Solar Quote

Thoughts on these items - a smallish roof so can only fit 8 panels max

Thanks

SYSTEM 2 REPORT - 2.28kWp
MODULES: 8 x SunEdison Silvantes R-Series (285Wp)
INVERTERS: 1 x SolarEdge SE-2200
POWER OPTIMISERS: 8 x SolarEdge P300
£4,895 (inc VAT @ 5%)
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Replies

  • tunneltunnel Forumite
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    Ok, i have to ask, why the solaredge? Do you have shading? Any shading? A little bit of shading?

    As for the price....forget it...too expensive

    8 x benQ 285W panels are a little over £1200 RETAIL(sunedison equiv)
    1 x inverter(single string) £500
    1 x scaffold £500
    Racking/cables/switches etc etc £500
    Price £2700 + fitting

    There are also higher rated panels(benQ 330W) to make the most of a small roof

    Again...above prices are retail NOT trade prices of which the installers are privy too
    2 kWp SEbE , 2kWp SSW & 2.5kWp NWbW.....in sunny North Derbyshire
  • bergy2bergy2 Forumite
    387 Posts
    Thanks


    Bit of shading from a chimney - up to 8% affected on their snazzy colour system on panel piccy.


    So factoring in the higher wattage panels and offer of monitoring equipment they have also what sort of cost would you suggest?


    Thanks again.
  • ed110220ed110220 Forumite
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    bergy2 wrote: »
    Thanks


    Bit of shading from a chimney - up to 8% affected on their snazzy colour system on panel piccy.


    So factoring in the higher wattage panels and offer of monitoring equipment they have also what sort of cost would you suggest?


    Thanks again.

    Not sure exactly how costs scale with smaller numbers of panels but I was quoted £5995 for twelve BenQ 330W panels. This was by a seller on EBay who strangely enough had it listed for about £500 more.

    I think the duration of the shading is going to be more important than the amount. Solar modules are very sensitive to shading and unfortunately a small amount on one panel will dramatically cut the output without some mitigation. Even something like a TV antenna can do it. Once one module is slightly shaded it will drag the whole lot down... You might think 8% shading will only cut output by 8% but that is not how it works.

    On the other hand if the shading is only say early or late in the day especially in winter it may not be important as you'll be getting little generation then anyway and even a big percentage of very little isn't much.

    Ed
  • EricMearsEricMears Forumite
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    ed110220 wrote: »
    This was by a seller on EBay who strangely enough had it listed for about £500 more.
    Not 'strange' at all ! If you had bought off his eBay page then paid him using PayPal he'd have lost a lot in the various commissions. Presumably having contacted him via eBay you then had a direct discussion without eBay's 'help'.
    NE Derbyshire.
    4kWp S Facing 17.5deg slope (dormer roof).
    BEV : Nissan Leaf e+
  • tunneltunnel Forumite
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    bergy2 wrote: »
    Thanks


    Bit of shading from a chimney - up to 8% affected on their snazzy colour system on panel piccy.


    So factoring in the higher wattage panels and offer of monitoring equipment they have also what sort of cost would you suggest?


    Thanks again.
    Try to get a price for 8 x benQ 330W panels with enphase micro inverters as they would be the cheaper option to the solaredge system
    8 panels is £2400 retail(roughly)
    Micros £85 each(retail) £680(roughly)
    Fixtures & fittings with scaffold £1000


    In summary, same price you're quoted but a higher kWp system. Just bear in mind these are retail prices and any decent installer will get the kit a lot cheaper so maybe even shave a few quid off that price.


    ps, have a look at wattson solar plus with energive for your monitoring needs, there's plenty of guys on the renewables thread that will happily share a link to their online monitoring for you to feast your eyes on.


    Do you not have any other rooves?
    2 kWp SEbE , 2kWp SSW & 2.5kWp NWbW.....in sunny North Derbyshire
  • bergy2bergy2 Forumite
    387 Posts
    We have a North facing roof - same size and another smaller roof and a flat roof but lower on the North side - will get the 2 local companies to survey and come back here - thanks all :)
  • bergy2bergy2 Forumite
    387 Posts
    Hi


    Got 3 companies visiting -now know the roof is SE, other NW


    Shading is basically a chimney and rising edges - that's it so wonder if the optimisers are worth it at all?


    Had a quote with 8 LG panels 300W £4750, Samil Inverter


    Andy
  • tunneltunnel Forumite
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    Hi Andy,
    DO NOT underestimate the effects of shading....ever, it takes only one panel to have around 10-15% shade to bring the rest of the panels down with it.


    Now, where exactly is the chimney? Is it to the west side of your roof, bottom (near gutters) or to the east. It is important so we can understand just how much of a difference it will make now you have the right direction of the roof.


    Ps, LG quote, still to much.


    Maybe post your rough location(nearest town will do), hopefully get a couple of recommendations for installers the guys and gals on here have used and who'll quote sensibly.
    2 kWp SEbE , 2kWp SSW & 2.5kWp NWbW.....in sunny North Derbyshire
  • bergy2bergy2 Forumite
    387 Posts
    OK Central Bristol
    Got three local companies visiting
    Our chimney is the culprit - though as you face the SE roof it is on the left side so whole roof is basking in sunshine currently - so any shading would be later in the day
  • bergy2bergy2 Forumite
    387 Posts
    Oh and do Solar Edge Power Optimisers have to be used with a solar edge inverter? Or can they be used with say a Sunny Boy?
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