As of the end of FY2023
| Nishi-Gunma Trunk Line | Minami-Niigata Trunk Line | Higashi-Gunma Trunk Line | Nishi-Iwaki Trunk Line | |
|---|---|---|---|---|
| Section | Nishi-Gunma Switching Station - Higashi-Yamanashi Substation | Kashiwazaki-Kariwa Nuclear Power Station - Nishi-Gunma Switching Station | Nishi-Gunma Switching Station - Higashi-Gunma Substation | Minami-Iwaki Switching Station - Higashi-Gunma Substation |
| Length | 137.7km <0.9km> | 110.8km <61.2km> | 44.4km | 195.4km |
| Voltage and Number of Circuits | 1MVdesign 2 circuits <a portion is 500 kV> |
1MV design 2 circuits <a portion is 500 kV> |
1MV design 2 circuits | 1 MVdesign 2 circuits |
| Power Lines | ACSR 610mm2, 810mm2×8 conductors |
ACSR 610mm2, 810mm2×8 conductors <810mm2×4 conductors> |
ACSR 610mm2, 810mm2×8 conductors Low-noise ACSR 960mm2×8 conductors |
ACSR 610mm2, 810mm2×8 conductors Low-noise ACSR 940mm2, 960mm2×8 conductors |
| Pylons | Number: 217 <4> Height: 111m <70m> average |
Number: 201 <114> Height: 97m <89m> average |
Number: 70 Height: 115m average |
Number: 335 Height: 119m average |
| Start of Construction | September 1988 | March 1989 | September 1992 | November 1995 |
| Start of Operation | April 1992 | October 1993 | Line 2: April 1999 | Line 2: July 1999 |
| Line 1: June 1999 | Line 1: October 1999 |
(Note)
- Contents in brackets apply to sections designed for 500kV.
