Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales · How we got these numbers · Report an error
Potomac Electric Power Co electricity: 603,429 accounts in Maryland, SAIDI 46 min in 2024
Roughly 603,429 Maryland accounts belong to Potomac Electric Power Co, classed by EIA as investor owned; the residential count is 553,607. Its home price moved +54.1% from 2015 to 2024, 24.9 points faster than Maryland.
Chalk Point Generating Station. Photo by Cyndy Sims Parr, CC BY-SA 2.0, Wikimedia Commons. Illustrative, not a listed utility's plant.
At 828 kWh a month a Potomac Electric Power Co home pays about $155 in energy: 18.74 ¢/kWh, 4.9% above the Maryland average of 17.86 ¢.
Its home price moved +54.1% from 2015 to 2024, 24.9 points faster than Maryland.
Potomac Electric Power Co: price path since 2015
Home price since 2015
+54.1%Maryland +29.2%, a gap of +24.9 points
The record that sets Potomac Electric Power Co apart is the path of its home price: 12.16 ¢ in 2015, 18.73 ¢ in 2024. That is +54.1%, while the Maryland average went +29.2%, so this utility climbed faster by 24.9 points.
Among Maryland utilities with 20,000+ homes it stood 3rd cheapest of 5 in 2015 and is 5th of 5 in 2024, so it fell down the list.
How it compares
Potomac Electric Power Co
Potomac Electric Power Co, 2024
Home
Business
Bill
SAIDI
Potomac Electric Power Co
18.74 ¢/kWh
7.29 ¢/kWh
$155at 828 kWh
46 minSAIDI
Maryland average against this company, which is 5 of 5 on price
-0.88 ¢/kWhcompany 4.9% above
+5.67 ¢/kWhcompany 43.7% below
-$7a month at 828 kWh
+44 mincompany 44 below
Choptank Electric Cooperative, IncLowest in this table
No 2025 early-release row for Potomac Electric Power Co; 2024 stays the latest year.
Potomac Electric Power Co 2024 against Maryland 2025
-0.79 ¢18.74 ¢ for Potomac Electric Power Co in 2024, 19.53 ¢ for Maryland in 2025
No 2025 line exists yet for Potomac Electric Power Co, so 18.74 ¢/kWh and a SAIDI of 46 minutes (2024, 553,607 homes) are the latest figures.
Carbon context
Potomac Electric Power Co serves 553,607 homes in Maryland. At 828 kWh a month that is about 195 kg of CO₂, or 2,344 kg a year, at the Maryland plant rate, state generation and not this utility: Maryland generation mix.
Potomac Electric Power Co charts
Residential price since 2015: 18.74 ¢ in 2024
12.16 ¢ in 2015, 18.74 ¢ in 2024 (+54.1%); Maryland 13.82 to 17.86 ¢.
Potomac Electric Power Co residential price 2015-2024, 2015 to 2024: 10 rows
Potomac Electric Power Co billed homes 12.16 ¢/kWh in 2015 and 18.73 ¢ in 2024, +54.1% in all, and outpaced the Maryland average (+29.2%) by 24.9 points. Full-service customers alone pay 20.08 ¢ per EIA, against 18.73 ¢ for all rows: buyers of energy elsewhere pay Potomac Electric Power Co for delivery only. Potomac Electric Power Co's sharpest move came in 2023, +19.7%. The latest year is the high at 18.73 ¢; the low was 12.16 ¢ (2015). 2024: +10.7% here, +7.6% for the Maryland average. SAIDI at Potomac Electric Power Co (major events excluded) fell from 113 minutes in 2015 to 46 in 2024, -59%; best year 2023 at 45. Potomac Electric Power Co filed SAIDI under the national median in 8 of 10 years; its 2024 figure was 46 minutes, -53 from that year's median. 2018: 189 minutes with major events, 62 without, the widest gap of any year.
A 4.9% premium to Maryland, partly matched by a 46-minute outage figure that beats the national median.
