County annual report · FIPS 24017
2021 Charles County, MD Power Outage Report
In 2021, customers in Charles County, MD went without power for an average of 2.4 hours, a total of 178K customer-hours (Maryland average 2.5 hours). That ranks 13th worst of 24 Maryland counties and 2067th of 2,974 nationally.
Compared with MD, the US and 2020
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Charles County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 3, 2021 17:45 | June 4, 2021 06:30 | 12h 45m | 8,391 | 17K |
| 2 | August 13, 2021 19:45 | August 15, 2021 21:00 | 2d 1h | 7,169 | 8,096 |
| 3 | August 10, 2021 23:30 | August 11, 2021 00:00 | 30m | 5,186 | 1,710 |
| 4 | July 14, 2021 20:30 | July 15, 2021 21:15 | 1d | 4,353 | 16K |
| 5 | February 3, 2021 07:00 | February 3, 2021 07:45 | 45m | 3,504 | 2,628 |
| 6 | May 28, 2021 22:30 | May 29, 2021 20:15 | 21h 45m | 2,617 | 6,820 |
| 7 | November 14, 2021 22:15 | November 15, 2021 09:45 | 11h 30m | 2,538 | 4,494 |
| 8 | August 10, 2021 08:00 | August 10, 2021 09:00 | 1h | 2,290 | 1,837 |
| 9 | July 27, 2021 01:15 | July 27, 2021 20:45 | 19h 30m | 2,105 | 6,620 |
| 10 | August 19, 2021 12:30 | August 21, 2021 04:30 | 1d 16h | 1,995 | 4,691 |
Outage episodes by size in 2021: 110 reached 100+ customers, 18 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Charles County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Southern Maryland Elec Coop Inc | 2021 | 2.7 hrs | 1.56 | 2.0 hrs | 1.30 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 73,494 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Charles County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Charles County, MD annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/maryland/charles-county