I paid £6k in Feb 2019 for 14 high end 300w Italian panels and a "Solar Edge" Optimiser system that deals with a tiny shading issue in high summer, but is very very efficient. And this still in the FIT Era.I got a quote through SolarTogether and sort of assumed it is a good quote. It is part of a group buying scheme by the council, I thought it is probably as good a value I am going to get - plus a vetted supplier. But I have had some great responses to my other question and somebody pointed me to a Youtube channel "The EV Puzzle", where Nigel talks about a 14 panels system costing only £4K in the video from earlier this month. The quote now doesn't seem good at all, so I thought what people think.
The installer has quoted nearly £3.7k for 8 panels (includes everything incl. installation over slate tiles) and jumps to £4.3k for 10 panels. There is a quote for battery too but I am not keen on getting that just now.
Contact Tanget Solar , @Trevor Larkum runs it along with another great guy Jason. They did an excellent job for me. If you want a basic 4kw panels / invertor system not high end fancy i suspect they will get close to £4k now and certainly should be able to beat £3.7k for just 8 panels.
Solar & Battery Installed Together - Tanjent Energy (tanjent-energy.com)
I'm sure Trev will be along to say hi too.