Sporting events affected by the outage included the Mets-Giants game at New York's Shea Stadium. Closer to the Packers' travel destination, the Toledo Mudhens vs. Norfolk Tides baseball game was cancelled as well.
While team meetings had to be postponed Thursday night, the rest of the Packers stay was business as usual. Players met in the lobby and enjoyed a little bit of extra free time.
Once the lights come back up, the focus will shift back to the game and the preseason matters at hand.
Here are a few areas to watch -- once Cleveland is out of the dark, that is:
1. Both teams have a QB battle brewing: In Cleveland, the focus is on the competition between Tim Couch and Kelly Holcomb for the top spot. For Green Bay, the time to decide exactly how the backup quarterbacks stack up is drawing near. Look for Akili Smith to get a long look due to Craig Nall's hyper-extended knee.
2. All eyes on the new guys: Cleveland completed signing its draft class Wednesday when fourth-round pick Lee Suggs agreed to terms on a five-year deal. Green Bay's newest tight end Wesley Walls will get another chance to ease in, and Gilbert Brown's possible in-house replacements will get put to the test.
3. Calling all offense: Both teams are coming off games which left as many questions as they answered. Cleveland is coming off an offense-less 10-6 loss to Tennessee. Meanwhile, the Packer reserves had to make up for the starters' lack of point production in a come-from-behind win last week in Atlanta.