County annual report · FIPS 47157
2017 Shelby County, TN Power Outage Report
In 2017, customers in Shelby County, TN went without power for an average of 29.7 hours, a total of 12.6M customer-hours (Tennessee average 5.6 hours). That ranks 2nd worst of 68 Tennessee counties and 176th of 2,786 nationally.
Compared with TN, the US and 2016
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Shelby County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 27, 2017 18:30 | June 2, 2017 07:45 | 5d 13h | 155,108 | 8.9M |
| 2 | June 2, 2017 11:15 | July 6, 2017 22:45 | 34d 11h | 24,614 | 1.5M |
| 3 | August 31, 2017 07:15 | September 6, 2017 05:00 | 5d 21h | 24,421 | 493K |
| 4 | April 29, 2017 12:00 | May 3, 2017 11:30 | 3d 23h | 19,205 | 387K |
| 5 | October 17, 2017 02:15 | October 18, 2017 03:45 | 1d 1h | 11,418 | 5,821 |
| 6 | April 16, 2017 11:45 | April 17, 2017 09:30 | 21h 45m | 11,380 | 4,095 |
| 7 | October 5, 2017 11:30 | October 13, 2017 05:45 | 7d 18h | 11,162 | 31K |
| 8 | January 5, 2017 14:00 | January 20, 2017 08:30 | 14d 18h | 10,348 | 105K |
| 9 | February 6, 2017 06:15 | February 8, 2017 02:30 | 1d 20h | 9,716 | 12K |
| 10 | December 16, 2017 12:45 | December 18, 2017 02:15 | 1d 13h | 9,688 | 19K |
Outage episodes by size in 2017: 214 reached 100+ customers, 118 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 Shelby County reported on EIA Form 861 for 2017, 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 |
|---|---|---|---|---|---|
| City of Memphis - (TN) | 2017 | 34.6 hrs | 2.17 | 2.7 hrs | 1.47 |
| Southwest Tennessee E M C | - | - | - | - | - |
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 Tennessee's customers in 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 422,904 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. Shelby County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Shelby County, TN annual power outage report, 2017, 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/2017/tennessee/shelby-county