Table 8.10.A. Existing Transmission Capacity by High-Voltage Size, 2014
 

Voltage Circuit Miles
Type Operating (kV) frcc mro npcc rfc serc spp tre wecc Contiguous U.S.
    -- -- -- -- -- -- -- -- --

 

Voltage Circuit Counts
Type Operating (kV) frcc mro npcc rfc serc spp tre wecc Contiguous U.S.
    -- -- -- -- -- -- -- -- --

Notes:
NERC region and reliability assessment area maps are provided on EIA's Electricity Reliability web page: http://www.eia.gov/cneaf/electricity/page/eia411/eia411.html
Circuit miles do not equal physical miles on the ground; the reference terminology for that concept is structural mile.
Source: U.S. Energy Information Administration, Form EIA-411, "Coordinated Bulk Power Supply and Demand Program Report."