shading

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  1. V

    best way to measure shading on a roof

    hi we cannot get hold of a pv shading tool / pv horizon meter anywhere. How do others measure shading on a roof please?
  2. edexlab

    PV shading

    I haven't posted here for quite a while as I'm no longer working on PV however I'm currently in southern Germany for a couple of weeks and as can be expected nearly every building and the majority of houses even a few small barns and chicken coops here have a system installed...
  3. whinmoor

    Opinions on this Job

    Can anyone spot the schoolboy howler? It looks like the rows are equally spaced. I wonder what impact this would have on performance? I'm not sure I'd be promoting this job on my website. It's especially ironic considering the client - aren't they supposed to be the fount of all wisdom in this...
  4. M

    Advice on which PV Software to get

    Hi Chaps, Im sure this has been asked before but as new software comes out all the time I thought Id see if anyone has tried something new. We primerily install PV on new build housing sites so the installs are usually small and basic. Every now and again we will do a flat roof or something a...
  5. P

    Dreaded shading and micro-inverters

    Hi Guys Just looking at using SolarEdge for the first time in a difficult shading position but note that MCS states a shading analysis has to be done for each panel. Is this right? I was wondering how you guys do this? Do you actually (say) produce 16 shading charts for a 4kW system? Isn't it...
  6. B

    Shading analysis for East facing roof

    I've tried a search, read through the MCS powerpoints, hope I've not missed anything obvious ... How do I fill in the sunpath diagram for an unshaded East facing roof? Thanks.
  7. T

    MCS PV Output Estimation and Shading

    Some of you may remember that both myself and Gavin A wrote Mr Angry letters to Gemserve/MCS on this subject. (http://www.electriciansforums.co.uk/photovoltaic-solar-panels-green-energy-forum/75215-mcs-guide-installation-photovoltaic-systems-shading-3.html) Without boring you with the...
  8. M

    Poole Council PV, interesting shading analysis tool

    An interesting way to waste council tax payers money ....... At least they put it on the South side !
  9. T

    Low output until panels in sun thread on public side - how much more to offer?

    I have pm'd the guy a few times as he is relatively local to me. I now know who the installer is and have had a look at the property on Google Earth. I suspect he has been well and truely shafted. The company involved are spun out of a laminate flooring stack em high sell it cheap chain...
    • The Solar King
    • Thread
    • company offer output panel panels public shading solar thread until
    • Replies: 4
    • Forum: Green Lounge (Access Only)
  10. D

    low output until all panels in sun

    I have an electricity monitor on our 4kw pv system so I can see what the output is and I noticed today that about noon when all but the last 2 panels were in full sun it was outputting 0.3kw. As the sun moved and that last 2 panels came into full sun it went up to full output of over 3kw in...
  11. T

    Solar Edge, Micro Inverters, Leap of Faith?

    We have been looking at a job with considerable shading on what would be the main location of panels. It is a big late Victorian Semi where we can probably get ten panels on one side and a further 6 on the flat roof above. Nearly all the shading comes from a chimney stack located on the outside...
  12. J

    Higher PV DC Output voltage

    Just been advised by a customer he had been told a higher DC output voltage (HJ Solar 250w) was better when shading was an issue. Is this correct ?
  13. S

    DTI Guide Shade Analysis

    So - P63 says - "The sunpath diagram below shall be used to produce a shading analysis for all estimates produced" :frown2: without wishing to spark another debate about the inadequacy of this method is anyone just ignoring it and providing PVsol shading analysis with quotes as usual? I don't...
  14. J

    Solar Edge (or other micro inverter) advantage when shading is minimal?

    Just wondering about your thoughts on whether I lost a job to a technically deficient but more expensive design. Basically a customer has a fairly large tree due west of his roof but has been convinced that the shading is severe so he should go for a more expensive quote using micro...
  15. S

    change/upgrade solar pv system

    I have a solar pv system whixh is 2 years old. My setup is over two roofs east/south due to roof configuration. 3kw with aurora outd 3.6 using the twin mppt inputs. 13 x romag 235w. 9 x east, 4 x south with the 4 south paired up with to on the east to give give enough voltage for the twin...
  16. I

    Shading and Solar Edge

    Hi Guys At a job today and quite a lot of shading with a chimney on the middle of roof and a big tree. I'v created a model on PV Sol and from that calculated the overall shading. Thinking I would use a Solar edge Inverter. The following is a series of images that show the modelling and the...
  17. G

    Using twin tracker with shading

    Hi all, ive got a system to do and its SW facing 8mtrs long so has 2x7 panels on there is a chimney on the left side and will shade about four of the panels, is it best to put a twin tracker Inverter on and put 2 strings of seven or is twin trackers for different pitches and roof...
  18. J

    Inverter Choice: SolarEdge, SMA SB3600TL or SMA SB4000TL?

    Hi All, Apologies for the consumer-oriented questions, but this seems to be one of the best forums on the web for discussing PV. I’m looking at getting a 4Kwp Solar PV system installed (15 x 265W Yingli Panda Panels), but I have a choice of inverters. Our house is south facing, approx 45%...
  19. S

    solar edge and SAP

    How are you guys selling solar edge with regards to the SAP calculations required? (shading etc ) I've got the system designer tool but this isn't going to satisfy the MCS requirement for a SAP calc and also given that they will mainly be used for jobs with shading, it's quite awkward to make...
  20. P

    shading question

    I have 2 roofs, SE and SW, 8 and 6 panels respectively. I also have a SB3600 TL dual inverter. On my roof with the 8 panels my chimney casts a shadow on approx 1/5th of one panel until about 11am (in the winter). They are wired 1x8 and I queried whether it would be better to go 2 x 4 so as to...

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