Peach Bottom Emergency Siren Test Scheduled for June 4

Sirens to sound for three minutes at 1 p.m.

DELTA, PA (May 28, 2025) – Constellation will conduct its semi-annual, full-volume test of the emergency warning sirens surrounding Peach Bottom Clean Energy Center on Wednesday, June 4, at approximately 1 p.m. This is one of two semi-annual tests performed each year.

The warning siren system consists of 97 sirens located in the 10-mile radius around Peach Bottom. The sirens are not a signal to evacuate, but a warning to tune to a local Emergency Alert Broadcast television or radio station. County emergency management authorities
activate the sirens.

Peach Bottom Clean Energy Center is located on the bank of Conowingo Pond in York County, Pa. The plant produces enough carbon-free electricity to power the equivalent of more than 2 million homes.

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About Constellation

Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading energy supplier to businesses, homes and public sector customers nationwide, including three-fourths of Fortune 100 companies.

With annual output that is nearly 90% carbon-free, our hydro, wind and solar facilities paired with the nation’s largest nuclear fleet have the generating capacity to power the equivalent of 16 million homes, providing about 10% of the nation’s clean energy. We are committed to investing in innovative technologies to drive the transition to a reliable, sustainable and secure energy future. Follow Constellation on LinkedIn and X.

Contact: Mark Rodgers

Senior Communications Manager
Mark.Rodgers@Constellation.com

FOR IMMEDIATE RELEASE