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Electric Power Annual 2010 Data Tables

With Data for 2010   |  Release Date:  November 09, 2011   |  Next Release Date: November 2012

Table 4.5.B. Proposed Transmission Capacity Additions by High-Voltage Size, 2011-2017
(Circuit Miles of Transmission)
Voltage Circuit Miles
Type Operating (kV) 2011 2012 2013 2014 2015 2016 2017 All
Years
AC 100-199 1,164 1,749 932 738 466 368  214 5,630
AC 200-299 1,007 1,091 708 822 895 241 157 4,922
AC 300-399 555 1,336 4,934 1,234 699 476 1,156 10,390
AC 400-599 116 695 633 782 2,802 1,438 440 6,906
AC 600+ - - - - 275 - - 275
AC Total   2,841 4,871 7,208 3,577 5,137 2,524 1,967 28,124
DC 100-199 - - - - - - - -
DC 200-299 - - - - - - - -
DC 300-399 - - - - 140 - - 140
DC 400-599 - - - - 60 640 - 700
DC 600+ - - - - 142 -   - 142
DC Total   - - - - 342 640 - 982
Grand Total   2,841 4,871 7,208 3,577 5,479 3,164 1,967 29,106
Lines taken out of service   99 180 21 121 33 134 - 587
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.
• Some structures were designed and then built to carry future transmission circuits in order to handle expected growth in new capability requirements.
• Lines are taken out of service for a variety of reasons including intentional changes to the right-of-way to better useavailable land for different levels of voltage and types of poles and towers.
Source: U.S. Energy Information Administration, Form EIA-411, "Coordinated Bulk Power Supply Program Report."