Updated Dec. 19, 2011 @ 10:31 p.m. ET
A second power outage halted the Steelers-49ers "Monday Night Football" game at Candlestick Park with 12:13 left in the second quarter and the Niners leading 6-0. Eventually the power came back on, and the game resumed following a 16-minute delay.
Steelers OLB James Harrison, who was suspended by the NFL for one game for an illegal hit and didn't travel with the team to San Francisco, tweeted, "If I cant play then can't nobody play... Lights out!"
Earlier, another power outage approximately 25 minutes before the scheduled start time delayed the kickoff by 20 minutes. A transformer outside the stadium reportedly exploded, leading to all the lights going off.
A spokesman for Pacific Gas & Electric said the company was still investigating the causes of the outages.
In the game, Steelers QB Ben Roethlisberger got the start despite having been questionable with a high ankle sprain, while WR Emmanuel Sanders is inactive. For the 49ers, neither LB Patrick Willis nor WR Braylon Edwards is active.