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    • CommentAuthormarsaday
    • CommentTimeOct 2nd 2019
     
    I am interested in learning more about solar and so i would like to have a chat with a local supplier. I am not thinking of buying anything at the moment, but i would like to get an idea of the costs and what is involved.

    I am asking now because i have finished my extension and mounting solar on it would be a doddle, but i know it won't be as good a place to locate it in terms of energy generated compared to the main roof on the house. It is a 12 v 35 degree pitch and lower down.

    Are there any particular companies i should try get in, or any ones i should avoid, eg, accreditations etc.

    Do you think someone would come out for a decent chat about my setup ? Maybe i need a specific consultant in this area, rather than a direct supplier.
  1.  
    Remind us where you are, and what does '12 v 35 degree pitch' mean?
    • CommentAuthortony
    • CommentTimeOct 2nd 2019
     
    I will whisper
    • CommentAuthormarsaday
    • CommentTimeOct 2nd 2019
     
    In York

    35 degree pitch for the main roof (slate)

    12 degree for the single storey ex (metal).
  2.  
    Summer performance will be enhanced and the performance on the shoulders of the year reduced - probably. What's the orientation?
  3.  
    Try these guys
    http://www.leeds-solar.co.uk/case-studies/example-installations
    I think it's Gavin that used to post on here
    • CommentAuthormarsaday
    • CommentTimeOct 3rd 2019
     
    The back faces bang on East.

    So to the side of the house we have south and this is a very open south, but i suppose the neighbours could possibly extend one day and build out and up if the new regs come into power (no planning needed for a 2 storey extension).

    I just feel the extension roof is the better area to locate any solar panels.

    Ok, i might get less power overall, but will it be that much ?
      IMG_2371.jpg
    •  
      CommentAuthordjh
    • CommentTimeOct 3rd 2019
     
    E-W installations often use some panels facing east and some facing west, otherwise you'll only get power for half the day at best. Your extension roof is presumably shaded by your house in the afternoon? The south wall might be a possibility - you could always move them if the neighbours did ever build an extension that caused problems.

    Microinverters are worth looking at if you have partial shade. They optimise generation from each panel, whereas conventional systems need all the panels to be in sun.

    I'd say it's definitely worth having a word with Gavin or one of his colleagues as James suggests.
  4.  
    +1 with Leeds solar - they did both of my installs (and sorted out my dodgy meter cupboard wiring while they were at it!). Excellent service
    • CommentAuthormarsaday
    • CommentTimeOct 3rd 2019
     
    ok thanks i will give them a call.
    • CommentAuthorjamesingram
    • CommentTimeOct 3rd 2019 edited
     
    your main roof would get more sun for longer over the year.
    lower pitch roofs can get more summer generation.
    for simplicity ( due to roof windows) the lower pitch would be easier.
    A lot depend on your budget and what you want.
    Best solution I'd say is 3kW ( 2x10x300W) East and West facing on a 4kW inverter
    with the export limited to 16A if you dont want to pre-apply to go higher (G98)
    with G99 youll probably be allowed up to 8 kWp without any issues and thenot in you could go another 2kWp on the extension and 4kWp on each side of the main roof
    giving a real generating 'active' house , covering all background use, hot water and day time car charging on good days and perhaps some form of heat storage.
    • CommentAuthorowlman
    • CommentTimeOct 3rd 2019 edited
     
    <blockquote><cite>Posted By: marsaday</cite>The back faces bang on East.
    So to the side of the house we have south and this is a very open south, but i suppose the neighbours could possibly extend one day and build out and up if the new regs come into power (no planning needed for a 2 storey extension).



    If the side of the house with the dormer bungalow is South then the back of your house is West not East, unless your picture ( an old fashioned negative is reversed ). Or is the side of your house North, I assume it's semi detached from the window layout and the hedge. Or have I got it wrong?
    • CommentAuthormarsaday
    • CommentTimeOct 3rd 2019
     
    No South is on the side where my adjoining neighbours are. We are a semi.

    North is where the dorma bungalow is situated.

