Subway riders were experiencing hours-long suspensions and delays for the second time in two days Thursday, after another power outage caused signal problems at Manhattan’s West Fourth Street station.

NYC subway service was disrupted Thursday in Manhattan after a power outage near the West Fourth Street-Washington Square station, the MTA says.

Big Apple subway commuters faced mass rush-hour delays for the second time in a week Thursday after a power outage near Manhattan’s West Fourth Street station upended multiple train lines again — just a day after the MTA announced probable price hikes.