Solar PV Performance Thread - Post your monthly output

Winterman1234 · 29-02-2020 10:53pm

2.5kw south east facing donegal

February Generation -82 kWh
Grid consumption - 127kWh
Hot Water(Eddi) - 38kWh

MAULBROOK · 01-03-2020 9:53am

MAULBROOK wrote: »

System 4.8kw SE north Wexford

2020
Jan 130.6 kw

2019
December 94 kw
November 120.8 kw

Getting 3 more panels added at the end of Feb.
The company are adding them for nothing as a thank you for some good sales leads.

South East in north Wexford.
6.2kw (up graded from 4.8kw on feb 25)
Feb 249.5kw generated

handpref · 01-03-2020 10:12am

Shefwedfan wrote: »

Those with givenergy, is the website down? I cant get on since Thursday

It’s been down all right, back up as of this morning.

February -160 generated
5.4 east west

joujoujou · 01-03-2020 10:18am

SSW facing 4.3 kW, Mayo/Roscommon border.

157.7 kWh in February.

Worst daily yield - 0.9 kWh on 7th.

Best daily yield - 15.8 kWh on 27th.

Average - approx. 5.44 kWh per day.

garo · 01-03-2020 10:19am

February
Expected 143
Actual 165
4.8 kW E/W 24 degree tilt

Good month to make up for the poor Jan. March expected is 291 so we’re really starting to ramp up now.

Valhallapt · 01-03-2020 10:21am

Screenshot 2020-03-01 at 09.17.41.png

219.9Kw For February from 5.4Kw SSW panels in Kildare

eamon_l · 01-03-2020 10:46am

102kWh produced since the 14th Feb when my system was reconfigured. 4.2 kWh system on an East/West uneven split

Shefwedfan · 01-03-2020 2:46pm

255.1 generated in Feb
175.2kWh battery throughput
1107.60kWh House Consumption
71.3kWh exported to the grid
965.5 Grid import

Gumbo · 01-03-2020 10:02pm

Gumbo wrote: »

3kW system in Dublin 11.
South facing.

Jan 2020 - 114.18 kWh generated.

Feb : 171.33 kWh generated.

unkel · 02-03-2020 11:30pm

Shefwedfan wrote: »

1107.60kWh House Consumption

:eek:

That is 4 times as much electricity use as the national average!

Shefwedfan · 02-03-2020 11:38pm

unkel wrote: »

:eek:

That is 4 times as much electricity use as the national average!

Heavy on electricity

championc · 03-03-2020 12:20am

Shefwedfan wrote: »

Heavy on electricity

Have you a replica of Hillsborough in your back garden or something ???

garo · 03-03-2020 9:33am

Infrared lamps and hydroponics?!

Shefwedfan · 03-03-2020 3:56pm

garo wrote: »

Infrared lamps and hydroponics?!

Its a 50/50 ratio between night/day so not too bad.......

Winterman1234 · 05-03-2020 12:33am

Sorry for the silly question i'm only new to this pv, my installation is just over a month running.
Today was the best date yet with 9.8kWh from a 2.48kw system. I wasnt at home today, but from what wife tells me sun shone strong with blue skies most of day. Viewing gen data from today I see I peaked at 1.7kw for a couple of hours around midday, last week in between the hail showers, I seen the system peak at 2.15kw for a period. Would several hours of continuous march sunshine heat panels enough to reduce efficiency or was there just very high level cloud not visible to naked eye. Sorry for stupid question just curious what other people are maxing out at this time of year, Donegal, facing sse,roof angle 35°.

rolion · 05-03-2020 1:05pm

@springman1234

Not sure that i get your question...there are no stupid Qs only stupid As...
The panels will not deteriorate by being exposed to Sun... unless they are damaged by heavy rain drops or physical objects or counting years and years of usage. Some good quality panels are designed to work with a 80% efficiency for maybe 25 years.

What you need to see is how PV cells are harvesting the sun's photons at different times of the day and angle / exposure.
Thats will explain your curiosity and you'll see the relation between sun-clouds-cells.

Below is a top, perfect, desired by all of us curve , representing full harvesting of the photons.
Maximum production for a fixed system.
Some panels are positioned East West and the curve is getting more square_ish in the top left and in top right,matching exposure in early in the morning,late in the evening.

Below is one curve that everyone hates as is so unpredictable and practical unusable unless you have a big PV system installed power .

rolion · 05-03-2020 1:15pm

But, whats is the most important aspect of reporting and i see no one touch it here...kind of nice saying i've produced 10Kwh today but actually i had to import as well few KWh from the grid as my house had a spike demand at that hour and PV generation didn't full filled the numbers.