Home accounts at Potomac Electric Power Co went from 496,347 in 2015 to 553,607 in 2024, +11.5%. Business customers paid 0.39 times the home price in 2024 (7.29 against 18.73 ¢); the ratio was 0.45 in 2015. SAIFI went from 1.09 in 2015 to 0.51 in 2024, between 0.51 and 1.09.
Outages and home price of Potomac Electric Power Co (EIA utility 15270), 2013 to 2024
Potomac Electric Power Co customers lost power for 46 minutes in 2024, down from 136 in 2013 (−66%). Its best year was 2023 (45 min), its worst 2013 (136 min), across 12 filed years. Against a Maryland median of 67 minutes in 2024, Potomac Electric Power Co was below the middle.
Corrected for inflation, a Potomac Electric Power Co home paid 19.23 ¢/kWh in 2024 against 15.67 ¢ in 2013, +22.7%; the bill itself went 11.34 ¢ to 18.73 ¢ (+65.3%). A home using 1,000 kWh a month paid $1,880 for the year at the 2013 real price and $2,307 at the 2024 price. Place on home price: 6th cheapest of 9 in 2013, 10th of 11 in 2024 among Maryland utilities with 1,000+ homes.
Potomac Electric Power Co outage minutes a customer, 2013 to 2024: 46 in 2024
Potomac Electric Power Co at 46 min in 2024 and the Maryland median at 67.
Potomac Electric Power Co home price since 2013: +22.7% after inflation
Potomac Electric Power Co: 19.23 ¢ in 2025 dollars (solid) and 18.73 ¢ as billed (dashed) in 2024.
Potomac Electric Power Co, EIA utility 15270, year by year among Maryland utilities
Potomac Electric Power Co 2013-2024: 12 rows
Year, Potomac Electric Power Co
¢ billed
¢ in 2025 $
Price place, Potomac Electric Power Co
SAIDI min
SAIFI
SAIDI place, Potomac Electric Power Co
Maryland median SAIDI
2013
11.34
15.67
6 of 9
136
1.43
3 of 4
117
2014
11.74
15.96
7 of 10
99
1.19
2 of 5
120
2015
12.16
16.51
7 of 10
113
1.09
5 of 5
109
2016
12.73
17.08
8 of 11
105
1.06
3 of 5
105
2017
12.93
16.98
8 of 11
67
0.77
1 of 5
93
2018
13.09
16.79
7 of 11
62
0.81
1 of 5
101
2019
13.20
16.62
9 of 14
60
0.74
1 of 6
105
2020
13.26
16.50
7 of 12
52
0.63
1 of 5
78
2021
12.79
15.20
6 of 11
56
0.58
1 of 6
88
2022
14.13
15.54
7 of 11
55
0.67
1 of 6
99
2023
16.92
17.88
9 of 11
45
0.51
2 of 7
60
2024
18.73
19.23
10 of 11
46
0.51
2 of 7
67
Potomac Electric Power Co, EIA utility 15270: EIA-861, CPI-U.
What kind of utility is Potomac Electric Power Co?
Potomac Electric Power Co files with EIA as an investor-owned utility. In Maryland, investor-owned utilities serve 90% of residential customers at an average 18.0 cents per kWh. Potomac Electric Power Co itself averaged 20.1 cents, 2.1 cents above its type in Maryland.
Shutoffs: this utility reported 15,623 disconnections for nonpayment in 2024, 4.9 per 100 accounts (District of Columbia: 4.9; EIA Form EIA-112). All utilities.
Reliability and meters, 2024
In 2024 the average Potomac Electric Power Co customer was without power 46 minutes without major events and 65 with them. That is 2nd fewest of 7 Maryland utilities with 10,000+ customers. The median Maryland utility reported 67 minutes. Smart (AMI) meters: 100% of its 556,425 residential meters.
How big is Potomac Electric Power Co in Maryland, by customer accounts?
