I'm going through the same exact process. I paid the $100 and got a Solar Layout that was the opposite of what most other providers had recommended. More panels on the North side then South where I'd have the most exposure to sun. I was recommended the medium size at 8.16kw which were 24 panels producing 7.4kw annually. When I pushed back on the layout and gave them a copy of the suggested layout, they came back relatively quickly and provided a redesigned layout. The new layout conformed to my request, all panels facing south. However, they reduced the size to 6.8kw, 20 panels, with estimated production of 8.4kw annually. What a difference. Lower cost, greater output.
My only concern is the warranty right now. Though the panel's data sheet shows 25 year product and performance warranty, my solar agreement says 'minimum of 12 years' workmanship warranty and 25 years performance. I asked Tesla to update agreement to match this data sheet at 25 years and they refused to make any updates. Not sure if the spec sheet of the Q-cell G6+ is only alluding to the performance warranty. The other issue I have is that my Solar Layout shows the G6+ panels, but when I asked my rep which panels I'll be receiving, she said the G8. They both show pretty much the same specs, but G6+ has he 25 year warranty.