The key to self consumption (drop the bills and the eco fancy words) is H O W to match the PV generation with your house consumption and optimise that process.

Below,is a graph from one of the good days when house was running 100% on the PVs from morning till afternoon.
No matter how much was the PV production,i was using none of the grid based energy ! Zero KWh imported from the grid ...with the PV excess diverted in the cylinder.

That's the right question...

championc · 05-03-2020 2:26pm

What software are you using ?

Is anyone out there collecting data directly from RS485 ports ?

Shefwedfan · 05-03-2020 10:10pm

Just wondering what people are using to monitor solar generation and can it be displayed somewhere in the house. I have online givenergy website but its fairly sh*t to be honest. Half the time I check the zappi to see the proper numbers....

dan.lambert · 06-03-2020 4:38pm

Good Afternoon, i thought id sign up to provide some support for several people on here that seem to be struggling to understand the data displayed on the GivEnergy monitoring portal. What seems to be the problem?, without feedback we can not improve this service.

dan.lambert · 06-03-2020 4:41pm

Please explain what information you are misinterpreting. if the inverter is connected to a class 1 billing meter (Import/export meter), the information should have an accuracy within 0.01%, which in fairness is a lot more accurate than a standard CT for reading grid.

Shefwedfan · 06-03-2020 5:04pm

Hi Dan, I am only after getting install in Jan so new to this. From my own personal point of view. The website is good. The issue I have is logging onto it. I had a cheap Owl which I would have installed in the kitchen so I could just look over and see the current usage etc....

What I would like is something similar available. This is just in terms of seeing what usage in house is and what spare I have. So do I switch on washing machine etc. It's not for me, more for my wife etc. Even if I put onto a cheap android tablet and it could just sit in view.....just an instant gauge

With the website, you have included authentication code now. Which I guess is to stop people using autologin in software. THis is ok but it seems to log you out very quickly now, even if I click remember me it dumps we back out quickly. Maybe it is supposed to work like this?

For the Smart Charge, can additional options be added? so you could set Smart Charge 1 for Mon - Fri but then have Smart Charge 3 for Sat/Sun?

Smart home coming soon? whats this?

Now none of these are show stoppers or anything. Just nice to have and the system is working great for me. Currently it has my battery full and filling up my car battery now :-)

reklamos · 06-03-2020 5:12pm

rolion wrote: »

But, whats is the most important aspect of reporting and i see no one touch it here...kind of nice saying i've produced 10Kwh today but actually i had to import as well few KWh from the grid as my house had a spike demand at that hour and PV generation didn't full filled the numbers.

The key to self consumption (drop the bills and the eco fancy words) is H O W to match the PV generation with your house consumption and optimise that process.

Here you go. Here is yesterday which was not the best day of the week as only 11.9kWh got generated.
This shows Consumption vs. PV generation

Import vs. Export

Last 60 days of Import vs. Self generation

As the weather was pretty good I was only importing ~4.5kWh since Saturday.

championc · 06-03-2020 7:57pm

reklamos wrote: »

Import vs. Export

As the weather was pretty good I was only importing ~4.5kWh since Saturday.

Maybe I'm missing something but from that Import / Export graph, you appear to have Imported roughly 5kw in just a single 24hrs

reklamos · 06-03-2020 8:04pm

championc wrote: »

Maybe I'm missing something but from that Import / Export graph, you appear to have Imported roughly 5kw in just a single 24hrs

That is correct, I meant to say I was importing ~4.5kWh a day since Saturday.

dan.lambert · 07-03-2020 9:51am

Shefwedfan wrote: »

Hi Dan, I am only after getting install in Jan so new to this. From my own personal point of view. The website is good. The issue I have is logging onto it. I had a cheap Owl which I would have installed in the kitchen so I could just look over and see the current usage etc....

What I would like is something similar available. This is just in terms of seeing what usage in house is and what spare I have. So do I switch on washing machine etc. It's not for me, more for my wife etc. Even if I put onto a cheap android tablet and it could just sit in view.....just an instant gauge

With the website, you have included authentication code now. Which I guess is to stop people using autologin in software. THis is ok but it seems to log you out very quickly now, even if I click remember me it dumps we back out quickly. Maybe it is supposed to work like this?

For the Smart Charge, can additional options be added? so you could set Smart Charge 1 for Mon - Fri but then have Smart Charge 3 for Sat/Sun?

Smart home coming soon? whats this?

Now none of these are show stoppers or anything. Just nice to have and the system is working great for me. Currently it has my battery full and filling up my car battery now :-)

The Capture on the login screen is a temporary feature as we had an unwanted, unapproved API that was pulling data 15 times every second resulting in a server crash. We are currently working on a secure API key for this instead of using the standard login.

