Balcony solar (Balkonkraftwerk)
By Priya Nair · Last reviewed The everyday name for plug-in solar installed on or beside a balcony — one to four panels on a railing or stand, a microinverter, and a cable to a household outlet. The German term Balkonkraftwerk (balcony power plant) named the category; Germany counts about one million registered systems and an estimated four million installed.
Why it matters
Balcony solar is the use case that proved plug-in solar at scale and shaped the regulatory template — an 800 W output cap with simple registration — that other countries are copying. When US or UK rules reference the category, the German framework is the precedent behind them.