County annual report · FIPS 18081
2021 Johnson County, IN Power Outage Report
In 2021, customers in Johnson County, IN went without power for an average of 2.0 hours, a total of 117K customer-hours (Indiana average 4.4 hours). That ranks 57th worst of 92 Indiana counties and 2210th of 2,974 nationally.
Compared with IN, the US and 2020
Coverage line is EAGLE-I's share of Indiana customers tracked each year.
Biggest outages in Johnson County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 11, 2021 05:45 | December 13, 2021 01:00 | 1d 19h | 4,342 | 25K |
| 2 | November 21, 2021 16:15 | November 21, 2021 20:00 | 3h 45m | 2,896 | 3,212 |
| 3 | March 26, 2021 04:45 | March 26, 2021 17:45 | 13h | 2,629 | 7,861 |
| 4 | April 9, 2021 22:45 | April 10, 2021 01:45 | 3h | 2,411 | 5,052 |
| 5 | April 29, 2021 20:30 | April 30, 2021 02:45 | 6h 15m | 1,952 | 6,148 |
| 6 | June 11, 2021 15:15 | June 11, 2021 19:15 | 4h | 1,464 | 1,829 |
| 7 | April 9, 2021 01:45 | April 9, 2021 05:15 | 3h 30m | 1,462 | 1,100 |
| 8 | February 3, 2021 23:45 | February 4, 2021 03:45 | 4h | 1,412 | 2,198 |
| 9 | May 21, 2021 23:45 | May 22, 2021 01:30 | 1h 45m | 1,407 | 2,457 |
| 10 | April 21, 2021 02:30 | April 21, 2021 17:45 | 15h 15m | 1,394 | 3,270 |
Outage episodes by size in 2021: 54 reached 100+ customers, 16 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 Johnson County reported on EIA Form 861 for 2021, 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 Indiana, LLC | 2021 | 3.4 hrs | 1.11 | 2.1 hrs | 0.94 |
| AES Indiana | 2021 | 2.9 hrs | 1.61 | 1.7 hrs | 1.31 |
| South Central Indiana REMC | 2021 | 11.0 hrs | 3.58 | 5.0 hrs | 2.52 |
| Johnson County Rural E M C | 2021 | 1.6 hrs | 1.32 | 35 min | 0.67 |
| Duke Energy | - | - | - | - | - |
| RushShelby Energy | - | - | - | - | - |
| Edinburgh Municipal Utilities | - | - | - | - | - |
| Town of Bargersville - (IN) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 86% of Indiana's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 57,420 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. Johnson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Johnson County, IN annual power outage report, 2021, 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/2021/indiana/johnson-county