38.8kWh yesterday and 46 on the button today.
Apart from the past two days May has been poor ..it really needs to get it's arse into gear.
Best day of the year so far. 72.6kWh generated and 81.8kWh exported😀
Very poor until the last couple of days in Cork too.
55.1kwh yesterday and 68.1 today.🤙
44.82 today, a new record high for my system.. long may it continue
Holy *@!?# 🤣🤣🤣
Well you can expect another 42kWh tomorrow with your array (roughly) if the forecasts are right.
Me? I got a solid 32.6kWh on the main roof and another 13.8kWh off the shed, bringing me to ~46kWh in total. Solid figures. But still I've a fair bit to go for all time high for me, which is mid-50's (east/west split still getting better for another few weeks)
Sunday looks solid enough too, but monday is a return to …. meh
That's just savage that is. <Jealous>
Over 40kw in Cork today off 3.9kw south and 2.6kw east. Best so far
Today was a new ATH for me since my install at the end of June last year, got 47.68 :)
7.74kW (18x 430w panels) 9 panels South / 9 panels West in North Waterford
Amazing generation figures 'S'.
What prompted you to go from your initial 7.2 array to 11.2? FIT?
It was mainly down to cost to add the additional panels/ inverter and not using any day units in winter. I’m on the Pinergy 5c/kW 2am-5am tariff.
9 x 450w panels cost €1200 and €500 for local fitter to fit panels on roof. I sold my 6kW Solis inverter and 20x 200ah calb (12kwh capacity) cells with a deye and 20x 280ah Eve cells (28kwh capacity). Wired up the panels, inverter & DIY battery myself to keep costs down.
39.8 yesterday, a few high clouds for an hour in afternoon kept us from the elusive 40's 😉🌞
I never see anyone monitoring the solar radiation which met eireann publish daily to give a good feel of the effect of cloudy/sunny days on panel efficiencies. I have a modest self installed solar (3.84M2) thermal which, based on the roches point solar radiation of 2761J/m2 gave a efficiency of 30.2%. solar radiation, 2761*0.0027777*3.84, 29.45Kwh, flat plate output, 8.9Kwh, efficiency, 8.9/29.45, 30.2%, on cloudy days, this can fall to 8% or less but both the yearly solar radiation and the panel output have remained remarkably consistent over the past 13 years at ~ 1000kwh/m2 (radiation) and panel(s) output of 260kwh/m2, to give a consistent overall efficiency of 26%.
Applying the above to your solar PV and assuming 6m2/KWp?, suggests you have 64.5m2 installed so solar radiation was 64.5*2761*0.0027777, 494.54KWh, output, 68.1KWh, efficiency, 68.1/494.54, 13.77%. The 72.6KWh "Mayo Man" above using 2651J/m2 (average of Belmullet&Claremorris) gives a efficiency of 14.67%.
It would be very interesting (to me anyhow) to monitor both the solar radiation and PV output over a few weeks to see how the fall off in output compares with the solar thermal on cloudy days, I suspect not as much.
My second full day with new system and I generated 28kwh yesterday similar to day before. The weather started off good but a lot of cloud in the afternoon. South county Dublin.
I monitor it and occasionally publish some analysis on the daily yields. Eg.
The problem with what your suggesting is that it's not as trivial as it would seem on the surface. Yes, Met Eireann publish solar forecasts, and I take those numbers and apply a weighted algorithm to it based on historic yields to give estimates as to what I'll generate in the future. I don't "need" the estimates, but it's a fun project.
What's important to realize though is that the Met Eireann solar radiation forecasts are in fact forecasts. They are generally ok, but there are days where whatever reason, they are well off. Comparing one days numbers with another is tricky and prone to pitfalls. They say your due to get 6,000 "rads" (lets call them :-) , but did you actually get 6,000 rads? Who knows? I know the page you linked is "actuals" , but even with them…there are problems.
Some examples -
So comparing as your suggesting is ….. complicated. You can do it, but you need temperature coefficients, map the yield to the hour and that back to the installation profile (E/W, South, etc) and size of arrays.
A year or two back we had a good thread on this in the forums - but I can't find it.
Yeah I use it, my way isn't as fancy as @bullit_dodger but works well enough for what I want it to.
I think I'm doing something similar to you
The solar radiation at Roches Point, Cork for 2020,2021,2022&2023 was respectively, 1053,1093,1054&1062 Kwh/m2. If one assumes this reasonably reflects the radiation country wide then you will probably find that the solar output varies very little from year to year for any given installation, one, in Cork, (modest system) post #3, below, generated 2128KWh in 2020 from a S 2.08KWp array, assuming 6m2/KWp, then the input was 2.08*6*1053, 13141Kwh, efficiency, 2128/13141, 16.19%, quite good? possibly due to South facing orientation?
Go to page1 of the link, below.
47.3kWh today, an all time high.
A cracking 3 days with circa 131kWh generated which is nearly 50% of the total for the month of May so far.
35kw yesterday, 30kwh today.
Yeah, yesterday and today has surpassed the entire month of December. great to see those €€€ rocking in.
managed 40 kWh ,yesterday Friday 10th,
got 32.7kWh today
7.4kw Split east west , Mayo
82kWh exported today, new record. So the balance of the last 4 days:
Imported 180kWh (€9), standing charge (€4), exported 284kWh (€71), net profit €58
Respect.
52kwh yesterday and 52.6kwh today, fantastic to see all the high numbers here again.
8.3kw array south facing
Fri 48.4 kWh, Sat 44.5 kWh, Sun 37.1 kWh
Friday has been the best day since install in March.
20.7kWh
Overcast for much of the day.
19.6kwh for the day, the morning was excellent, the afternoon not so much.
96.4kwh for the last for days, which beats my December total.
Going to be another 60+kWh export today, unexpected. So my exports have been over 40,60,60,80,80,60 in the last 6 days, generating about €100 in FIT, nice
Cool. What size is your system?
27kwh yesterday.
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