It's as close as your gonna get. Usually it's a bit on the pessimistic side.
Some months it's behind, some it's ahead.
How accurate is the JRC PVGIS website in terms of predicted output and output from actual systems deployed? does it match expected system outputs?
First day after the battery got installed
My head is gone crazy, I don't have to endlessly watch the PV output to ensure I'm not exporting or importing too much 😂
Generated 17.42kWh today, used 6.66kWh and 10.43kWh went into the battery and 0.32kWh went to the grid
Imported only 2.9kWh from the grid, the vast majority at night rate
Battery is sitting at 87% and I'm still getting power out of my panels, I'm very happy overall
Looks like a big weather front rolling in from the south!
Yeah, cracking day here in Dublin. Forecast was for 20Kwh, rocked in with 29Kwh off 6.5Kwp (E/W split). here's hoping that tomorrows forecast is as "wrong". :-) as only 7Kwh forecasted for tomorrow
18.5 kWh from 3.1 kWp. Nearly as high as last Thursday.
That evening wasn't too bad, but the power was fairly low. One of the strangest looking graphs I've seen in a while.
Wet all day with a spell of evening sunshine, 3.1kWp. Got all washing and cooking done Thursday/Friday when the sun was out, Saturday production below.
19.7kWh in Donegal.
Yeah, pretty muck in Dublin. Here's today's (Saturday) compared to the glorious Thursday.
Like you it pretty much stopped generating there this morning at one stage.
4.5kWh here. I suspect your SW aspect caught most of the sun that appeared here around 17:45.
It was so dull here that my system stopped generating entirely between 13:05 and 13:09.
24.8kWh today for me. I wasn't close to home so it was surprising as the weather was crap everywhere else I went.
8kW split E/W.
Same here, estimate 17kWh and finished up with 6kWh. Peak was 1.2kW. :(
Thanks, for this - my panels are 6 months installed, I have learned a lot from these threads!
Yeah it's a good indication of steady power in full sun,
Moving from cloud to sun can give a brief burst of high power when the panels are cold but the sun's out, they warm up quickly though
6.1 today, 16.8 yesterday and 38.5 on 20th from 4.8 kW SW and 2 kW NE in South Dublin.
On 20th, the peak power was approx 4.9 kW whereas it reached 6.2 kW on 18th. Inverter is 6 kW.
Given it was cloudless sky on 20th, presume lower peak was combination of inverter temp and panel temp?
Is that an indicator of warm summer day peaks?
Glorious day up here!
We're using some scripts to calculate it from their API. See the automation thread, it's there somewhere.
Where on the met eireann website can you see a prediction for solar?
Yeah for sure, where the f* did met.ie think I would get enough irradiation for 20kwh today, I'll never know. If I lived about the clouds maybe.
Tomorrow showing the same and yet rain all day, battery getting charged so.
Don't think anyone will be posting up perfect curves today, I'll barely make 5kW
At least the panels will get a wash
No idea but there is quite a lot and their big😂 we got quite a few seagulls about dive bombing.
May is bird poop central here.. car is usually destroyed.. i give up trying to wash it for the month.. re the panels is the general consensus is that it will just bio degrade and wash away with rain?
2nd highest daily total yesterday, came in at 18.6kwh from a south facing 2.5kwp system in Galway.
Best was 18.9 kwh from May 21.
Funny old day, never went above 2.4kwh production at peak as the easterly wind never hit panels to cool them, also noticed a lot of bird shyte on panels.😀
Hope you can make that out. They use practically the same colours for both strings - I'm curious to see what my max generation will be. I suspect maybe 50/55kw is possible in June.
Yeah , I was just really demonstrating the overall trend that it doesnt get over 80% at all on either array. Shortening the timespan just makes the same point over a few days.
on the 14th, that was my record day for peak since installation which indeed hit 90% in both arrays at various points.
Yesterday in contrast, never exceeded 80%.
So both a similar story to yourself.
But got the answer I needed I think, it is normal, and nothing to be concerned about. And yes my array is oversized! ;-)
I got caught with 3 panels on it's own string and the startup voltage (VOC) is too low. So the string wakes up later and goes to sleep earlier than it should. If I could fit a 4th panel (which I can’t), I’d be fine.
yep, just concerned about a 70kmh+ wind gust edge effect up there but nothing that can't be sorted properly I suppose. it was getting a nice amount of late sun yesterday..
Hit the 30 KWh mark yesterday. And because the EV was away, most of that was exported.
Do you mean mount 3 panels vertically on it? If you are going to DIY this at a reasonable cost I would definitely go for it.
