2002 NAICS Definitions

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--

• 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.

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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

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