The list “outages@outages.org” has good and frequent reporting of service outages affecting telecom carriers, internet service providers, and the like. Here’s one recent account.
"During annual systems inspections an emergency power off (EPO) switch was inadvertently triggered.
This switch, when triggered, shut down power to bus duct F. (EPOs are designed to shut down all power, including utility and generator power, and, as a result, all power to bus duct F was shut down.) The de-energizing of this bus duct removed power from multiple pieces of mechanical and electrical equipment, including a chiller and UPS2. Customers supported by UPS2 experienced a 14 minute outage, after the UPS depleted its batteries (which provided 11 minutes and 57 seconds of run time). Additionally, some customers saw higher temperatures in the data center. All power has been restored and all temperatures have returned to normal. "
https://puck.nether.net/pipermail/outages/2014-January/006546.html