Potomac Electric Power Co

What This Utility Data Tells You

Potomac Electric Power Co is an investor-owned utility operating in District of Columbia under EIA identifier 15270. It reports service to approximately 504,871 customer accounts and generated about $1.06 billion in annual electric revenue, with a service footprint spanning 402 ZIP codes. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.

In 2023, the average Potomac Electric Power Co customer experienced 71.9 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. Over the same period, SAIFI (outage events per customer) was 0.37, putting the typical customer at roughly 0 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 33.3 minutes; the difference from the headline 71.9 shows how much of the outage total came from weather rather than everyday grid issues.

With 4 consecutive years of EIA data (2020–2023), Potomac Electric Power Co's reliability record can be judged on trend rather than one isolated year. SAIDI climbed from 44.0 to 71.9 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.