In New Jersey, bills also have been introduced to require gas stations to run generators within 24 hours of a widespread power outage during a state of emergency.

WSJ: NY budget provides emergency backups for gas pumps

"While some further analysis remains, we believe we have identified and remedied the cause of the power outage and regret the interruption that occurred during what was a showcase event for the city and state, " Entergy New Orleans Chief Executive Charles Rice said.

WSJ: Super Bowl Outage Traced to Faulty Entergy Gear