On the anniversary of a 1977 blackout that hit most of New York City, a massive power outage brought the curtain down on Broadway shows and stalled traffic on Manhattan streets. Underground, the power outage affecting 73,000 customers for hours also left the subway system in disarray.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/thousands-left-in-the-dark-during-nyc-power-outage