Well, my husband has a master's degree in electrical engineering, my BIL is a mechatroniker for a big production line, my son is studying informatics, and I am a logistician and informatician. Getting to install and maintain the equipment is one of the selling points. They already did my BIL's house, after all.

That's why there are so many electricified houses out here, in the country: we have lots of land, lots of roof, and lots of techies.

We're the people other people hire, for this stuff.