19.7kWh in Donegal.
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.
That evening wasn't too bad, but the power was fairly low. One of the strangest looking graphs I've seen in a while.
18.5 kWh from 3.1 kWp. Nearly as high as last Thursday.
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
Looks like a big weather front rolling in from the south!
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
How accurate is the JRC PVGIS website in terms of predicted output and output from actual systems deployed? does it match expected system outputs?
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.
I recently (last month) upgraded my array by adding 3x panels, but here's the PVGiS verses actual for the last 15-18 months. All of 2022 was at the 5.3Kwp forecast level. As you can see, the blue solid line nearly always beat the orange dotted one, so I'd agree with Graeme it tends to be pessimistic - which is good. Gives people a realistic appreciation of solar - and then when they have the system installed it'll pleasantly beat it. :-)
And that's with the last two months being " not great" vs last year
Posting here for the first time have a
4.8 KW system
Direction South Location Meath
Generated 21.6Kw yesterday I am very happy with that considering day only had Sunny Spells.
Now these are some stats I can get behind, the battery is making a huge difference
The majority of the 800Wh imported was during the 3 hour window during the night for charging the EVs (they didn't charge last night)
Got 2 runs each of the dishwasher, laundry and dryer done, cooked dinner and lunch, made a tikka in the slow cooker and topped up both EVs, all from sunlight 😁
Bit ridiculous when you spent more on standing charges than electricity in one day
Today:
April:
Very good, very nice!!!
What apps do people use to track
Home assistant mainly. Also the stock app from Huawei.
10 months live and still sooooo excited about it. Car is charging in the driveway from the sun. And it’s a day you can’t even tell where the sun it. Clouds covering the whole sky but it’s still bright. Ok, it’s only getting the 1.4kW it needs to charge, but ‘low and slow’ works 😊
1.4kw/hr = 7Km in driving range an hour. What's not to like :-)
Wow - was only supposed to be an "above average" day, but it's turned out to be best of the year so far for me. Matched Apr 20th's - 30.6KWh
12.2 from 3.1 kWp
Afternoon was scorchio, hit a short term peak but not near a record.
That's at 3pm
My first full day online - looks like I got lucky with the weather.
EW 6.72 (E 4.2 | W 2.52) Solis 5G/PureDrive II 5KW
SolarEdge dashboard is nice. Congratulations!
My 2nd day. 7.1 kwp E/W - 41.07kwh production.
Thanks to bullit_dodger and micks_address for their help over the last few weeks.
Your welcome - great to see another household running on sunshine :-)
Hi Folks
Does anyone have data over the winter of Solar PV with a Heat Pump - generation, consumption and feedback to the grid?
I am keen on solar PV but concerned about the major draw for electricity being at night with the HP but generation being during daylight hours....
For Reference - 10kW Heat Pump, approx 8000 kWh consumption annually
we can tell you all about the PV side of things here if you tell us your roof orientation and how many panels you think you can fit; the unknown is really the heat pump.
On my friends heat pump you can go into the settings and export the data. Maybe you can even pull up some kind of graph on this so we can start to get an idea. Even if it’s broken down by month; we could start to get an idea of average consumption.
a lot of it also comes down to how you run the system; do you have it configured to use weather compensation and just leave it running 24/7/365; also how much hot water you use comes into play.
what’s the make / model of the heat pump?
Enter the details of a system you can fit in here https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html if using more than one string orientation enter each ones details separately to see possible generation per annum. Also look at this app for sun position during the year https://play.google.com/store/apps/details?id=jp.gr.java_conf.siranet.sunshine&hl=en_IE&gl=US
Are you sure the 8000kWh is power in and not the heating units out?
I would use less than a third of that in a year for heating, cooling and DHW. But obviously depends on house size etc.
Solar won't cover much if any of your HP heating needs in the worst months.
Thanks for the replies.
House 2750 qsft, back roof south facing in Galway
Heat Pump https://www.joule.ie/products/12kw-r32-air-source-heat-pump/ which is run on-demand, once the tank temperature drops
8000 units of electricity is for 12 months domestic use including Heat Pump which supplies heat and water
I do not have a breakdown of Domestic use versus Heat Pump use - I have a look to see if I can extract usage...
I misread your original post, I thought you meant 8000kWh annually for the heat pump.
If you can get a better breakdown of what the house is using daily and can split this from the HP it would be a good start.
I have a HP and solar. But it is an East/West split so in winter it wouldn't cover the base load of the house on it's own, and that's not accounting for the HP usage.
