The power has returned to four Las Vegas Strip casino resorts.
A blown transformer near an intersection caused outages and left dozens of people stuck in elevators for more than an hour.
Clark County Fire Department spokesman Scott Allison said the transformer blew shortly before 8 p.m. Tuesday, leaving the hotel towers at Mandalay Bay, Luxor, Excalibur and Four Seasons Hotel without power for 90 minutes.
No injuries were reported. It wasn't immediately clear what caused the transformer failure.