Daily pv production

5uspect

Better than my 1.2 kWh here in Dublin.

Winterman1234

5uspect wrote: »

Better than my 1.2 kWh here in Dublin.

Another 0.2kWh today

championc

5uspect wrote: »

Better than my 1.2 kWh here in Dublin.

My god, I know Dublin is big, but I got 4.5kWh in Sth Dublin today

garbeth

Got 3 kWh today in Kildare

idc

4.6 kWh North Dublin (4.65kWp)

5uspect

championc wrote: »

My god, I know Dublin is big, but I got 4.5kWh in Sth Dublin today

Ah, our orientation isn’t great.

garo

Indeed. Winter is when orientation and roof slope causes dramatic differences in daily output. Like a few other posters here I have a E/W aspect with the E panels shaded for 3 hours by the neighbours roof when the sun is low.
With a 4.8 kW install split evenly, the max production this month was the 3rd at 6.7kWh. I won't see those figures again until late Feb. If I had a S facing roof at a steeper angle I would be seeing double digits on full sun days well into December.

slave1

I had my installation earlier this month and at just over 70kWh produced so lots of shading impacting, pretty sure I'm going to go for Optimisers on my highly shaded front of house aspect

championc

Or maybe consider Micro-Inverters, and therefore take shaded panels off the string.

People who may have east and west, who may have a south facing shed or some small surface, should consider adding standalone panels with Micro-Inverters, rather than trying to get a second separate inverter or adding to an easy or west string

championc

For those with new systems, compare your output and post even your partial month output. It's a good way to verify your new system is performing well

https://www.boards.ie/vbulletin/showthread.php?p=115474021

graememk

Today won't be a good solar day, heavy shadowing caused by some weird white stuff..

Currently on 0 watts

DrPhilG

graememk wrote: »

Today won't be a good solar day, heavy shadowing caused by some weird white stuff..

Currently on 0 watts

I've only got very light snow falling at the minute but producing 200w currently. Pleasantly surprised.

graememk

Yeah it's not getting through this

DrPhilG

graememk wrote: »

Yeah it's not getting through this

Lol, probably not...

Hardly worth brushing it off either I suppose.

graememk

DrPhilG wrote: »

Lol, probably not...

Hardly worth brushing it off either I suppose.

Brushed them off, up to 800w

Geeyfds53573

graememk wrote: »

Yeah it's not getting through this

Where you at?

graememk

Geeyfds53573 wrote: »

Where you at?

North Donegal. Shouldn't have much more snow today, met.ie shows any that's coming in to miss us.

DrPhilG

graememk wrote: »

North Donegal. Shouldn't have much more snow today, met.ie shows any that's coming in to miss us.

North east Donegal didn't get anything like that amount. Fell lightly for about half an hour but nothing lasted.

On topic, a very respectable 4.1kWh today.

1st - 1.8
2nd - 2.7
3rd - 4.1

mp3guy

Speaking of brushing off panels, has anyone used anything to clean their's from the ground? A long poll with a sponge wiper?

graememk

mp3guy wrote: »

Speaking of brushing off panels, has anyone used anything to clean their's from the ground? A long poll with a sponge wiper?

That's what I used but from the top of the roof, couldn't stand on the roof, your feet would be above your head before you know it.

mp3guy

Where can you buy these types of things? Woodies/B&Q?

graememk

mp3guy wrote: »

Where can you buy these types of things? Woodies/B&Q?

Local Agri co op? Look for something to wash trucks with. i think the one i have extends to about 3m

unkel

mp3guy wrote: »

Speaking of brushing off panels, has anyone used anything to clean their's from the ground? A long poll with a sponge wiper?

I usually upgrade the panels by the time they get dirty :pac:

But seriously, I haven't cleaned any of mine. Doesn't seem to affect performance. But of course if you have trees near them or a lot of bird sh1t on them, you might need to clean them. I would just use a power hose I think.

DrPhilG

I exported 0.2kWh today, lol.

After a horrendous few days of storms with damn all production, the sun came blazing out today even though the temperatures stayed in the minus most of the day.

This was my south facing set at 9am:


Very heavy fog around all day too, but lucky for us we're on top of a hill. Went out this morning and half a mile from home we descended into the fog bank and didn't come out of it again til we got home.

Meanwhile up above the clouds, we generated 5.9kWh.

Winterman1234

Managed 3.3kWh from our South East facing 2.48kw system located here on the donegal coast. Could have done better only the fog rolled in after lunch.

mp3guy

A little bit different, completely grey and overcast all day, 1.3kWh from 10.24kWp.

DrPhilG

mp3guy wrote: »

A little bit different, completely grey and overcast all day, 1.3kWh from 10.24kWp.

Damn, I nearly caught you.

1.2kWp up here. Similarly miserable day.

DrPhilG

January has started well.

After endless crap in December, I'm well over target so far. Predicted average for January is 2.8kWh.

1st - 2.4
2nd - 5.2
3rd - 5.5

phester28

I must assume my setup is just not optimal.

Have a look here: can anyone compare the panel current they see for a string (east or west would be the best comparison) for a series string
As I understand it as the voltage for each panel is cumulative in normal strings it would be easier to compare I for each string.
1.5KwH today and it was lovely and sunny all day (all be it cold)

I can only get 300wp out of my 1.5/0.9 (2.5Kwp) East West on a winter day
winter sunny day.png

Red is current on the 1.5Kwp (5 Panel) that sits at 160-170V
Blue is current on the 0.9Kwp (3 panel) that sits at 85-100V

championc

phester28 wrote: »

I must assume my setup is just not optimal.

Have a look here: can anyone compare the panel current they see for a string (east or west would be the best comparison) for a series string
As I understand it as the voltage for each panel is cumulative in normal strings it would be easier to compare I for each string.
1.5KwH today and it was lovely and sunny all day (all be it cold)

I can only get 300wp out of my 1.5/0.9 (2.5Kwp) East West on a winter day
winter sunny day.png

Red is current on the 1.5Kwp (5 Panel) that sits at 160-170V
Blue is current on the 0.9Kwp (3 panel) that sits at 85-100V

I think your Red are the 3 panels East and the Blue is the 5 panels West, based on your graph. However, what I don't understand is the Yellow. I cannot see how the yellow can be so high in the morning unless, have you a battery too ?

When DC volts is lower than AC, the inverter has to work much harder to upscale than it would to downscale. So 1kW @ DC 100v = less than 0.5kW @ AC 230v

Also, at 85v, you might well be right on the threshold of the inverter being able to run. Ideally, you want strings with DC volts higher than the AC volts. What model of inverter have you got ? What is it's stated DC Input range ? It could be that it's generating nothing from the 3 panels string because the power is too low.

Have you a DC voltage graph ?