County annual report · FIPS 17167
2018 Sangamon County, IL Power Outage Report
In 2018, customers in Sangamon County, IL went without power for an average of 0.4 hours, a total of 55K customer-hours (Illinois average 2.5 hours). That ranks 98th worst of 102 Illinois counties and 2556th of 2,798 nationally.
Compared with IL, the US and 2017
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Sangamon 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 | November 26, 2018 01:45 | November 26, 2018 18:45 | 17h | 3,138 | 9,898 |
| 2 | July 15, 2018 06:30 | July 15, 2018 08:00 | 1h 30m | 3,131 | 2,040 |
| 3 | June 12, 2018 07:30 | June 12, 2018 22:15 | 14h 45m | 3,001 | 2,439 |
| 4 | February 19, 2018 14:15 | February 19, 2018 17:30 | 3h 15m | 2,824 | 2,872 |
| 5 | May 27, 2018 20:00 | May 28, 2018 05:00 | 9h | 2,356 | 6,378 |
| 6 | September 6, 2018 05:00 | September 6, 2018 09:30 | 4h 30m | 1,618 | 831 |
| 7 | December 27, 2018 16:45 | December 28, 2018 03:00 | 10h 15m | 919 | 1,800 |
| 8 | July 24, 2018 23:30 | July 25, 2018 03:00 | 3h 30m | 911 | 1,078 |
| 9 | June 21, 2018 20:15 | June 22, 2018 06:00 | 9h 45m | 870 | 594 |
| 10 | May 11, 2018 15:15 | May 11, 2018 19:30 | 4h 15m | 866 | 896 |
Outage episodes by size in 2018: 42 reached 100+ customers, 6 reached 1,000+ customers, 0 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 Sangamon 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 |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2018 | 3.5 hrs | 1.06 | 1.8 hrs | 0.90 |
| Menard Electric Coop | 2018 | 2.9 hrs | 1.75 | 2.9 hrs | 1.75 |
| Rural Electric Conven Coop | 2018 | 4.0 hrs | 1.91 | 2.0 hrs | 1.84 |
| Ameren | - | - | - | - | - |
| Shelby Electric Coop, Inc | - | - | - | - | - |
| City of Springfield - (IL) | - | - | - | - | - |
| Village of Chatham - (IL) | - | - | - | - | - |
| Village of Riverton - (IL) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 92% of Illinois's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 138,475 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. Sangamon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sangamon County, IL 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/illinois/sangamon-county