Super Bowl power outage: Baltimore Ravens, 49ers stay on field after electricity goes out in half the Superdome.
Several security scares occurred before Super Bowl XLVII blackout
Super Bowl blackout caused by 'failure of device protecting power supply', Super Bowl XLVII
Lights out: Power outage stops game at Super Bowl
Super Bowl — Power Failure Delays Game - The New York Times
Super Bowl 2013: Superdome control room on video moment power went out
What Caused the Superdome's Super Bowl Blackout?
Roger Goodell denies Beyoncé's show caused Superdome power outage, Super Bowl XLVII
Lights-out Super Bowl gets redefined – The Denver Post