phil59 wrote:Where is the line, which indicates that the paperwork is provided with.
Round prices, for me, that means let's discuss the price ....
Agree with the remark on the various certificates and the relation with Enedis or equivalent, things must be clarified on who does and provides what.
On the other hand, it does not necessarily shock me that the installer makes a "reasonable" margin on the solar "KIT", in the event of a problem before or after the installation, a faulty panel for example, it is he who will have to deal with it. recover during the warranty period.
Or you have to find a guy who only does the installation, using a solar KIT supplied by the customer. Not easy to find, except self-employed, but there it may complicate the paperwork side. And in the event of a gear problem, well, it's up to the customer to deal with it.