The Potomac Edison Company

What This Utility Data Tells You

The Potomac Edison Company is an investor-owned utility operating in Maryland under EIA identifier 15263. It reports service to approximately 258,085 customer accounts and generated about $0.44 billion in annual electric revenue, with a service footprint spanning 125 ZIP codes. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.

In 2023, the average The Potomac Edison Company customer experienced 205.3 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That falls inside the typical 120–180 minute national benchmark, in line with what most U.S. distribution utilities report. The SAIFI figure, which tracks average outage events per customer, came in at 1.05 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 123.1 minutes, and the spread against the headline 205.3 indicates how much weather, versus routine infrastructure, drove the outage total.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for The Potomac Edison Company, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 133.8 to 205.3 minutes, which may reflect either worsening weather exposure or delayed grid modernization.