You know as well as we do that more and more houses and settlements are equipped with renewable energy systems. So far, so good. The much more recent development is the shift from the increasing number of individual devices to the combination of two and more systems - connectivity.
In general, the initial expenses for the digitization and connectivity of decentralized energy systems are still very high today, since there are only corresponding standards for small subsectors (e.g. SunSpec protocol for inverters) and these are not yet compatible with each other.