What do I need for a full system.

2

Comments

  • Zarch
    Zarch Posts: 393 Forumite
    First Anniversary Name Dropper First Post
    edited 4 December 2018 at 2:37PM
    mgbond wrote: »
    Perfect, thanks.


    Here is a contentious one. How about Ikea, their Roof plus offer is 295kwh panels and 16 panels at around 7k. However they do not use micro inverters or Solar Edge?

    Probably still a bit pricey. The Solar Edge optimisers are around £50 each, so they can add up on a larger system.

    But you don't always need solar edge. Shade is the main reason you'd need it. Do you have any shade issues?

    Without SE.... on two aspects you'd put each aspect on a separate string so they'd work independently. But any shade at all and every panel in the whole string would only perform at the input of the worst one in the string. This is where Solar Edges comes in with the micro inverters/optimisers as they allow each panel to work in isolation and are not affected by any other panel. So they'd work to their maximum regardless if others are in shade.

    So really take a look up over this week, throughout the day at where you may or may not have shade.

    Also, a general price to shoot for around £1k per 1kWh of system....... or slightly higher when factoring in the price of Solar Edge, but not by too much.
    17 x 300W panels (5.1kW) on a 3.68kW SolarEdge system in Sunny Sheffield.
    12kW Pylontech battery storage system with Lux AC controller
    Creator of the Energy Stats UK website and @energystatsuk Twitter Feed
  • mgbond
    mgbond Posts: 86 Forumite
    Zarch wrote: »
    Probably still a bit pricey. The Solar Edge optimisers are around £50 each, so they can add up on a larger system.

    But you don't always need solar edge. Shade is the main reason you'd need it. Do you have any shade issues?

    Without SE.... on two aspects you'd put each aspect on a separate string so they'd work independently. But any shade at all and every panel in the whole string would only perform at the input of the worst one in the string. This is where Solar Edges comes in with the micro inverters/optimisers as they allow each panel to work in isolation and are not affected by any other panel. So they'd work to their maximum regardless if others are in shade.

    So really take a look up over this week, throughout the day at where you may or may not have shade.

    Also, a general price to aim for is £1k per 1kWh of system....... this might be slightly higher when factoring in the price of Solar Edge, but not by too much.


    Sorry that was for 18 panels. my roof is 22deg and doesn't get shade as such.
    in the winter the sun is low but the roof is higher than any trees
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • mgbond
    mgbond Posts: 86 Forumite
    mgbond wrote: »
    Sorry that was for 18 panels. my roof is 22deg and doesn't get shade as such.
    in the winter the sun is low but the roof is higher than any trees


    Told a fib, Trees to the south of the property are a bit higher than the house.


    ZVn8iWNfBuKvM7rB8
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • mgbond
    mgbond Posts: 86 Forumite
    edited 4 December 2018 at 4:28PM
    Trying to load up a picture but it doesn't seem to be working. this is such a clunky Forum platform.


    ZVn8iWNfBuKvM7rB8
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • theboylard
    theboylard Posts: 1,206 Forumite
    Combo Breaker First Post First Anniversary
    Drop the pic on https://postimages.org/, don't need to register, then copy the link and hit the insert image link in a reply.


    Yes it is clunky!!
    4kWp, SSE, SolarEdge P300 optimisers & SE3500 Inverter, in occasionally sunny Corby, Northants.
    Now with added Sunsynk 5kw hybrid ecco inverter & 15kWh Fogstar batteries. Oh Octopus Energy too.
  • mgbond
    mgbond Posts: 86 Forumite
    Just had a quote from Ikea. Looks ok. Although I’m now looking to go bigger and apply for over a 5kw system

    https://postimg.cc/gallery/2j0sslrb6/
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • mgbond
    mgbond Posts: 86 Forumite
    Do people know of Contact Solar. They have quoted 5300 for a 5.1kw system (16, 295 Q cell panels). And 8300 for 18 panels with 4.8kw storage. I can up that to 23 panels with the storage for 10,000. So 6.785kw system.

    What do you think
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • mgbond
    mgbond Posts: 86 Forumite
    Just got them to re quote. 17 panels £5600. 20 panels with 4.8kw Storage £9000.

    What do you think
    6kWp system, 20 x 300W Longi Solar panels with a Solis 6.0 inverter + Wifi and iBoost
    22deg pitch East to west 12 panels on the East and 8 on the West
  • zeupater
    zeupater Posts: 5,355 Forumite
    First Anniversary Name Dropper First Post Combo Breaker
    mgbond wrote: »
    Just got them to re quote. 17 panels £5600. 20 panels with 4.8kw Storage £9000.

    What do you think
    Hi

    I think that you need to decide on what you want the system to look like on the roof, settle on how many panels you want and then think about whether you want a battery system installed at the same time ...

    The last 2 short posts alone have mentioned 16, 17, 18, 20 & 23 panels! ...

    When you're looking to re-negotiate the idea is to tell them that they are too expensive on a existing offer and to reduce the prices, for example, moving from 18panels+4800Wh stg for £8300 to 20panels for £9k simply gives them an extra 2 panels of sales at £350each which would be higher than they'd have built into the original bid .... ie your comparable 16 panel system for £5.3k (without the battery) only works out at £331/panel(5300/16) before inverter, cables, scaffold etc! ... not a good value alternative!

    Prices don't look too bad though, but best settle on what you want first, ask your questions, then drive for a good deal with the supplier ... don't let them try to take control through introducing the complexity of alternative which may (a) not suit your requirements & (b) don't offer better value.


    HTH
    Z
    "We are what we repeatedly do, excellence then is not an act, but a habit. " ...... Aristotle
    B)
  • mre15
    mre15 Posts: 85 Forumite
    First Post First Anniversary
    Other things to consider is your mention of a little shading from trees. The trees will grow and may become a bigger problem. Consider this now as a solar system should be considered very long term project.
    I had a quote from Contact Solar but didn't end up using them and have gone with a more local supplier to me instead. Contact Solar were reasonably priced to start but offered virtually no movement on that price.
    You also need to take a look at exactly what equipment they would be supplying. My quote from them was for a Solax hybrid inverter and on checking it was a model that has now been discontinued.
    It wasn't a bad product just a slightly older model.
    4.6kWp PV Comprising 16 x Jinko Solar Maxim Optimised 290W panels SSE Facing, Solis Hybrid Inverter and 7.2 kWh Pylontech batteries. Gloucestershire.
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