When the lights went out

We went to dinner last night at McGrath's Fish House. We we finished eating and the waiter was bringing our check. While we were loading the take home boxes with the kids unfinished meals the lights went off, flickered back on and then went off again, this time they stayed off! (just after 7PM) The emergency lights were on for a few minutes, but then those went off. The waiter came with our check, but we couldn't pay with a credit card. They were trying to figure out what the back up system was. We finally decided to pay with a check and leave. We had gone up to my parent's house in PG and on our way back through Orem, we noticed that the power was still out in this area (including a hotel and Walmart). (around 8:30PM)