Alert and Notification

Within 15 minutes after classifying an incident, Millstone must notify designated state and local government officials within the Emergency Planning Zone (EPZ), via the use of the Dominion Energy Emergency Notification System (DEENS). 

At the onset of an emergency at Millstone, and every time a public protective action has been implemented, public alerts will be sent throughout the EPZ communities. This is to alert residents to turn to an Emergency Alert System (EAS) radio or television station for more information. EAS messages would be broadcast from the State Office of Emergency Management’s Emergency Operations Center (EOC).

In the unlikely event of an actual emergency at Millstone, the Joint Media Center would be activated. This joint state and utility media center is staffed by the Governor’s Press Secretary, Connecticut’s Emergency Response Communications Team and liaisons from Millstone. Press releases, media briefings and press conferences are coordinated through the joint media center. The Governor’s Press Secretary oversees the coordination and release of emergency public information from State agencies, local governments and Millstone. The Joint Media Center provides specific instructions and supplemental information to enhance the Emergency Alert System (EAS) messages broadcast.

Starting October 1, 2026, you'll receive emergency alerts on your mobile phone. These alerts work like AMBER or severe weather alerts. Millstone Nuclear Power Station is in the process of decommissioning the traditional sirens and moving to digital alert and notifications.