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., regulating voltages) 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--
  • Generating electric energy--are classified in Industry 22111, Electric Power Generation; and
  • Distributing electricity to final consumers--are classified in U.S. Industry 221122, Electric Power Distribution.
2007
NAICS
  2012
NAICS
  2017
NAICS
  Corresponding Index
Entries
221121 221121 221121  Electric power control
221121 221121 221121  Electric power transmission systems
221121 221121 221121  Transmission of electric power