County annual report · FIPS 24009
2024 Calvert County, MD Power Outage Report
In 2024, customers in Calvert County, MD went without power for an average of 3.4 hours, a total of 135K customer-hours (Maryland average 2.8 hours). That ranks 6th worst of 24 Maryland counties and 1990th of 2,990 nationally.
Compared with MD, the US and 2023
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Calvert County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 10, 2024 12:30 | May 10, 2024 19:45 | 7h 15m | 4,044 | 3,051 |
| 2 | January 9, 2024 19:45 | January 11, 2024 22:45 | 2d 3h | 2,883 | 26K |
| 3 | June 26, 2024 22:00 | June 28, 2024 11:00 | 1d 13h | 2,639 | 7,751 |
| 4 | February 29, 2024 02:30 | February 29, 2024 06:15 | 3h 45m | 2,468 | 1,895 |
| 5 | December 5, 2024 16:30 | December 6, 2024 06:00 | 13h 30m | 1,787 | 1,509 |
| 6 | July 24, 2024 17:15 | July 25, 2024 00:15 | 7h | 1,666 | 2,516 |
| 7 | March 29, 2024 21:15 | March 30, 2024 11:00 | 13h 45m | 1,657 | 6,078 |
| 8 | July 31, 2024 21:00 | August 1, 2024 11:45 | 14h 45m | 1,583 | 7,681 |
| 9 | November 21, 2024 03:00 | November 21, 2024 22:00 | 19h | 1,251 | 3,260 |
| 10 | July 17, 2024 21:15 | July 18, 2024 04:15 | 7h | 1,089 | 2,201 |
Outage episodes by size in 2024: 75 reached 100+ customers, 12 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 Calvert County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Baltimore Gas & Electric Co | 2024 | 2.2 hrs | 0.80 | 67 min | 0.63 |
| Southern Maryland Elec Coop Inc | 2024 | 2.4 hrs | 1.31 | 1.9 hrs | 1.13 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Maryland's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 39,458 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. Calvert County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calvert County, MD annual power outage report, 2024, 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/2024/maryland/calvert-county