My initial enquiry was handled well, but a mistake in the exclusion of the scaffold price - that would have made them non-competitive - went into a long wrangle, with them even offering to take back the equipment and cancel the contract because of their mistake. The (subcontracted) installation team was very good and installed a much tidier panel layout than GG's Google Maps design - I could easily have fitted twelve rather than ten panels. Equipment delivery is by pallet truck - and with no warning - so if you have a gravel (or not perfectly even) drive the stuff is left kerbside. Nice to know when you've got a £4k battery sitting unprotected in a public space. And, bizarrely for an environmental company, on a plastic pallet that doesn't fit in a car for disposal. My local tip charged me £6 to take it. The scaffolding issue meant eight weeks of equipment sitting around waiting for access - and of course, the onus had been switched to me by then. Thanks for that. Eventually, I sourced the local scaffolders (at a quarter of the GG estimated cost) and they agreed to pay just 50% of that - so only an eighth of the cost they had actually committed to (and confirmed as their mistake when they reviewed the call recordings. Their phone system is a mess - a single number for everyone and you can never speak to the right person. Departments don't speak to each other, so you will get lots of calls from different people on the same (or random, unconnected) topics. Bearing in mind they supply the same - mainly imported - kit as everyone else, any cost premium is in the service, which is where I thought they fell down badly. Overall, the system as installed seems to work well, but I'd think long and hard about using GG again. It started and ended really well, but the middle was really muddled and at times, disingenuous.