IOU · Maryland · EIA 15263
The Potomac Edison Company
IOU · Maryland · 258K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 205 minutes/customer.
Reliability verdict
The Potomac Edison Company shows near-benchmark chronic reliability in 2023: 123 minutes SAIDI excluding major events across 258K customers.
- 205 min
- SAIDI 2023
- 1.05
- SAIFI 2023
- 123 min
- SAIDI ex-MED
- 258K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack The Potomac Edison Company filings show
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.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
205 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for The Potomac Edison Company from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
The Potomac Edison Company SAIDI trend
The Potomac Edison Company vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
205 Around the middle fewer outage minutes than 42% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where The Potomac Edison Company sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, The Potomac Edison Company charges more per customer than 4% of them, and is more reliable (lower SAIDI) than 45% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $1,701/year · Latest SAIDI: 205.3 minutes/year.
SAIDI 2023 breakdown: 205.3 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 133.8 | 123.3 | 0.950 | 273,579 |
| 2021 | 178.7 | 130.9 | 1.067 | 277,615 |
| 2022 | 241.2 | 133.8 | 1.176 | 282,322 |
| 2023 | 205.3 | 123.1 | 1.049 | 284,025 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
The Potomac Edison Company serves 125 ZIP codes in Maryland.
Frequently Asked Questions
How reliable is The Potomac Edison Company?
The Potomac Edison Company had a SAIDI of 205.3 minutes in 2023. Leaving aside major weather events, that figure sits close to the national average.
What type of utility is The Potomac Edison Company?
The Potomac Edison Company is classified as a IOU serving Maryland.
How many customers does The Potomac Edison Company serve?
The Potomac Edison Company serves approximately 258,085 customers in Maryland.
How has The Potomac Edison Company's reliability changed over time?
The Potomac Edison Company has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- IOU
- State
- Maryland
- Customers
- 258,085
- Annual Revenue
- $0.44B
- EIA ID
- 15263
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for The Potomac Edison Company. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (258K here), outside Maryland.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (205.3 here), outside Maryland, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.