County annual report · FIPS 24031
2024 Montgomery County, MD Power Outage Report
In 2024, customers in Montgomery County, MD went without power for an average of 1.6 hours, a total of 622K customer-hours (Maryland average 2.8 hours). That ranks 22nd worst of 24 Maryland counties and 2542nd 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 Montgomery 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 | July 14, 2024 07:15 | July 18, 2024 00:45 | 3d 17h | 15,801 | 79K |
| 2 | November 26, 2024 11:15 | November 26, 2024 22:30 | 11h 15m | 11,339 | 11K |
| 3 | January 24, 2024 13:00 | January 25, 2024 04:00 | 15h | 11,160 | 9,600 |
| 4 | August 13, 2024 10:15 | September 13, 2024 09:00 | 30d 22h | 7,099 | 48K |
| 5 | April 8, 2024 12:45 | April 9, 2024 10:00 | 21h 15m | 6,750 | 1,827 |
| 6 | May 12, 2024 04:15 | May 14, 2024 08:00 | 2d 3h | 3,737 | 13K |
| 7 | February 9, 2024 13:00 | February 10, 2024 03:30 | 14h 30m | 3,622 | 1,094 |
| 8 | August 3, 2024 20:45 | August 11, 2024 00:45 | 7d 4h | 3,570 | 41K |
| 9 | June 5, 2024 11:15 | June 8, 2024 01:45 | 2d 14h | 3,342 | 9,584 |
| 10 | March 27, 2024 11:00 | March 27, 2024 21:00 | 10h | 3,244 | 2,581 |
Outage episodes by size in 2024: 182 reached 100+ customers, 47 reached 1,000+ customers, 3 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 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 |
|---|---|---|---|---|---|
| The Potomac Edison Company | 2024 | 3.7 hrs | 1.32 | 3.4 hrs | 1.28 |
| Baltimore Gas & Electric Co | 2024 | 2.2 hrs | 0.80 | 67 min | 0.63 |
| Potomac Electric Power Co | 2024 | 49 min | 0.43 | 36 min | 0.38 |
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 ÷ 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, 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/montgomery-county