221121 Electric Bulk Power Transmission and Control
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 1997 to 2002 | 2002 NAICS to 1987 SIC | 1997 Economic Census | Bridge Between 1997 NAICS and SIC |
2002 NAICS | 1997 NAICS | 1987 SIC | Corresponding Index Entries |
---|---|---|---|
221121 | 221121 | Electric power control | |
221121 | 221121 | Electric power transmission systems | |
221121 | 221121 | Transmission of electric power |