The lights went out at Meadowhall this afternoon after a power cut.
Problems began at around 2.30pm this afternoon when power went out a number of the mall's stores.
One shopper told The Star: "We were in House of Fraser when suddenly all the lights went out and everything went black.
"It was like that for a few minutes and people started to become panicky. It was quite scary.
"The lights came back on for a bit but have since gone off again."
Shops on the upper and lower levels of the shopping centre have been affected.