States › Maryland › Charles County
Electric utilities serving Charles County, Maryland
Utilities that list the county in their Form EIA-861 service territory for 2024, with each one's average price, bill and outage minutes.
Charles County, Maryland, appears in the Form EIA-861 service territory of 1 utility for 2024: Southern Maryland Elec Coop Inc.
Its average residential price was 14.84¢ per kilowatthour, against a Maryland average of 17.86¢ and a US average of 16.48¢. Each price is the utility's figure for all of its Maryland customers, not for this county alone.
The median SAIDI they reported was 146.0 minutes per customer including major event days; the median among all Maryland utilities reporting was 106.3.
The Census Bureau estimates the county's population at 176,593. EIA does not publish customers by county, so which utility serves a given address has to be confirmed with the utility or the state utility commission.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Figures are for each utility's whole Maryland operation; EIA publishes nothing at county level.
Utilities and their 2024 figures
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Southern Maryland Elec Coop Inc | Cooperative | 160,882 | 14.84¢ | $170.08 | 146.0 | 113.9 |
Ordered by residential customers in Maryland. Short-form filers are small utilities that report only totals to EIA, so no residential price is available. A utility with no customers shown reported its retail sales elsewhere or delivers power that other companies bill for.
Against the state and the country
| Measure, 2024 | Utilities listing Charles County | Maryland | United States |
|---|---|---|---|
| Average residential price per kWh | 14.84¢ median | 17.86¢ | 16.48¢ |
| Average monthly residential bill | $170.08 median | $165.87 | $142.26 |
| SAIDI, all events (minutes) | 146.0 median | 106.3 median | 184.5 median |
| SAIDI, without major event days | 113.9 median | 61.4 median | 99.8 median |
| Utilities counted | 1 | 64 | 1,413 |
Outage minutes reported
SAIDI for 2024 across each utility's whole system, including major event days (paler bars: only the figure without major event days was reported). Not a measure of outages in Charles County itself.
Population: 176,593 (U.S. Census Bureau, Vintage 2025 estimate). Statewide, residential sales came to 4,362 kWh per resident in 2024.
Other Maryland counties
- Baltimore County 1
- Baltimore city 1
- Calvert County 2
- Caroline County 2
- Carroll County 2
- Cecil County 2
- Dorchester County 2
- Frederick County 2
- Garrett County 1
- Harford County 2
- Howard County 2
- Kent County 2
All 24 counties and every Maryland utility
Questions and answers
Who provides electricity in Charles County?
Southern Maryland Elec Coop Inc list the county in their Form EIA-861 service territory for 2024. Territories overlap, and a utility may cover only a corner of the county.
What is the electricity price in Charles County?
EIA has no county-level prices. The utilities serving the county reported average residential prices of 14.84¢ per kilowatthour across their Maryland customers in 2024; the state average was 17.86¢.
How reliable is power in Charles County?
Reliability is reported per utility, not per county. The utilities listed reported a median of 146.0 minutes of interruption per customer in 2024 including major event days and 113.9 minutes excluding them.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory file (counties by utility), sales to ultimate customers, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau. Public domain. To confirm the utility at an address, ask the utility or the state utility commission.