NAICS UNIVERSITY · Free research for insurance agents
Electric Bulk Power Transmission and Control
NAICS 221121 · United States · 2022 edition
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.
Start the review with property.
For Electric Bulk Power Transmission and Control, the saved research highlights property, general liability, environmental liability. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- How many miles of transmission line does the operation cover, and in what geographic regions?
- How many substations and transformer stations are in the portfolio, and what are the estimated replacement values?
- Are any transformers known to contain PCBs or other regulated substances?
- What percentage of infrastructure runs through wildfire-designated high-risk zones?
- Are SCADA or grid control systems internet-connected or otherwise cyber-accessible?
- What is the prior five-year loss history, particularly for environmental, third-party property damage, or workers' comp events?
- For Electric Bulk Power Transmission and Control, what should the underwriter know about operations in active wildfire risk zones with overhead transmission lines?
- For Electric Bulk Power Transmission and Control, what should the underwriter know about aging transformer fleet with known pcb-containing equipment or deferred maintenance?
Activities described by this code
Other activities to examine
- Generating electric energy: 22111 — Electric Power Generation;
- Distributing electricity to final consumers: 221122 — Electric Power Distribution
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
Establishments in this class operate high-voltage transmission lines, substations, and transformer stations that move bulk electricity from generation sources to distribution centers or other utilities. Day-to-day operations involve monitoring and controlling voltage levels, maintaining transmission infrastructure, and coordinating grid reliability — often across large geographic footprints with significant capital-intensive equipment.
Questions to investigate
- How many miles of transmission line does the operation cover, and in what geographic regions?
- How many substations and transformer stations are in the portfolio, and what are the estimated replacement values?
- Are any transformers known to contain PCBs or other regulated substances?
- What percentage of infrastructure runs through wildfire-designated high-risk zones?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.