I wasn't ripped off, but I didn't go for the cheapest quote either. I wasn't trying to suggest my installation was typical or what someone could expect to pay in the UK, the point I was trying to make was the cost of labour adds significantly, and overall even if you paid half what I did, it's still too much to expect the majority of UK households to take it up.
My system is larger than typical for a UK home, I also paid a premium to have it installed by a company with an excellent reputation for their work, I'd had a new roof the week before and wanted a high quality installation.
I also went with a company that let me decide how I wanted it installed; other companies wanted to put the batteries in my loft or under the stairs which was an absolute no from me, I don't want them inside my home, and I had them install the batteries and inverter in a brick out house on the opposite end of the property to where the consumer unit is, again, at a premium.
I had per-panel optimisers and monitoring hardware installed, and because I wasn't aware of it until later, I added the bird-mesh on after signing the contract and did get ripped off on that part (NOTE: if you get solar in the UK, and have ever so much as seen a pigeon, get bird mesh).
It's also worth noting that checking today, all of the hardware has dropped in price, my panels are now 20% cheaper, batteries are 15% cheaper, inverter is 10% cheaper, and I imagine installations and labour might be cheaper in the winter than the peak of summer like I had mine installed.
All of that said, the total cost of installation doesn't really matter so much as the ROI, which for me works out at most ~6 years, if none of the hardware fails in the meantime.
EDIT: There's a mistake in my previous comment which I based all of the subsequent numbers on; the cost of 2 batteries + inverter was closer to £5k not £3.5k.
Absolutely. A local company is currently advertising 12 470w panels, 10kwh storage for £7695 fully installed with additional pannels fully installed for £200 each. /r/uksolar is a great resource for comparing quotes.
There are a lot of variables that need to be factored in, and they don't cover many of them in these cheaper quotes.
What size inverter? Is it a hybrid inverter? 10kWh of Storage is 8-9kWh usable because batteries are only warrantied to 80-90% depth-of-discharge, is that enough?
Since there's only ~5.6kWp of panels in that quote it's probably over-provisioned, and it will likely come with a smaller inverter, say 3.6kW, which is what a lot of these cheaper companies will do, and export will be limited under G98 to 3.68kW.
That also means that in peak sun, your 5.6kW of panels are going to clip at the inverter capacity and you won't be able to access more than that limit in power.
£200 per extra panel isn't bad, the company I went with charged £300, but mine came with per-panel optimisers (at my request, mainly for the monitoring functionality rather than optimisation). If I wanted to add an additional elevation though, that would be per-panel cost plus ~£2000 for the additional elevation of scaffolding.
If you're going for one of these installations and haven't already, ask these questions, and if you can get a decent price that's great, I wish you luck. I'm not on reddit so I can't comment on the quality of that sub.
That quoted price is nuts I did it cheaper in Canada in 2007. And that was with tracking panels (which I would never do again, I'd just buy more panels).
