TEPCO Illustrated

Electricity Supply Facilities
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Transmission Facilities by Voltage

As of the end of FY2016

Voltage
(kV)
Overhead Underground
Route Length (km) Circuit Length (km) Number of supports (units) Route Length (km) Circuit Length (km)
500 2,453 4,520 5,281 40 79
275 1,169 2,320 3,205 404 1,151
154 2,953 6,000 10,108 311 762
66 7,706 14,981 24,852 3,573 6,734
Below 55 500 544 6,923 2,064 3,599
Total 14,781 28,365 50,369 6,391 12,325

(Notes)

  1. Route length refers to the total length between two points on a line (horizontal length between supports). Circuit length refers to the sum of the route length of each circuit on a line.
  2. Due to the Accounting Rules for Electricity Business amendment (effective from March 29, 2000), distribution facilities with voltage over 20 kV have been included in transmission facilities since FY1999.
  3. The sum is not equal to a total of breaskdown due to rounding.