County annual report · FIPS 37037
2018 Chatham County, NC Power Outage Report
In 2018, customers in Chatham County, NC went without power for an average of 341.3 hours, a total of 1.3M customer-hours (North Carolina average 55.2 hours). That ranks 7th worst of 94 North Carolina counties and 12th of 2,798 nationally.
Compared with NC, the US and 2017
Coverage line is EAGLE-I's share of North Carolina customers tracked each year.
Biggest outages in Chatham County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 11, 2018 13:45 | October 16, 2018 03:45 | 4d 14h | 17,228 | 678K |
| 2 | December 28, 2018 09:00 | December 28, 2018 10:30 | 1h 30m | 15,111 | 9,825 |
| 3 | September 14, 2018 00:30 | September 14, 2018 21:45 | 21h 15m | 9,895 | 54K |
| 4 | December 9, 2018 09:30 | December 11, 2018 05:00 | 1d 19h | 7,952 | 101K |
| 5 | January 17, 2018 16:15 | January 20, 2018 03:30 | 2d 11h | 6,314 | 110K |
| 6 | August 8, 2018 21:45 | August 9, 2018 20:45 | 23h | 6,137 | 28K |
| 7 | September 15, 2018 04:00 | September 24, 2018 12:45 | 9d 8h | 4,647 | 143K |
| 8 | December 19, 2018 16:30 | December 19, 2018 21:45 | 5h 15m | 3,958 | 2,991 |
| 9 | October 1, 2018 02:30 | October 1, 2018 04:45 | 2h 15m | 3,941 | 6,750 |
| 10 | June 2, 2018 20:30 | June 3, 2018 06:45 | 10h 15m | 2,360 | 7,862 |
Outage episodes by size in 2018: 111 reached 100+ customers, 25 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 Chatham County reported on EIA Form 861 for 2018, 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 |
|---|---|---|---|---|---|
| Duke Energy Progress - (NC) | 2018 | 43.0 hrs | 2.71 | 2.6 hrs | 1.33 |
| Duke Energy Carolinas, LLC | 2018 | 13.1 hrs | 1.81 | 3.7 hrs | 1.19 |
| Piedmont Electric Member Corp | 2018 | 30.8 hrs | 2.81 | 2.5 hrs | 1.26 |
| Central Electric Membership Corp. - (NC) | 2018 | 22.4 hrs | - | 5.6 hrs | - |
| Randolph Electric Member Corp | 2018 | 15.9 hrs | 4.10 | 2.2 hrs | 1.50 |
| Duke Energy | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 82% of North Carolina's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,797 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. Chatham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chatham County, NC annual power outage report, 2018, 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/2018/north-carolina/chatham-county