PEPCO Contact Information September 19, 2017 by Matt Sullivan PEPCO Customer Service Numbers: Contact Customer Care by phone Available 7 a.m. – 8 p.m. Monday through Friday 202-833-7500 Report outages by phone 1-877-PEPCO-62 (1-877-737-2662) PEPCO Website Contact Page Share this:FacebookTwitterInstagramLinkedInPinterestTumblrPrint