Not Another Solar Quote Thread

Options
bigstevex
bigstevex Posts: 913 Forumite
Name Dropper First Anniversary Combo Breaker First Post
edited 4 October 2022 at 12:56PM in Green & ethical MoneySaving
Can someone just sense check this for me please.  Batteries are Pylontech 3000C, reputable local installer, scaffolding all included (Jan install date potentially) all registered/accredited etc, I'm about to reply and say yes please.

Description of Goods Qty Unit Price Total Price
10 X JA Solar 385W Panels 1 £1,800.00 £1,800.00
Lux Hybrid 3.6k Inverter 1 £1,550.00 £1,550.00
Cable and Sundries 1 £255.00 £255.00
7.1kWh Battery Storage including long leads. 1 £2,750.00 £2,750.00
Roof Mounting Kit 1 £500.00 £500.00
Wi-Fi dongle for cloud access 1 £0.00 £0.00

Description of Services Qty Unit Price Total Price
Installation and Setup 1 £1,745.00 £1,745.00
Bird Protection + Installation 1 £450.00 £450.00
MCS + Part P Certification 1 £495.00 £495.00
Free Site Survey prior to installation 1 £0.00 £0.00
Free Online Monitoring 1 £0.00 £0.00
Goods & Services Sub Total: £9,545.00
VAT @ 0%: £0.00
Total: £9,545.00


«1

Comments

  • Screwdriva
    Screwdriva Posts: 1,174 Forumite
    First Post First Anniversary Name Dropper Photogenic
    Options
    Sorry to share, this quote makes little to no sense. 

    If you total everything up (minus batteries and bird netting), you are paying £6350 for a "budget" 3.85kW Chinese system. 

    For perspective, you can get:

    10 X 400W Sharp Panels
    10 X SolarEdge Optimizers
      1 X SolarEdge Inverter

    £5750 installed. 25 year warranty on everything. Better components, lower price, far superior warranty.

    I would not proceed with the above quote if I were you - reach out to other installers - you can do better.
    -  10 x 400w LG + 6 x 550W SHARP BiFacial Panels + SE 3680 HD Wave Inverter + SE Optimizers. SE London.
    -  Triple aspect. (22% ENE/ 33% SSE/ 45% WSW)
    -  Viessmann 200-W on Advanced Weather Comp. (the most efficient gas boiler sold)

    Feel free to DM me if I can help with any energy saving!
  • bigstevex
    bigstevex Posts: 913 Forumite
    Name Dropper First Anniversary Combo Breaker First Post
    Options
    Reached out to 15+ installers now, this is the only quote I've had returned in ~3 months of trying :( 
  • Alnat1
    Alnat1 Posts: 3,321 Forumite
    First Anniversary First Post Name Dropper
    Options
    I think that sounds fairly reasonable and about the right price with how things are at the moment.
    Barnsley, South Yorkshire
    Solar PV 5.25kWp SW facing (14 x 375 Longi) Lux 3.6kw hybrid inverter and 4.8kw Pylontech battery storage installed March 22
    Octopus Agile/Fixed Outgoing and Tracker gas
  • ABrass
    ABrass Posts: 1,003 Forumite
    First Post Name Dropper First Anniversary
    edited 4 October 2022 at 5:41PM
    Options
    Not great, but I've seen worse.

    3.85kW array and 7.1kWh battery is too heavily battery weighted for me. Most of the year you'll struggle to fill the battery unless you've got very low use. And if you've got low use them the battery isn't going to pay for itself.

    If you can, see if you can go for a larger solar array. Either significantly bigger at 6 or 8kW or just adding more panels to the current system.

    it's common to have more panels than your inverter can convert. In perfect conditions you miss out on a bit of power but I'm the rest of the 99% of the time you get the benefit of a larger array. You could go up to 12 or 13 before it would be an issue I believe.
    8kW (4kW WNW, 4kW SSE) 6kW inverter. 6.5kWh battery.
  • Solarchaser
    Solarchaser Posts: 1,663 Forumite
    First Anniversary First Post Name Dropper
    Options
    Looks a decent quote for decent kit, no need to pay over the odds for a brand name.
    I have lux inverters as do a few regular users, no issues that i know of so far.

