2017 NAICS Definition
T = Canadian, Mexican, and United States industries are comparable.
221111 Hydroelectric Power Generation
This U.S. industry comprises establishments primarily engaged in operating hydroelectric power generation facilities. These facilities use water power to drive a turbine and produce electric energy. The electric energy produced in these establishments is provided to electric power transmission systems or to electric power distribution systems.
2007
NAICS | | 2012
NAICS | | 2017
NAICS | | Corresponding Index
Entries |
| 221111 | | 221111 | | 221111 | | Electric power generation, hydroelectric |
| 221111 | | 221111 | | 221111 | | Hydroelectric power generation |
| 221111 | | 221111 | | 221111 | | Power generation, hydroelectric |