Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. industrial structures
9. industrial buildings
10. utilities buildings
11. power plant buildings (utilities buildings)

Anotations

Scope note:

Buildings in which electricity or other forms of power are generated for the operation of machinery or vehicles, or supplying power to other buildings in a complex. Dstinguished from "power plants" which are larger complexes producing power on a much larger scale for a community, and which can include a "power plant building" on the premises.