ᐅ Energy Retrofit of a Single-Family Home Built in 1980 / Is Electrical Rewiring Necessary?

Hi

We are currently planning for ourselves and estimating the costs for our plans.

If solar panels, a heat pump, electric roller shutters, and a wallbox are to be retrofitted, and a few new or additional sockets are to be installed throughout the house, would you expect a complete rewiring? That is, all cables replaced, fuse box etc.?

If the electrical system is around 30 years old, then it should be replaced.

Definitely new. When this was planned and built, only a fraction of today’s electrical load was running through the wiring. Forty years ago, peak loads might have been around 3 kW. Today, you can reach that just by turning on the kettle. Of course, this is complex and creates a mess. But being careless here will cause problems later on.

And if you are redoing the electrical work, also consider installing proper network cabling.