j2d
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« on: October 04, 2011, 11:49:17 AM » |
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Still new to the world of solar so go easy
On a 4Kw system with a day like today (totally overcast with white clouds)
How much is my system likely to be running at? Or would it not even switch on?
John
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3.92kW system on my WEST facing roof in sunny Essex
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volzhskyboy
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« Reply #1 on: October 04, 2011, 11:59:36 AM » |
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As a generalism, 2kWh would be a bad day!
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16 x Sanyo HITH250E01. SMA Sunnyboy 4000TL & Sunnybeam. 40 Deg incl, South facing. Lat 54° 36'
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j2d
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« Reply #2 on: October 04, 2011, 12:05:04 PM » |
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What rough amount of watts will it be producing when i check the monitior?
John
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3.92kW system on my WEST facing roof in sunny Essex
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volzhskyboy
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« Reply #3 on: October 04, 2011, 12:22:45 PM » |
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There are lot's of variables, inclination, panel make, actual weather condition etc, the lowest I can see recorded in the last few weeks around mid-day was 36W on the 16th due to heavy rain and overcast.
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16 x Sanyo HITH250E01. SMA Sunnyboy 4000TL & Sunnybeam. 40 Deg incl, South facing. Lat 54° 36'
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j2d
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« Reply #4 on: October 04, 2011, 01:03:07 PM » |
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Ok, cheers
What's the highest u've seen on an completely overcast day?
John
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3.92kW system on my WEST facing roof in sunny Essex
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shambolic
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« Reply #5 on: October 04, 2011, 01:09:14 PM » |
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I'm 4.5KWh so far today and I have some shading issues with a silver birch during these winter months. Lowest I had so far was 2.8KWh
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AlanIOW
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« Reply #6 on: October 04, 2011, 01:12:07 PM » |
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Hi Take a look here; http://pvoutput.org/list.jsp?id=2476&sid=1872This shows the output from my system on the Isle of Wight for the last 31 days, if you click on the green dot above any date it will show the output every 5 mins on that day. You will see the 6th Sept was the worst day I have had in over a year, it was heavy rain/mist all day and the max was about 238w. Hope this helps Alan |
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skyewright
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« Reply #7 on: October 04, 2011, 02:12:13 PM » |
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As a generalism, 2kWh would be a bad day!
Location, orientation and slope all make a difference. I had a 0.4kWh day last week (not everywhere in the UK shared in last week's sunshine). |
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Regards
David
3.91kWp PV (17 x Moser Baer 230 and Aurora PVI-3.6-OUTD-S-UK), slope 40°, WSW, Lat 57° 9' (Isle of Skye)
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mysterons
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« Reply #8 on: October 04, 2011, 03:34:13 PM » |
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I've a similar sized system to the O/P and as of now (3.30pm) there's 500wh being produced and a total of 8.82kwh for the day so far.
As pointed out it really depends on local conditions/orientation and degree of slope on the panels. Oh and shading of course
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3.96kWp Solar PV - 18 Sharp 220w and SMA3300 fired up at 4.30pm 12th Oct 2010
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Justme
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« Reply #9 on: October 04, 2011, 04:50:24 PM » |
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I've a similar sized system to the O/P and as of now (3.30pm) there's 500w being produced and a total of 8.82kwh for the day so far.
As pointed out it really depends on local conditions/orientation and degree of slope on the panels. Oh and shading of course
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Navitron solar thermal system
30 x 58mm panel 259L TS
1200watts solar 120vdc
FX80 Solar controller
Victron 12v 3000w 120a
200w (250w peak) 12v turbine as a tester
6kva genny
6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C
Total bank 4350 amp/h @12v
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j2d
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« Reply #10 on: October 04, 2011, 06:18:16 PM » |
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I've a similar sized system to the O/P and as of now (3.30pm) there's 500wh being produced and a total of 8.82kwh for the day so far.
As pointed out it really depends on local conditions/orientation and degree of slope on the panels. Oh and shading of course
Is that when it is overcast? |
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3.92kW system on my WEST facing roof in sunny Essex
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j2d
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« Reply #11 on: October 04, 2011, 06:21:52 PM » |
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I'm in Essex, 40 degree roof slightly south of west, soon to be a 3.92Kw system.
If I get 500W at any 1 time on an overcast day that's more than I thought I'd get.
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3.92kW system on my WEST facing roof in sunny Essex
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Rich
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« Reply #12 on: October 04, 2011, 07:40:07 PM » |
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3.96kW system, south facing at 40 degrees with no shading and I generated only 3kWh today, 4kWh yesterday and about .5kWh on Sunday which was the lowest to date. It is very cloudy here at the moment.
In contrast, one day last week when it was very sunny we did 21kWh!
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3.96 kWp ground mounted system, south facing, 40 degree inclination.
Sunny Cumbria!
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langstroth3
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« Reply #13 on: October 04, 2011, 08:01:20 PM » |
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4kw array. Fairly overcast (North Hampshire) 3.159KwH today. Peak was 1.4kw at 13.40 according to the Inverter.
Started output at 8.05am, ended at 6.10pm.
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Solar Thermal = Navitron 40 (20 x 47mm) Evacuated Tubes.
Solar PV = 4kWp, 16 x 250w znshine; sb4000tl inverter
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