603,429 accounts in 2024: residential 553,607, commercial 49,811, industrial 9.
How many cents per kWh does Potomac Electric Power Co charge homes?
In 2024 homes paid 18.74 cents; against the Maryland average that is +4.9%.
What are the SAIDI and SAIFI of Potomac Electric Power Co?
SAIDI 46.4 min and SAIFI 0.51 a year, major events excluded; ratio to the national median 0.47, CAIDI 91 min.
How many net-metered systems connect to Potomac Electric Power Co?
42,918 installations with 368.1 MW, of which residential installations number 41,951.
What would a typical Potomac Electric Power Co home pay each month?
828 kWh at 18.74 cents comes to about $155, energy only.
Is Potomac Electric Power Co cheaper than other Maryland utilities?
Rank 5 of 5 in Maryland on price, +4.9% against the state average; 4 charge less than 18.74 ¢.
How much of the Potomac Electric Power Co load is business?
Homes take 41.0% of 13,405,796 MWh, commercial accounts 55.0%, industrial and other 4.0%; the 49,811 commercial accounts use 147,915 kWh each, 14.9 times a home.
Does Potomac Electric Power Co have smart meters or TOU rates?
555,008 of 556,425 home meters are AMI, 99.7%. Potomac Electric Power Co reports no home time-of-use rate; 2 of 11 Maryland filers do.
Since 2015, has Potomac Electric Power Co become cheaper than other Maryland utilities?
3rd cheapest of 5 in 2015, 5th of 5 in 2024; its price rose 54.1% while Maryland rose 29.2%.
Where does Potomac Electric Power Co stand among 5 peers?
Place 5 of 6 on home price at 18.74 ¢ (Exelon group); median 16.24 ¢, cheapest member 13.39 ¢.
Has Potomac Electric Power Co filed 2025 data with EIA?
Potomac Electric Power Co has no early-release row; 2024 stands at 18.74 cents and 46 SAIDI minutes.
Utilities with a similar home price
Home prices nearest to Potomac Electric Power Co at 18.74 ¢/kWh in 2024, among companies with a page here, any state.
EIA-861 form instructions for Potomac Electric Power Co electricity: 603,429 accounts in Maryland, SAIDI 46 min in 2024, how a customer is counted
EIA state profiles for Potomac Electric Power Co electricity: 603,429 accounts in Maryland, SAIDI 46 min in 2024, the state price average
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At 828 kWh a month a Potomac Electric Power Co home pays about $155 in energy: 18.74 ¢/kWh, 4.9% above the Maryland average of 17.86 ¢.
Cite this page
Underlying data are U.S. government works (EIA, Census Bureau). Our tables and charts: CC BY 4.0, credit Electric Consumer. The access date fills in when you open this page.
APA
Electric Consumer. (2026). Potomac Electric Power Co price trend: 18.74 ¢/kWh in 2024, SAIDI 46 min. Data as of 26 October 2026. Retrieved 26 October 2026, from https://electricconsumer.org/companies/potomac-electric-power-co.html
MLA
Electric Consumer. “Potomac Electric Power Co price trend: 18.74 ¢/kWh in 2024, SAIDI 46 min.” Electric Consumer, data as of 26 October 2026, https://electricconsumer.org/companies/potomac-electric-power-co.html. Accessed 26 October 2026.
Chicago
Electric Consumer. “Potomac Electric Power Co price trend: 18.74 ¢/kWh in 2024, SAIDI 46 min.” Data as of 26 October 2026. Accessed 26 October 2026. https://electricconsumer.org/companies/potomac-electric-power-co.html.
BibTeX
@misc{usedata_companies_potomac_electric_power_co,
author = "Electric Consumer",
title = {Potomac Electric Power Co price trend: 18.74 ¢/kWh in 2024, SAIDI 46 min},
year = {2026},
url = {https://electricconsumer.org/companies/potomac-electric-power-co.html},
note = {Data as of 26 October 2026. Accessed 26 October 2026}
}
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