County annual report · FIPS 08005
2019 Arapahoe County, CO Power Outage Report
In 2019, customers in Arapahoe County, CO went without power for an average of 3.4 hours, a total of 1.1M customer-hours (Colorado average 3.3 hours). That ranks 22nd worst of 55 Colorado counties and 1493rd of 2,945 nationally.
Compared with CO, the US and 2018
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Arapahoe County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 8, 2019 09:00 | February 16, 2019 23:15 | 8d 14h | 124,233 | 69K |
| 2 | April 6, 2019 07:45 | April 6, 2019 12:00 | 4h 15m | 20,510 | 19K |
| 3 | March 13, 2019 12:30 | March 19, 2019 02:45 | 5d 14h | 19,100 | 552K |
| 4 | October 9, 2019 02:00 | October 11, 2019 08:30 | 2d 6h | 11,159 | 6,758 |
| 5 | September 21, 2019 12:15 | September 21, 2019 21:15 | 9h | 10,569 | 19K |
| 6 | June 18, 2019 11:30 | July 8, 2019 02:15 | 19d 14h | 5,831 | 32K |
| 7 | October 22, 2019 14:45 | October 23, 2019 16:45 | 1d 2h | 5,290 | 12K |
| 8 | July 10, 2019 17:45 | July 15, 2019 02:15 | 4d 8h | 3,553 | 14K |
| 9 | May 5, 2019 15:00 | May 5, 2019 19:15 | 4h 15m | 3,479 | 5,223 |
| 10 | October 1, 2019 14:30 | October 2, 2019 04:45 | 14h 15m | 3,279 | 4,392 |
Outage episodes by size in 2019: 164 reached 100+ customers, 51 reached 1,000+ customers, 5 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 Arapahoe County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| Public Service Co of Colorado | 2018 | 1.9 hrs | 1.02 | 1.6 hrs | 0.98 |
| CORE Electric Cooperative | 2018 | 89 min | 0.66 | 76 min | 0.59 |
| Mountain View Elec Assn, Inc | 2018 | 50 min | 0.58 | 50 min | 0.58 |
| Morgan County Rural Elec Assn | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Colorado's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 323,113 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. Arapahoe County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Arapahoe County, CO annual power outage report, 2019, 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/2019/colorado/arapahoe-county