Commuters are experiencing massive MTA delays over a power failure at rail control.

Travelers were warned Wednesday to expect “extensive delays” on all subway lines, according to the MTA’s online service tracker.

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mta line power outage

The outage was reported at 1:30 p.m. on the MTA’s website.

In addition to the power outage, signal problems were further stalling trains on the Nos. 1, 2, 3, 4, 5 and 6 lines, the agency said. h/t pix

mta line power outage subway

A spokeswoman for the MTA said at 2 p.m. that service was running with delays.