County annual report · FIPS 24031
2022 Montgomery County, MD Power Outage Report
In 2022, customers in Montgomery County, MD went without power for an average of 4.2 hours, a total of 1.7M customer-hours (Maryland average 5.5 hours). That ranks 13th worst of 24 Maryland counties and 1602nd of 2,976 nationally.
Compared with MD, the US and 2021
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Montgomery County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 27, 2022 22:45 | November 30, 2022 00:45 | 2d 2h | 120,582 | 546K |
| 2 | July 2, 2022 23:30 | July 6, 2022 01:15 | 3d 1h | 27,552 | 188K |
| 3 | June 4, 2022 09:45 | June 4, 2022 16:45 | 7h | 19,620 | 4,958 |
| 4 | December 22, 2022 13:45 | December 29, 2022 01:45 | 6d 12h | 19,429 | 201K |
| 5 | July 12, 2022 12:15 | July 17, 2022 21:45 | 5d 9h | 16,882 | 133K |
| 6 | May 30, 2022 13:15 | May 30, 2022 17:15 | 4h | 13,692 | 6,972 |
| 7 | June 2, 2022 09:45 | June 4, 2022 07:00 | 1d 21h | 11,805 | 47K |
| 8 | May 24, 2022 10:45 | May 25, 2022 06:15 | 19h 30m | 10,885 | 15K |
| 9 | July 23, 2022 20:00 | July 25, 2022 08:00 | 1d 12h | 6,709 | 33K |
| 10 | July 6, 2022 04:15 | July 10, 2022 09:15 | 4d 5h | 6,316 | 16K |
Outage episodes by size in 2022: 188 reached 100+ customers, 60 reached 1,000+ customers, 8 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 2022, 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 | 2022 | 8.1 hrs | 1.58 | 3.2 hrs | 1.19 |
| Baltimore Gas & Electric Co | 2022 | 5.1 hrs | 1.16 | 83 min | 0.82 |
| Potomac Electric Power Co | 2022 | 1.5 hrs | 0.65 | 41 min | 0.47 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2022; 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, 2022, 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/2022/maryland/montgomery-county