Jersey Central Power & Light says a problem at one of its substations in Essex County cut power to The Mall at Short Hills in Millburn on Friday morning.
JCP&L spokesman John Anderson tells The Associated Press the outage occurred at 6:58 a.m. and lasted about 10 minutes before power was restored.
The outage also affected parts of Summit, Millburn, Madison and Short Hills.
The cause is under investigation, and Anderson says crews are monitoring the scene.
According to its website, the mall was scheduled to open at 8 a.m. Friday.