County annual report · FIPS 24009
2019 Calvert County, MD Power Outage Report
In 2019, customers in Calvert County, MD went without power for an average of 1.8 hours, a total of 72K customer-hours (Maryland average 2.6 hours). That ranks 18th worst of 24 Maryland counties and 2124th of 2,945 nationally.
Compared with MD, the US and 2018
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Calvert County, 2019
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 29, 2019 18:15 | July 1, 2019 01:15 | 1d 7h | 1,971 | 5,824 |
| 2 | April 15, 2019 06:45 | April 15, 2019 23:15 | 16h 30m | 1,850 | 7,466 |
| 3 | October 8, 2019 22:30 | October 9, 2019 01:45 | 3h 15m | 1,426 | 1,662 |
| 4 | May 23, 2019 20:45 | May 24, 2019 05:15 | 8h 30m | 1,305 | 1,962 |
| 5 | November 24, 2019 05:30 | November 24, 2019 13:15 | 7h 45m | 1,270 | 3,149 |
| 6 | July 11, 2019 23:15 | July 12, 2019 14:45 | 15h 30m | 1,156 | 3,415 |
| 7 | June 13, 2019 21:30 | June 14, 2019 01:30 | 4h | 1,001 | 1,542 |
| 8 | August 6, 2019 12:45 | August 6, 2019 19:30 | 6h 45m | 978 | 1,976 |
| 9 | June 21, 2019 07:15 | June 22, 2019 00:15 | 17h | 886 | 1,447 |
| 10 | May 10, 2019 11:45 | May 10, 2019 23:45 | 12h | 882 | 479 |
Outage episodes by size in 2019: 50 reached 100+ customers, 7 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 2019, 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 | 2018 | 7.2 hrs | 1.32 | 1.6 hrs | 0.95 |
| 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 97% of Maryland's customers in 2019; 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, 2019, 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/2019/maryland/calvert-county