10 years after blackout, US grid faces new threats

Updated
10 years after blackout, US grid faces new threats
A Con Edison crew works on restoring power in Manhattan, Friday, August 15, 2003 after a massive power blackout in the Northeastern US. (AP Photo/J. David Ake) (AP Photo/J. David Ake)

The U.S. electrical grid is better managed and more flexible a decade after its largest blackout but remains vulnerable to increasingly extreme weather, cybersecurity threats, and stress caused by shifts in where and how power is produced. The following is a slide presentation for the 10-year anniversary of a massive power failure caused the largest power outage in the nation's history, affecting 50 million people in parts of seven states and Canada. (AP)