This U.S. industry comprises establishments primarily engaged in operating electric power transmission systems and/or controlling (i.e., regulatory voltage) the transmission of electricity from the generating source to distribution centers or other electric utilities. The transmission system includes lines and transformer stations.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221121 | 221121 | 221121 | Electric power control |
| 221121 | 221121 | 221121 | Electric power transmission systems |
| 221121 | 221121 | 221121 | Transmission of electric power |
