James wants 17kWp of PV. At £2 + VAT that is £34K + VAT, plus £10K+ for inverters (from Navitron). £60K seems too much for a community project where you would expect bulk savings.
I'm fairly sure Ivan has plans to organise an inspector who will approve a DIY install of Navitron panels for FITs, for a reasonable fee. Several community properties could be inspected in one day??
-Paul
Not sure. £44 + VAT @ 17.5% (because bought separately) is £51,700. You're then asking for five separate mounting kits, five separate electrical installations, around 12 man days of roofing work , five sets of paperwork and five warranties. Plus allowing people to make a margin. That would seem to come to around £60k even if the panels are supplied by Navitron (or equivalent)
The reason for MCS installers not wanting to work with your own panels is that (a) they might not have the correct mounting systems in stock (b) they make less money (c) They carry more risk as they're warrantying something they're not used to. The main one of these is (b) at a time when he industry is rammed and most people have a full book of work.
The 'bulk buy' you're considering is also not really 'bulk' when compared to companies buying megawatts a year, so I think you'll find a fair few MCS installers willing to take the whole thing on for your price bracket including supply of the panels (be they navitron Yingli's or equivalent).
Cheers,
Aidan