| Table 8.10.B. Proposed Transmission Capacity Additions by High-Voltage Size, 2012 - 2018 |
| (Circuit Miles of Transmission) |
| Voltage | Circuit Miles | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Type | Operating (kV) | Year 2012 | Year 2013 | Year 2014 | Year 2015 | Year 2016 | Year 2017 | Year 2018 | All Years |
| AC | 100-199 | 1,470 | 1,412 | 1,370 | 504 | 530 | 261 | 421 | 5,967 |
| AC | 200-299 | 1,038 | 658 | 641 | 1,027 | 237 | 596 | 487 | 4,685 |
| AC | 300-399 | 1,208 | 5,058 | 1,459 | 650 | 1,157 | 390 | 1,487 | 11,407 |
| AC | 400-599 | 226 | 450 | 861 | 677 | 3,400 | 980 | 709 | 7,303 |
| AC | 600+ | -- | -- | -- | -- | -- | -- | 258 | 258 |
| AC Total | 3,941 | 7,578 | 4,331 | 2,858 | 5,324 | 2,226 | 3,362 | 29,620 | |
| DC | 100-199 | -- | -- | -- | -- | -- | -- | -- | -- |
| DC | 200-299 | -- | -- | -- | -- | -- | -- | -- | -- |
| DC | 300-399 | -- | -- | -- | -- | 140 | -- | -- | 140 |
| DC | 400-599 | -- | -- | -- | -- | -- | -- | -- | -- |
| DC | 600+ | -- | -- | -- | -- | -- | -- | -- | -- |
| DC Total | -- | -- | -- | -- | 140 | -- | -- | 140 | |
| Grand Total | 3,941 | 7,578 | 4,331 | 2,858 | 5,464 | 2,226 | 3,362 | 29,760 | |
| Lines Taken Out of Service | -- | -- | -- | -- | -- | -- | -- | -- | |
| 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 and Demand Program Report." |