We are also working on a new app for monitoring and will be released very soon.

Smart home coming soon. We are currently manufacturing a range of smart switches, sockets that will be integrated into the portal, however currently these are controlled through our other app “SAVEnergy” this can be downloaded from the App Store to add and control smart home devices.

I hope this answers all your questions

AidenL · 08-03-2020 10:45am

unkel wrote: »

:eek:

That is 4 times as much electricity use as the national average!

Shefwedfan wrote: »

Heavy on electricity

We used 1080 units in February, so I feel the pain.

Shefwedfan · 08-03-2020 11:02am

AidenL wrote: »

We used 1080 units in February, so I feel the pain.

In our last house, 4 bed semi D in Dublin we would of been about average

No such chance in new house, not even a heat pump installed yet. Year on year we are always about the same for the winter months. The night rate helps a lot and hopefully now the solar will help in summer so try to balance it out but winter months will be high

garo · 08-03-2020 11:22am

Care to share why the new house consumes so much more? I assume you have low energy lighting? Do you use an immersion? Electric cooker and oven?

AidenL · 08-03-2020 11:34am

Shefwedfan wrote: »

In our last house, 4 bed semi D in Dublin we would of been about average

No such chance in new house, not even a heat pump installed yet. Year on year we are always about the same for the winter months. The night rate helps a lot and hopefully now the solar will help in summer so try to balance it out but winter months will be high

Same here. That was 400 day units and 700 night approximately. On a Sunday, my Mrs would bake and do a laundry of ironing, plus the family dinner.Could use 30 units. And around 20 on an average at home Saturday.

I’ll have a heat pump installed in next few months, so the consumption will only go up!

AidenL · 08-03-2020 11:36am

garo wrote: »

Care to share why the new house consumes so much more? I assume you have low energy lighting? Do you use an immersion? Electric cooker and oven?

Speaking for me, all led lights, induction hob, 2 electric ovens, no immersion use.

House is 260 square m. Only 2 of us in it though!

Shefwedfan · 08-03-2020 11:42am

garo wrote: »

Care to share why the new house consumes so much more? I assume you have low energy lighting? Do you use an immersion? Electric cooker and oven?

It's really a huge combination of everything to be honest. I have installed all low energy everything possible, moved to smart home so things turn off/on auto. Even down to phone charger turn off during the day.

Small things add up, american fridge freezer, chest freezer, standalone drinks fridge, grid network, android boxes etc are on all the time. They all add up to put considerable load on the house even as a starting point. These cannot be turn off

As the house is over 3,000sqft and a bungalow the heating system is a monstor, when running it has 5 or 6 pumps going so it will be burning over 1kWh on its own. Two cookers as well.....

Shefwedfan · 08-03-2020 11:50am

AidenL wrote: »

Same here. That was 400 day units and 700 night approximately. On a Sunday, my Mrs would bake and do a laundry of ironing, plus the family dinner.Could use 30 units. And around 20 on an average at home Saturday.

I’ll have a heat pump installed in next few months, so the consumption will only go up!

Heat pump will be next job which will drive usage even higher :P:P

Then it will be time to look at wind as well as solar:eek:

championc · 09-03-2020 8:13am

Shefwedfan wrote: »

Heat pump will be next job which will drive usage even higher :P:P

Then it will be time to look at wind as well as solar:eek:

I can only assume that your "sleeping" house rate must be fairly high. Mine is averaging 250w per hour (so min 2kw every night between midnight and 8am)

AidenL · 09-03-2020 8:56am

championc wrote: »

I can only assume that your "sleeping" house rate must be fairly high. Mine is averaging 250w per hour (so min 2kw every night between midnight and 8am)

Mine uses 550w/hr overnight.

Shefwedfan · 09-03-2020 9:13am

championc wrote: »

I can only assume that your "sleeping" house rate must be fairly high. Mine is averaging 250w per hour (so min 2kw every night between midnight and 8am)

I guess you mean the base level? well thats what I call it

So with everything "optional" turned off. Mine sits around 500w per hour.....just to keep the house ticking over

reklamos · 09-03-2020 10:45am

Shefwedfan wrote: »

I guess you mean the base level? well thats what I call it

So with everything "optional" turned off. Mine sits around 500w per hour.....just to keep the house ticking over

Seems a bit high.
I have homelab(multiple servers, switches etc), 2 fish tanks and other essential stuff running 24x7 but my base load does not go above 400W.

