County annual report · FIPS 24017
2018 Charles County, MD Power Outage Report
In 2018, customers in Charles County, MD went without power for an average of 7.0 hours, a total of 513K customer-hours (Maryland average 5.5 hours). That ranks 5th worst of 23 Maryland counties and 787th of 2,798 nationally.
Compared with MD, the US and 2017
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Charles County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 2, 2018 06:30 | March 6, 2018 01:00 | 3d 18h | 12,269 | 334K |
| 2 | May 23, 2018 09:15 | May 24, 2018 01:00 | 15h 45m | 5,553 | 1,534 |
| 3 | May 22, 2018 21:45 | May 23, 2018 01:45 | 4h | 3,628 | 974 |
| 4 | September 22, 2018 23:45 | September 23, 2018 05:15 | 5h 30m | 2,795 | 4,615 |
| 5 | July 21, 2018 14:45 | July 23, 2018 01:00 | 1d 10h | 2,671 | 7,549 |
| 6 | March 31, 2018 07:45 | March 31, 2018 18:00 | 10h 15m | 2,474 | 4,949 |
| 7 | July 16, 2018 10:45 | July 16, 2018 23:45 | 13h | 2,405 | 3,352 |
| 8 | August 2, 2018 19:30 | August 3, 2018 01:30 | 6h | 2,379 | 3,147 |
| 9 | June 20, 2018 03:15 | June 20, 2018 19:30 | 16h 15m | 1,854 | 2,468 |
| 10 | April 25, 2018 15:00 | April 25, 2018 20:15 | 5h 15m | 1,683 | 1,318 |
Outage episodes by size in 2018: 126 reached 100+ customers, 22 reached 1,000+ customers, 1 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 2018, 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 | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Maryland's customers in 2018; 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, 2018, 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/). https://massoutage.com/reports/2018/maryland/charles-county