Unable to answer "What kind of building is this?" for https://osm.org/way/712303705 via StreetComplete 54.0:

Substation

Attached photo(s):
https://westnordost.de/p/180433.jpg
https://westnordost.de/p/180434.jpg
https://westnordost.de/p/180435.jpg
https://westnordost.de/p/180436.jpg