County annual report · FIPS 24009
2015 Calvert County, MD Power Outage Report
In 2015, customers in Calvert County, MD went without power for an average of 2.0 hours, a total of 77K customer-hours (Maryland average 2.0 hours). That ranks 11th worst of 24 Maryland counties and 1250th of 2,484 nationally.
Compared with MD, the US
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Calvert County, 2015
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 24, 2015 00:00 | June 25, 2015 02:15 | 1d 2h | 5,860 | 11K |
| 2 | June 20, 2015 19:45 | June 21, 2015 00:30 | 4h 45m | 2,879 | 1,413 |
| 3 | September 29, 2015 21:30 | September 30, 2015 07:15 | 9h 45m | 1,977 | 558 |
| 4 | February 15, 2015 01:15 | February 16, 2015 02:15 | 1d 1h | 1,876 | 13K |
| 5 | February 6, 2015 11:15 | February 6, 2015 17:15 | 6h | 1,759 | 2,496 |
| 6 | November 21, 2015 01:30 | November 21, 2015 03:30 | 2h | 1,700 | 2,507 |
| 7 | June 2, 2015 00:45 | June 3, 2015 00:15 | 23h 30m | 1,536 | 2,370 |
| 8 | May 10, 2015 05:45 | May 10, 2015 14:00 | 8h 15m | 1,275 | 3,770 |
| 9 | April 12, 2015 11:15 | April 12, 2015 23:45 | 12h 30m | 1,081 | 2,438 |
| 10 | April 17, 2015 13:15 | April 17, 2015 19:00 | 5h 45m | 1,064 | 271 |
Outage episodes by size in 2015: 48 reached 100+ customers, 10 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 2015, 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 | 2015 | 1.7 hrs | 0.93 | 1.5 hrs | 0.89 |
| 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 n/a of Maryland's customers in 2015; 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, 2015, 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/2015/maryland/calvert-county