Electricity
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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.A. Existing Transmission Capacity by High-Voltage Size, 2010 | ||||||||||
| (Circuit Miles of Transmission) | ||||||||||
| Voltage | Circuit Miles | |||||||||
| Type | Operating (kV) | FRCC | MRO | NPCC | RFC | SERC | SPP | TRE | WECC | Contigious U.S. |
|---|---|---|---|---|---|---|---|---|---|---|
| AC | 100-199 | - | - | - | - | - | - | - | - | - |
| AC | 200-299 | 5,922 | 7,241 | 1,521 | 6,949 | 21,100 | 2,776 | - | 36,810 | 82,319 |
| AC | 300-399 | - | 11,468 | 5,064 | 13,610 | 3,538 | 4,934 | 9,500 | 10,301 | 58,415 |
| AC | 400-599 | 1,201 | 473 | - | 2,551 | 8,617 | 47 | - | 12,729 | 25,618 |
| AC | 600+ | - | - | 19 | 2,226 | - | - | - | - | 2,416 |
| AC Total | 7,123 | 19,182 | 6,774 | 25,336 | 33,255 | 7,757 | 9,500 | 59,840 | 168,768 | |
| DC | 100-199 | - | - | 48 | - | - | - | - | - | 48 |
| DC | 200-299 | - | 930 | - | - | - | - | - | - | 930 |
| DC | 300-399 | - | - | - | - | - | - | - | - | - |
| DC | 400-499 | - | 872 | - | - | - | - | - | - | 872 |
| DC | 500-599 | - | - | - | 66 | - | - | - | 2,137 | 2,203 |
| DC | 600+ | - | - | - | - | - | - | - | - | - |
| DC Total | - | 1,802 | 48 | 66 | - | - | - | 2,137 | 4,053 | |
| Grand Total | 7,123 | 20,984 | 6,822 | 25,402 | 33,255 | 7,757 | 9,500 | 61,977 | 172,820 | |
| 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 use available 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." |
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