The local offers presented here are indeed applicable. Regional or national should not be bad and often represents the market better than the plumber with Vaillant photovoltaics next door ;-)
This applies to the local offers presented here, yes. Regionally it doesn't have to be bad and often represents the market better than the plumber with Vaillant photovoltaic next door ;-)
In most cases you will probably be right. To my own surprise, for example, I had also had the opposite experience. Next door - also very competent, interested and significantly cheaper than several regional providers.
My system is from Dorstsolar, I believe Christian also installs nationwide. Reliable, nice contact, and above all, he doesn’t try to sell you anything you don’t need.