County annual report · FIPS 24031
2016 Montgomery County, MD Power Outage Report
In 2016, customers in Montgomery County, MD went without power for an average of 2.1 hours, a total of 848K customer-hours (Maryland average 2.2 hours). That ranks 13th worst of 24 Maryland counties and 1285th of 2,391 nationally.
Compared with MD, the US and 2015
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Montgomery County, 2016
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 6, 2016 09:30 | June 7, 2016 03:00 | 17h 30m | 28,861 | 54K |
| 2 | June 21, 2016 11:15 | June 23, 2016 10:00 | 1d 22h | 10,308 | 52K |
| 3 | April 3, 2016 02:00 | April 9, 2016 18:30 | 6d 16h | 9,729 | 51K |
| 4 | August 13, 2016 14:00 | August 19, 2016 01:15 | 5d 11h | 9,511 | 96K |
| 5 | November 29, 2016 12:15 | December 2, 2016 09:15 | 2d 21h | 7,912 | 13K |
| 6 | October 9, 2016 05:15 | October 10, 2016 06:15 | 1d 1h | 7,870 | 12K |
| 7 | June 7, 2016 06:30 | June 8, 2016 06:15 | 23h 45m | 7,687 | 3,376 |
| 8 | November 21, 2016 14:00 | November 22, 2016 02:45 | 12h 45m | 7,463 | 2,231 |
| 9 | April 12, 2016 11:30 | April 13, 2016 10:45 | 23h 15m | 7,233 | 5,745 |
| 10 | January 10, 2016 03:30 | January 10, 2016 08:00 | 4h 30m | 6,050 | 9,167 |
Outage episodes by size in 2016: 207 reached 100+ customers, 89 reached 1,000+ customers, 2 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 Montgomery County reported on EIA Form 861 for 2016, 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 |
|---|---|---|---|---|---|
| The Potomac Edison Company | 2016 | 2.7 hrs | 1.17 | 2.2 hrs | 1.05 |
| Baltimore Gas & Electric Co | 2016 | 2.0 hrs | 1.06 | 1.7 hrs | 1.00 |
| Potomac Electric Power Co | 2016 | 1.8 hrs | 0.94 | 1.8 hrs | 0.94 |
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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 395,748 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. Montgomery County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montgomery County, MD annual power outage report, 2016, 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/2016/maryland/montgomery-county