunchtime. So I've a project now with LiFePO4's

E30M3 · 01-09-2020 3:06pm

Install completed on 5th August so production figures are for 6th 31st Inclusive.

South East
5.6 kw (16 350w panels, 12 East and 4 West facing)

Worst Day 16/08 - 4.2 Kwh
Best Day 08/08 - 29.9 Kwh

Overall 429.8 for the 26 days for average of 16.53 Kwh per day.

Still learning re maximising usage etc but the priority for me this month was to see the generation which seems right in line based on other folks figures.

unkel · 02-09-2020 12:23am

DrPhilG wrote: »

Ps who's hot and who's not at the minute for electric suppliers? My SSE deal is ending soon.

My contract is up in 2 weeks time, I checked yesterday and Energia has by far the best rates for electricity.

I renewed my gas with Flogas today. They offered me the best deal in the market. Quite refreshing. I wouldn't be having to switch providers every year if my current provider just gave me the best deal available in the market. So fair play to Flogas. Saved me a bit of hassle.

DrPhilG · 02-09-2020 9:09am

Yeah looking like a return to Energia for me.

Although I just double checked and my 12 months isn't up until November so things might change.

Winterman1234 · 02-09-2020 9:14am

The new company bright seem very good as well, with a good rural standing charge.

graememk · 02-09-2020 8:31pm

DrPhilG wrote: »

Yeah looking like a return to Energia for me.

Although I just double checked and my 12 months isn't up until November so things might change.

Winterman1234 wrote: »

The new company bright seem very good as well, with a good rural standing charge.

Yeah once most of your "day" useage is covered via solar, the standing charge will come into account much more than just the cheapest unit rates

Winterman1234 · 02-09-2020 11:57pm

graememk wrote: »

Yeah once most of your "day" useage is covered via solar, the standing charge will come into account much more than just the cheapest unit rates

Yes indeed during April/May billing period I averaged out at 2.6 units daily, so standing charge was as much per day.

MAULBROOK · 06-09-2020 6:55am

DrPhilG wrote: »

Yeah looking like a return to Energia for me.

Although I just double checked and my 12 months isn't up until November so things might change.

Stay away from Electric Ireland, low usage charges. Not good for a solar setup

Nelbert · 06-09-2020 6:03pm

Does anyone have a full year usage Vs previous year?
Be interested to see how much is saved off electricity bills when you average over the year.
We're above average elec consumers so would be good to see some of these impressive generation and reduced grid figures put in to the context of annual bill totals if anyone can?

championc · 06-09-2020 9:25pm

Nelbert wrote: »

Does anyone have a full year usage Vs previous year?
Be interested to see how much is saved off electricity bills when you average over the year.
We're above average elec consumers so would be good to see some of these impressive generation and reduced grid figures put in to the context of annual bill totals if anyone can?

You could just simply take people's generation minus any exported power, and multiply by about 20c per kw. So that's the absolutely maximum saving. Many of us are saving power to batteries and using up power to diverters, so possibly multiply your figure by about 0.7 to get a more real figure.

Solar PV Performance Thread - Post your monthly output

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