    Thanks James for the info. I need to read up about everything you have mentioned as everything there goes right over my head.

    Really all this is because i know we will be in this house for at least the next 15 years and in that time i am pretty sure we will be on an electric car my then. So looking into how solar can work with the electric car or van.
    •  
      CommentAuthordjh
    • CommentTimeOct 3rd 2019
     
    I'm very confused about directions now. You said:

    Posted By: marsadayThe back faces bang on East.

    So to the side of the house we have south and this is a very open south, but i suppose the neighbours could possibly extend one day

    but now you say:
    No South is on the side where my adjoining neighbours are. We are a semi.

    North is where the dorma bungalow is situated.

    So which is it? Perhaps you could post a picture in sunlight so we could see?
    • CommentAuthormarsaday
    • CommentTimeOct 3rd 2019
     
    Left of the photo is south, right is north, the back of the house is east and the front is west.
    • CommentAuthorjamesingram
    • CommentTimeOct 4th 2019 edited
     
    I've 5.3kW SE and 1.25kW NE of panels
    This gives me all my background electric usage most the year
    Summer and mid seasons most of our hot water (5 in the house) and on a good sunny day I can charge my electric van at 13amps as well.
    If you load up an inverter as much as possible (to near max volts dc) it gives you more generation on poorer days.
    If you can get up near 3kW of generation 3/4 of the year it starts being quite useful. (on good days)
    Of course electrical items use need to be timed correctly with peak potential generation time of 10 to 3 ish
    With a East / West system you want to load each side to help with early and late generation.
    Midday both will generate and the inverter will just clip off anything above maximum export setting.
    As mentioned you are limited by max Vdc per string though.
    Solaredge kit is well suited to such multi elevation setups
    • CommentAuthormarsaday
    • CommentTimeOct 4th 2019
     
    Thanks James. Good info.

    Any ideas on how much all these panels will cost ?
    • CommentAuthorowlman
    • CommentTimeOct 4th 2019
     
    Would a South facing ground mount array be possible?
  5.  
    for 4kW+ about £1.30 - 1.75 per Watt, supply and fit (some installers might still be after more, and it does depend on inverter and panel brand a bit)
    • CommentAuthormarsaday
    • CommentTimeOct 4th 2019
     
    <blockquote><cite>Posted By: owlman</cite>Would a South facing ground mount array be possible?</blockquote>

    No chance



    <blockquote><cite>Posted By: jamesingram</cite>for 4kW+ about £1.30 - 1.75 per Watt, supply and fit (some installers might still be after more, and it does depend on inverter and panel brand a bit)</blockquote>

    Thanks
  6.  
    Marsaday.
    Little example of output.
    It's currently overcast with 100% cloud cover where I am , still bright and dry.
    Solar irradence is 125 watts per m2 (panel are rated at 1000W/m2 standard test conditions)
    So by the book 12.5% of rated output.
    My 6.55kWp system is generating 750W
    400W is going to back ground kit (xbox!) 300W is being dumped into the immersion (and about 50W exported , immersion dump always make sure a bit is exported to allow for fluxations)
    • CommentAuthorjms452
    • CommentTimeOct 8th 2019
     
    This takes the subjectivity out of what you may generate

    https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html
    • CommentAuthormarsaday
    • CommentTimeSep 1st 2020
     
    http://www.leeds-solar.co.uk/case-studies/example-installations

    I had these guys out early this spring and they said they would get back to me with a quote. Gave me a rough idea on cost and it wasnt to bad. The install is pretty easy and i can provide the scaffolding.

    He was going to get back to me with the figures on how much the install would be and how much would likely be generated.

    Never got back. I am not going to be following them up. Absolutely rubbish
    •  
      CommentAuthordjh
    • CommentTimeSep 1st 2020 edited
     
    Posted By: marsadayhttp://www.leeds-solar.co.uk/case-studies/example-installations

    I had these guys out early this spring and they said they would get back to me with a quote. Gave me a rough idea on cost and it wasnt to bad. The install is pretty easy and i can provide the scaffolding.