Maybe the thing you call drinks fridge is a wine cellar under the house

dan.lambert · 09-03-2020 6:58pm

A Quick note to everyone. The GivEnergy IOS app should be back up and running. Please let me know if you need any assistance. Also please fell free to use the "Report a bug" feature on the monitoring portal. We rely on your feedback to improve the service. The monitoring portal is a very complex platform.
Regards
Dan

denismc · 09-03-2020 9:55pm

Great thread!
From my 2.08 kW system I got 129kWh for February, of this 112 was used and 17 kWh was exported.

I use the Myenergi app to record my usage but I notice it overestimates my usage by as much as 5% compared to what the inverter is telling me, anyone else experience this?

reklamos · 25-03-2020 12:08pm

We had some good days in March.
Can people share what was the best day so far orientation and location.
Also I'd be interested in efficiency(Total(kWh) generated per day divided by total PV(kW) rating) this will show how much everyone is getting out of 1kW of PV.
My best day: March 20th
Orientation: South
Location: Navan
Efficiency: 5.4kWh

eamon_l · 25-03-2020 12:53pm

My best day: March 22nd
Orientation: East/West split (1.2/3kWh)
Location: South County Dublin
Efficiency: 3.55kWh

mike_2009 · 25-03-2020 3:15pm

My best day: March 20th
Orientation: South (200 degrees)
Location: West County Dublin
Efficiency: 5.02kWh

rolion · 25-03-2020 5:08pm

Hi guys,

Whats the point in showing off daily outputs !?
You know that "our" weather is different from the front of the house to the one at the back of it !

Just post the link to your PV system,the public link and let people scan and view themselves.
Here is my ABB PV:
https://easyview.auroravision.net/easyview/?entityId=10278565

Happy harvesting..
Be good !

reklamos · 25-03-2020 5:35pm

rolion wrote: »

Hi guys,

Whats the point in showing off daily outputs !?
You know that "our" weather is different from the front of the house to the one at the back of it !

Just post the link to your PV system,the public link and let people scan and view themselves.
Here is my ABB PV:
https://easyview.auroravision.net/easyview/?entityId=10278565

Happy harvesting..
Be good !

Well Solis does not seem to have option for public link or I cannot find it.

rolion · 26-03-2020 10:57pm

reklamos wrote: »

Well Solis does not seem to have option for public link or I cannot find it.

I knew that ABB is a premium product,industrial grade inverter but i dont think other inverters haven't provided a way to see the results without logging on to their systems...
So,to see your parameters,you need to login everytime !??

reklamos · 27-03-2020 12:29pm

rolion wrote: »

I knew that ABB is a premium product,industrial grade inverter but i dont think other inverters haven't provided a way to see the results without logging on to their systems...
So,to see your parameters,you need to login everytime !??

It is not inconvenient as you can save login or if using app it is just one tap to open it.

The link you provided also provides basics and not usage and other stats. Maybe other providers consider it a security issue.

MAULBROOK · 31-03-2020 7:23pm

The sun sets on the last day of the month so let the numbers begin.

North Wexford

6.2kw facing SE 152

Total generated 575kw

Best day 31.4kw on the 22nd and 27th
Today 31.2kw

Exported 104.7kw
Imported 24kw
Eddie 128kw

markpb · 31-03-2020 7:52pm

Amazing month for us. We generated 230kW with a peak of 3.08kW today which is 99% of our system total. Best day was 21st at 13.5kW.

Our battery is fully charged by 2pm most days and we exported 30kW to the grid (no FiT) which isn’t too bad. We’ve only had it three months so we’re still learning how to make the most of it.

South Dublin, 5 panels SE and 5 panels SW at a 26 degree tilt, 3.1kWp.

MAULBROOK · 31-03-2020 8:00pm

markpb wrote: »

Amazing month for us. We generated 230kW with a peak of 3.08kW today which is 99% of our system total. Best day was 21st at 13.5kW.

Our battery is fully charged by 2pm most days and we exported 30kW to the grid (no FiT) which isn’t too bad. We’ve only had it three months so we’re still learning how to make the most of it.

South Dublin, 5 panels SE and 5 panels SW at a 26 degree tilt, 3.1kWp.

You will be watching evey weather app like us.
Once everyone in the house gets it and uses it at the right time, you will reap the rewards.
Best of luck

joujoujou · 31-03-2020 9:29pm

SSW facing 4.3 kWp, Mayo/Roscommon border.

March yield - 336.4 kWh.

Daily average - 10.85 kWh.

Worst - 1.1 kWh on 7th.

Best - 24kWh on 29th.

Struggling to retrieve other figures out of crappy solax website.

Solar PV Performance Thread - Post your monthly output

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