    I would agree with Mr. Brass though, if your roof will physically take more panels, fill that blighter with panels., you can see yourself the panels are £180 a pop, so doubling them would only cost another £1800 for double the solar benefits 
    West central Scotland
    4kw sse since 2014 and 6.6kw wsw / ene split since 2019
    24kwh leaf, 75Kwh Tesla and Lux 3600 with 60Kwh storage
  • Alnat1
    Alnat1 Posts: 3,321 Forumite
    First Anniversary First Post Name Dropper
    Options
    My system was installed in March, Lux hybrid and pylontechs. I've got 5.25 on the roof and 4.8 batteries. I paid £8,600. Happy with the set up and more battery wouldn't make financial sense for me. 

    As mentioned above, get more on the roof if you possibly can or consider saving a bit with less battery. Pylontechs are easy to add later, panels aren't.

    I found this calculator which seems to make more sense of ROI than the installer quotes
    https://great-home.co.uk/solar-export-guarantee-seg-calculator
    Barnsley, South Yorkshire
    Solar PV 5.25kWp SW facing (14 x 375 Longi) Lux 3.6kw hybrid inverter and 4.8kw Pylontech battery storage installed March 22
    Octopus Agile/Fixed Outgoing and Tracker gas
  • bigstevex
    bigstevex Posts: 913 Forumite
    Name Dropper First Anniversary Combo Breaker First Post
    edited 4 October 2022 at 11:12PM
    Options
    We’re limited to 10 panels sadly on main roof as we have 2 velux windows right in the middle for the loft conversion.  Roof is south facing and unshaded though so good sun all day

    We could do another 5 panels on the garage roof but that array would have a slight shading issue I think.  Is it possible to have 3 strings? They have done the 10 panels as 2 strings of 5 and the inverter can only take 2 strings max from memory.

    Considering going octopus go for the cheap night charging too to make better use of the batteries too.  They quoted me originally for the 4.8kw batteries but the bigger ones were £600 more and had a higher discharge power I think they said too
  • ABrass
    ABrass Posts: 1,003 Forumite
    First Post Name Dropper First Anniversary
    edited 4 October 2022 at 11:32PM
    Options
    If you go for Optimisers/micro inverters then you can have any combination of orientation and partial shading.

    Or with a larger conventional Inverter you could have your main roof as one string of 10 and the garage as a second string of 5.

    Octopus go is only available if you have an EV, but if you do then large batteries make a lot of sense. Solar covers as much as it can during the day and then top the batteries up overnight.
    8kW (4kW WNW, 4kW SSE) 6kW inverter. 6.5kWh battery.
  • bigstevex
    bigstevex Posts: 913 Forumite
    Name Dropper First Anniversary Combo Breaker First Post
    Options
    ABrass said:
    If you go for Optimisers/micro inverters then you can have any combination of orientation and partial shading.

    Or with a larger conventional Inverter you could have your main roof as one string of 10 and the garage as a second string of 5.

    Octopus go is only available if you have an EV, but if you do then large batteries make a lot of sense. Solar covers as much as it can during the day and then top the batteries up overnight.
    Thanks, will ask installer about the extra 5 panels.  Would economy 7 or agile octopus be better to consider?
  • Alnat1
    Alnat1 Posts: 3,321 Forumite
    First Anniversary First Post Name Dropper
    Options
    I'm on Agile in and out as we don't have an EV. This summer the Outgoing prices were really high but I don't think that's going to be the norm. The prices overnight on Agile have had some cheaper slots recently and I've made use of these, topping the battery up and running appliances. Windy weather tends to mean lower prices on both incoming and outgoing.

    It really depends if you want a "fit and forget" type system, or if you're like me, energy monitoring becomes a new hobby and you've time to check out the prices and make adjustments to when you run appliances, fill the battery etc.

    E7 might work but I don't know the new rates.
    Barnsley, South Yorkshire
    Solar PV 5.25kWp SW facing (14 x 375 Longi) Lux 3.6kw hybrid inverter and 4.8kw Pylontech battery storage installed March 22
    Octopus Agile/Fixed Outgoing and Tracker gas
Meet your Ambassadors

Categories

  • All Categories
  • 343.7K Banking & Borrowing
  • 250.2K Reduce Debt & Boost Income
  • 449.9K Spending & Discounts
  • 235.8K Work, Benefits & Business
  • 608.9K Mortgages, Homes & Bills
  • 173.3K Life & Family
  • 248.4K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 15.9K Discuss & Feedback
  • 15.1K Coronavirus Support Boards