Train Services in Tokyo Resume Following Power Outage That Suspended Yamanote, Keihin-Tohoku Lines (Update 4)

The Yomiuri Shimbun

8:41 JST, January 16, 2026

Train services on the Yamanote Line and the Keihin-Tohoku Line resumed operation on Friday afternoon after they were suspended as a result of a power outage that occurred in the early hours of the morning.

According to operator East Japan Railway Co. (JR East), the outage occurred while attempting to connect electricity from the Tamachi substation in Minato Ward, Tokyo, to the Shimbashi-Shinagawa section of tracks in preparation for the day’s first train. Power to the section had been cut off to allow for nighttime maintenance work after regular services ended for the night.

JR East is investigating the cause of the power outage, which also temporarily suspended services on the Tokaido Line, Takasaki Line, Yokusuka Line and Utsunomiya Line. Some trains on the Joban line were also affected.

The Keihin-Tohoku Line resumed full operations at 7:22 a.m., but another power outage occurred about 26 minutes later, bringing trains to a halt. Two trains became stuck between Takanawa Gateway and Tamachi stations and between Shimbashi and Hamamatsucho stations, which left passengers stranded for about an hour. According to the Tokyo Fire Department, nine individuals believed to be passengers ranging in age between their 20s to their 60s reported feeling unwell around 11 a.m.