    He was going to get back to me with the figures on how much the install would be and how much would likely be generated.

    Never got back. I am not going to be following them up. Absolutely rubbish

    Have you actually contacted them and asked what happened? Losing one quote isn't a good basis for writing off a supplier, IMHO. Gavin has a pretty good reputation and is a member here, so hopefully he might respond somehow.
  7.  
    Posted By: djh
    Posted By: marsadayhttp://www.leeds-solar.co.uk/case-studies/example-installations

    I had these guys out early this spring and they said they would get back to me with a quote. Gave me a rough idea on cost and it wasnt to bad. The install is pretty easy and i can provide the scaffolding.

    He was going to get back to me with the figures on how much the install would be and how much would likely be generated.

    Never got back. I am not going to be following them up. Absolutely rubbish

    Have you actually contacted them and asked what happened? Losing one quote isn't a good basis for writing off a supplier, IMHO. Gavin has a pretty good reputation and is a member here, so hopefully he might respond somehow.


    This is what I was thinking. While it's annoying to have to chase tradesmen when I want their work, I much prefer doing that than having pushy ones ringing me every day.

    I had Leeds solar for both my installs and I rate them highly.
    • CommentAuthormarsaday
    • CommentTimeSep 1st 2020
     
    Yes i would do normally BUT getting them to come and quote took a lot of doing. I contacted them a few times to get someone to come out.

    The guy was good when he came, but it seemed like he was pretty disorganised and i did think i am not going to get this quote. Anyway time has moved on and i have only now looked to update this thread. I am not going to push to get my quote and particulars. It looks like they have plenty on so i will work something else out.
    • CommentAuthorGavin_A
    • CommentTimeSep 1st 2020
     
    Hi Marsaday,

    Sorry if we've not supplied a quote, unfortunately we were already at the point of needing to hire additional admin support at the start of the year, but instead had to unexpectedly furlough our office team in mid March and part of our office team are still furloughed now because it wasn't safe to bring them all back in to the office they were sharing previously.

    In between jobs we've spent the last 4 months building additional office space to allow us to bring our full complement of office staff (and additional staff) back into the office, work that we hope to complete in the next 2 weeks, so we should be back up to full strength in the next 2-3 weeks. (this includes a 2 month delay because of a national shortage of finishing plaster due to the covid-19 shutdown of the factories that make it)

    Unfortunately in the interim while we've been operating understaffed and in a partial building site our capacity to keep on top of all our quote requests as well as all the admin associated with the installations we have been able to carry out still has been significantly diminished, and unfortunately we've missed being able to send some people's quotes out. To be honest, it's mostly been people who've chased us up for the quote that received one, while we've been focussed on ensuring that we don't let down anyone who's actually contracted with us for an installation.

    I hope you'll understand these extenuating circumstances that were a little beyond our control. If you're still interested in a quote please email us this week and I will endeavour to get a quote to you by the end of next week.

    Thanks,

    Gavin, Leeds Solar
  8.  
    Hi Marsaday, Gavin, are you finding it is still economic to install rooftop PV under the present price arrangements?

    If you have a smart meter you can import surplus electricity very cheaply during the night (5-8 pence per kWh) and quite cheaply during the day, except during the evening peak hours. If you are thinking about charging a car, would that work out a cheaper way to obtain electricity to charge it, than fitting your own rooftop PV? You could use the capital in some other way to save energy.

    Interested what others are finding, as I am struggling to get the sums to work in favour of rooftop PV at the moment.
    •  
      CommentAuthorDamonHD
    • CommentTimeSep 2nd 2020
     
    Not everyone will be doing it for the money, though fair enough if you are.

    Rgds

    Damon
  9.  
    Absolutely - my take on this is that I'd rather spend my PV kitty where it will go furthest and have the most environmental benefits, which at the moment seems to me to be by investing in large scale solar farms rather than rooftop PV - the large scale developments seem to install more panels per £ with better orientation. But my motivations are rather off topic, and I'd advise anyone not to take investment advice from a building forum, so my question is more about whether others can make the ends meet for domestic PV at the moment?
   
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