Project Solar Quote Advice

Hey Guys

I was scrolling through facebook when I came across an ad from Project Solar. I just had a rep come around this evening and gave me a quote for £12.9k. Weve got a detached house and the rep said we could get the maximum number of panels allowed on there (generating 5.6kwp?). She estimated we would generate £65 worth of leccy a month and with out current bill for £45 we would be saving £20. I have attached a few screenshots that was emailed to me detailing the quote in more detail. This is the first quote I have had in 15 years. Its only by chance. It seemed attractive to me at first but after reading MSE, it seems like I can do much better! I have read through the PV faqs as well.





Any advice appreciated, thanks in advance!

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Comments

  • ASavvyBuyer
    ASavvyBuyer Posts: 1,737 Forumite
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    That price looks to be about double what it should be for that size of system.
  • Looks like they've also assumed an annual inflation rate of around 4.5% which rather gilds the lilly somewhat. Suggest you work out yourself the current annual saving based on a saving of 50% of existing consumption then divide into the capital investment without assuming any annual inflation to give a more realistic return on investment.
    There appears little detail with the quotation, ie number, output and cost of each panel. Type of Inverter, lengths of guarantees etc, is shading an issue? 
    Agree with ASB above, its at least double recently agreed figures elsewhere.
    East coast, lat 51.97. 8.26kw SSE, 23° pitch + 0.59kw WSW vertical. Nissan Leaf plus Zappi charger and 2 x ASHP's. Givenergy 8.2 & 9.5 kWh batts, 2 x 3 kW ac inverters. Indra V2H . CoCharger Host, Interest in Ripple Energy & Abundance.
  • Petriix
    Petriix Posts: 2,047 Forumite
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    Well done for coming here to ask. The price is far too high and you will likely not see anything like those returns. If you are interested in solar PV then get some quotes from a range of installers, avoiding the pushy salesmen. You should be paying around £5,000 for 5.6kWp system. A battery will almost certainly not benefit you.
  • Hexane
    Hexane Posts: 520 Forumite
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    Suggest you work out yourself the current annual saving based on a saving of 50% of existing consumption then divide into the capital investment without assuming any annual inflation to give a more realistic return on investment. 
    On that basis, the quoted system will pay for its own cost in approximately 43 years. From there on, it's all profit.  :/
    7.25 kWp PV system (4.1kW WSW & 3.15kW ENE), Solis inverter, myenergi eddi & harvi for energy diversion to immersion heater. myenergi hub for Virtual Power Plant demand-side response trial.
  • ASavvyBuyer
    ASavvyBuyer Posts: 1,737 Forumite
    First Anniversary Name Dropper First Post
    edited 23 January 2021 at 11:36AM
    As Coastalwatch says, that inflation rate for electricity costs is a lot higher than the average rate, especially with more renewable energy coming on-line at a lower cost than other fossil fuel or nuclear generation.
    Also, you can get a much lower average p/kWh, by changing to a tariff like Octopus Go, Go Faster or Agile. For example, many people, including ourselves, are achieving average rates of less than 10p/kWh for all our imported electricity.
  • jimjames
    jimjames Posts: 17,611 Forumite
    Photogenic Name Dropper First Anniversary First Post
    edited 23 January 2021 at 2:56PM
    I found exactly the same trick with inflation rates when getting quotes back in 2011 for my solar system. The salesman didnt even realise that he was claiming electricity would potentially be costing 50% of takehome wages after 25 years if you actually considered what the numbers he was quoting would mean.
    Remember the saying: if it looks too good to be true it almost certainly is.
  • Hexane
    Hexane Posts: 520 Forumite
    First Anniversary First Post Name Dropper
    jimjames said:
    I found exactly the same trick with inflation rates when getting quotes back in 2011 for my solar system. The salesman didnt even realise that he was claiming electricity would potentially be costing 50% of takehome wages after 25 years if you actually considered what the numbers he was quoting would mean.
    Bizarrely, when I got a quote for a solar thermal system in the late 90's, the salesman did make clear that he was claiming gas would potentially be costing 50% of takehome wages after 25 years - and very nearly convinced me that no-one could possibly turn down the system since the risk of having to pay that much for gas just had to be avoided somehow! He very nearly made a sale - after a sales pitch lasting five to six hours which I don't think he had planned for, very determined fellow he was - but I narrowly managed to retain my sanity and get him out the door just before I cracked.
    7.25 kWp PV system (4.1kW WSW & 3.15kW ENE), Solis inverter, myenergi eddi & harvi for energy diversion to immersion heater. myenergi hub for Virtual Power Plant demand-side response trial.
  • Hexane
    Hexane Posts: 520 Forumite
    First Anniversary First Post Name Dropper
    I can't wrap my head round this at all. Does the system include a battery? Do the terms of the deal mean that you can't sell your surplus electricity under the Smart Export Guarantee, it becomes the property of this "Social Energy Supply LTD" instead? What happens if the assumption that benefits "are accrued by Social Energy (on the Customer's Behalf)" turn out not to be correct, for example if they don't make the money for you from Firm Frequency Response that the quote assumes they will? What will you do about that? Just write it off?

    We've got frequency response trial equipment in our home connected to our grid supply and our solar PV generation equipment. But I don't foresee any consumers making a steady and significant income stream from such services for quite some time.
    7.25 kWp PV system (4.1kW WSW & 3.15kW ENE), Solis inverter, myenergi eddi & harvi for energy diversion to immersion heater. myenergi hub for Virtual Power Plant demand-side response trial.
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