Hi, missed your reply before - very interesting, and thanks for taking the time to do the calculations! As a fyi, the clipping stops at ~13.30, so 4 hrs a day...or 16 years payback :)
Another new record today:
65.5kWh from a 10.4kWp system with a Solis 6kW inverter pointed south in south Dublin.
No easy way to figure this out. Trial and error.
Plug out string 2 now and connect string 1 to the string 2 input. Leave the second string disconnected ideally and see what happens.
you could also just swap the strings to see if the behaviour swaps.
if you do this it will rule out issues with the inverter.
your installer is going to have to get out a multimeter and start testing all the panels individually on string 1 otherwise. This little bit of homework will help them.
Hi all,
Great to see that everyone is having a record breaking week. Long may it continue.
I have solar installed just shy of 10 months now and today after a number of close calls I finally broke my old record which was set the day after install. It not only broke it but was almost 8% higher (59.1kWh vs. 54.8kWh) coming in just below the 60kWh mark. So I had a look at the data to see if it was possible for it to cross the 60kWh mark. I was hoping that someone on here with more knowledge of solar might be able to explain what is happening here.
The installer will be out in the next day or two to look into an issue I have with the battery not starting since Saturday night. They are hoping a firmware install will resolve the issue. While they are out they are going to give the system a "medical" for want of a better word. Looking at the data I'm seeing some strange things that I can't make sense of so was hoping someone here may have more input before the installer is out.
I have two strings (4.56Kwp SSE and 3.8Kwp WSW) feeding into a 6Kw Sofar HYD6000-EP inverter. The graph below shows the two strings and how they behaved today on what was almost a perfect day for power, current and voltage. While the PV ouput from string 2 is almost a perfect curve String 1 has a totally different curve. There is some shading on string 1 later in the day as the sun moves behind the house but it is the earlier part of the day that interests me. Anyone any ideas of why this may be happening or is there something I should get the installer to look at while they are here? Or are the panels working as expected?
Thanks for any advice
44.2 generated today... I wonder can I do 45..
At first glance I thought the CT clamp on your grid was the wrong way around :) but then I realise you prob have a car charging overnight right?
What a beautiful day. Not a cloud all day long. Didn't beat Sundays figures but wow great kw to put into the ev.
Squeezed 2% more output today than yesterday. So another PV today. Every little helps :)
Had the best curve I've seen in 10 months I'm live.
First day over 50. First time past 1000 in a month. Very nice!!!
Ever so slightly better than yesterday - which was previously my all time high.
Was keeping an eye on it during the day. Line in Red was today, blue = yesterday. It was out-producing yesterday until 15:00 or so and then it flipped. T'was close all the same.
38.9KWh yesterday and 39.62KWh today.....and for those of you in Dublin area.....
Todays solar radiation was 8230 tomorrows is forecasted to be 8232. So more of the same. Bring it!
New record 55.2 and finally a cloud less day, I think this is the max I can push.
Shame about all that export but 140kwh of full batteries is easy with 150kwh+ in 3 days.
A perfect wonky curve (due to chimney)
Fifth day after new install and 30.9kWh again today, exact same as yesterday. 4.1 kwp roof mounted, south facing in Donegal. Clear skies all day so this might as good as it gets !
45.4 for me today
New record of 34.4kWh today from 4.8kWp system in Fingal. Edged my previous record by 0.1kWh (almost a year ago to the day; 1st June 2022). On course for highest ever monthly generation too.
Definitely going to get a mega month. Wouldn’t have thought it possible when we installed the system.
53.5 kwh a new record. 32kwh sent to the grid even with a roasting tank and everything that could be washed washed.
46.8 today and reckon the layer of dust on the panels (the wha?!) is reducing output by ~1kwp... just might take out the hose!
Mine is split 1.7 south, 1.4 west. Only problem is west panels getting shaded by neighbours chimney in the evening :(
Not sure how much production is being lost but I doubt four optimisers would ever pay for themselves.
Sorry missed this earlier. My daily commute is 120km round trip that’s if I don’t stop in town in the way back etc. for me I’d like to have 3 days in the car incase **** happens hence the 400km plus range.
also I’d love to have a battery that when connected could power the house also.
I arrive home most days about three so winter charging isn’t a runner but May to October I reckon most of the distance can be completed with solar and the rest night rate in the darker months. I’d be happy to leave the car sit charging Saturday Sunday also.
Both similar systems to me. Yeah ended up 24.2 . 3kwp sw and 1kw ne. 3rd day in a row over 20
21.5 kWh today. Third day in a row over 20 kWh.
3.1 kWp Dublin.
24.6 so far today. Might squeeze another 0.1kw out.
But it's better than yesterday by 0.7.
Like you should reach 500kwh tomorrow if I get 22kwh more.
I think today looks to be tiny bit short of yesterday, probably slightly warmer temperature? still a fantastic day. if tomorrow is decent could reach 500kwh for May.
The different with an unshaded South like yours in unreal. My system is 80% the size of yours, but this month will only get 60% of the output. I’ve 4.9kWp - mainly E and rest W. Small bit of shading early and late.
Not that I mind, tbh. I’m still delighted to be getting free juice from the sun and into the EV. You work on the roof available.
@ELM327 Jeeze you just missed out installing last September..... August '22 was a record month for me and for every one here I imagine, 7 days of 40+ kWh days for me which is 95%+ of my peak and then the last week of August was well into 30s kWh. Looking back at the numbers we only had one poor enough day and that was 15 kWh as it was..
Anyway this May is turning out to be pretty darn good, I reckon I'll be at 914 kWh by the end of tomorrow last August I got 924 kWh so 10kWh of my best every month I reckon this month will be
Graph here is August '22, 6.1 kWp system south of Cork city
Appreciate the reply, interesting to know. It's 9 x375w panels = 3.375kWp.
Here's a graph from the 26th
Yeah. This would usually be the case. But as I mentioned you inverter has 2 inputs but only one MPPT; so splitting the panels like this in this case achieves nothing.
most inverters with 2 PV string inputs have two MPPT’s for this reason. So it also sounds like they have installed an inverter that is not fit for purpose. I’d push for an inverter with 2 x MPPT’s as your mentioning the shading.
sounds like whoever did the install didn’t understand the technical specs of the equipment they were using.
yeah; don’t let them fob you off on that projoy; both strings need to be routed via it (or an upgraded unit for capacity for 2 x strings of yours only accommodates one string).
Europe Visible - Met Éireann - The Irish Meteorological Service
Finally, FINALLY we have a day where we got over 30kWh. For weeks its been 29.something, but we finally hit the 30.
3kW inverter which works at 3.3kW, 12 panels (roughly 4.8 or even 5kWhp). I know we're limited by the inverter now but selling/scrapping the 3kW one and putting in a 5.99999999kW one just isn't worth it sadly. Wouldn't use the extra power anyways.
your figures are about right.. and yup its an incentive to load shift. I don't see it as a bad thing. Cars are more likely to be home at night to be charged anyway. So that's all lining up..
The bit that doesnt is tax on FIT, as you point out.
