43.9kW yesterday, another record. Between the earlier start by the panels and the battery, I'm nearly at 100% self sufficency, only need to buy a bit off the grid in the early mornings, just 0.6kw bought today. Or should I say 'borrowed' from the grid, over 15kw exported yesterday.
4.8kw sent to heating hot water yesterday, over 20 since Monday, keeping oil usage at a minimum 😁
Your slope is actually off optimum for this time of the year. My panels are flat and really coming into their own, but you have much much better winter production.
100% due south and the roof is about 43degs elevation. Very lucky with my position and site, no shadows at any time of the day and it exposed so open sky all around.
40kWh on the nose today, exported 5.4 as I'm not at home.
Beautiful curve! above 1kW from 8am to 7pm..brilliant Whats your roof aspect?
As close to a perfect curve as you can get for me in Cork as well (first one since the end of March) finished off at 44.5 kWh biggest day yet for me of the year so far.
like you @Chris_5339762 my max peak out put is 6.1kW but only maxed out to day around 5.6-5.7kW. I have seen my system hit 6.1 from around 10:30 in the morning some days. I am now thinking is it to do with the temp on the panels as you loose some efficiency with the higher temps. I was down around 7-10% off my max output today.
The more experienced people on here might shed some light on it. I was under the impression is was high level cloud or hazy days but not too sure now
24kWh in Cork and as close to a cloudless day as you can get. Ruined by our ongoing over-voltage and inverter cutoff issue at about 330pm! Only a max of 2.9kW, we have gotten 3.3kW before but a bit of haze pulled that down a little.
Battery on the cards once the voltage problem is resolved. Did what we could with hot water and a storage heater for the cold bathroom, as well as charging every power bank in the house.
Not our best day, those broken clouds are holding us back a bit as we would expect to be breaking the 50kWh barrier at this stage, today looking promising so we shall see.
On the plus side we have just done the meter reading for the last two months and are down to 10 day units and 71 night units so bill will mostly be standing charges at this rate.
Car is charged so a lot will be going back to the grid today.
It is! I had a feeling it was coming, max was 92kWh last year before I fixed my export voltage issues. Actually had to do some tricks to achieve it, namely drip feed the car over a few hours at only 3kW and export at 6kW to keep the total load around 10kW for as long as possible. Same forecast today but no EV battery to soak it up so expecting a lot less.
Is that your first century😎
@brianbruff what is your system size and details they are good numbers.
You might consider entering you system data into this website one of the users created, it has most peoples system sizes and we enter our monthly data as well to we can contrast and compare
https://www.pvstats.eu/home.pl
Even though I put in a 42.9 kWh day yesterday once again there were clouds that were holding me back, also it looks like there was some high level clouds (or just hazy) that stopped me reaching my peak of 6.1 kW all day and I left a good few kWh on the pitch. If you look at the 23rd the month on a perfect day I should be pounding out 6.1 kW from 10:30 all the way to 5pm.
Today will be good as well so we will see. On a positive note the next few days are look good so should top off the month nicely.
(6.1 kWp system South of Cork City)
Broke 60 mark today with tomorrow promised even better
And we had cloud and rain showers up north all day.. and we are trying to get grass cut! Rain next week too!
And there it is
new record for me 50kwh in Limerick today
Finally broke the 40kW barrier today, a new record. Though I'm putting it down to getting changed from a 5kw to a 6kw inverter yesterday (incorrect size fitted originally) than stunning weather.
Also got a myenergi hub so I can more easily dump more excess into the hot water.
Ha! 😀
Yea, tomorrow looking like a record breaker
Second failed estimate in a row
And still going strong.
Tomorrow should overtake April's gen too
Time to empty those batteries and put that stinky shirt you've been wearing since last week in the wash. Tomorrow looks like blue skies and a record setter (at least for Dublin anyway)
I think when you are moving into 3/4 string scenarios it needs to cover all aspects, no use 4 strings all S facing unless huge battery bank, better off to be generating and consuming, much more efficient
I'd need another inverter to use the N side of the existing setup.
Have another S facing lean-to shed, I could probably squeeze 18-20 panels on if needed, though the slope is fairly flat and is approx 20/25M to connect to the mains which introduces another ball ache.
Hope to build a small extension to the main house in a couple of years so plan A is to add another inverter and 4-6kWh of panels on an E/W split which would compliment the existing setup nicely.
Plan B is the other shed, the rafters in it need to be replaced at some stage so could increase the pitch a little then. Down the line when we have 2 EVs in the house, it may come into the equation.
Plan C would be the N side of the current S facing array on another outbuilding. Unlikely to ever do that though.
N is a deffo DIY route after main panelling done, just futureproof existing cabling etc to allow for minimal additional effort/costs
If your slope is ok, ideally 20 deg or less, north is pretty good for 6-7 months of the year, but yeah....outside of that, not great. But even with north I did the math and it's feasible for a decent ('ish) return on investment if you were just paying for panels and not having to fork out for a 2nd inverter etc.
Thanks everyone. Much the same so, I hit 3.7kWh production around 09:00 as the sun came around, the graph shot up in aporox 5 mins.
I had wondered the last few weeks was this normal, doesn't make N facing panels very appealing for the majority of the year.
For comparison, I've an east/west split. It's exactly east/west at 90/270. The split is 1.3Kwp/3.8Kwp and here are the two strings isolated out.
Get pretty good production from 7am onwards. From that time it's 50% of max which is at 11:20am. You can see easily where the sun crests the apex of the roof at 9:20am and starts to hit the west facing array (ppv1).
Facing similar to you at 200° on a 35° pitch, 8.16kW array.
Sunrise at 05:20.
Start producing at 05:00 70w
05:30 232w
06:00 520w
06:20 (1hr after sunrise) 735w
Hits the 1kW at about 7:30.
Haven't had a clear cloudless sky in the midlands in weeks so not seeing the full potential and sitting at 660kWh for the month so far, March really was a great month looking back so hopefully will top it by the end of this one.
Here is from 10 days ago I have not had a cloudless day in weeks but it looks like a clear enough morning and there is a steady curve to show potential. Doesn't really get going until after 7am. I am on a south facing slope which means at this time of the year the sun is coming up behind me. I can see houses across the valley (north side of the valley) in the distance getting full sun earlier than me.
at 07:15 644 Watts
08:05 1500 Watts
08:30 2000 Watts
@ 10:45am I maxed out at 6100 Watts
Edit 6.1 kWp system south of Cork city
For those with a south facing array, where the rising sun is behind it from early morning, what production are you getting after, say 1hr after sunrise?
Getting 200w (from a 6.86kw array @ S+20°) at 06:30 with sun at E-20°. Sunrise at 5:18 today and clear skies, but we live in a valley so the sun takes another half hour to appear for us. Panels started up about 5:45.
Edit: 1hr later at 6:45, it's up to 350w
25.5kWh today. Not bad considering the south array was down until about 1pm being upgraded. Peaks up to almost 7kW afterwards though.
Mad day for weather too. Sunshine to torrential rain within a few minutes.
