County annual report · FIPS 08005
2016 Arapahoe County, CO Power Outage Report
In 2016, customers in Arapahoe County, CO went without power for an average of 1.2 hours, a total of 398K customer-hours (Colorado average 1.7 hours). That ranks 19th worst of 40 Colorado counties and 1660th of 2,391 nationally.
Compared with CO, the US and 2015
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Arapahoe County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 13, 2016 15:15 | September 13, 2016 16:45 | 1h 30m | 24,676 | 6,170 |
| 2 | March 22, 2016 12:45 | March 28, 2016 18:30 | 6d 5h | 21,131 | 153K |
| 3 | July 19, 2016 21:45 | July 20, 2016 15:45 | 18h | 5,650 | 3,907 |
| 4 | April 20, 2016 01:30 | April 20, 2016 04:00 | 2h 30m | 5,388 | 6,708 |
| 5 | June 20, 2016 02:30 | June 20, 2016 10:00 | 7h 30m | 5,361 | 16K |
| 6 | February 17, 2016 19:45 | February 18, 2016 18:45 | 23h | 4,846 | 4,790 |
| 7 | September 2, 2016 03:30 | September 2, 2016 14:30 | 11h | 4,468 | 5,266 |
| 8 | May 17, 2016 02:00 | May 17, 2016 06:30 | 4h 30m | 4,150 | 6,447 |
| 9 | February 21, 2016 17:30 | February 22, 2016 05:45 | 12h 15m | 3,765 | 8,412 |
| 10 | April 29, 2016 23:15 | April 30, 2016 04:30 | 5h 15m | 3,617 | 2,736 |
Outage episodes by size in 2016: 149 reached 100+ customers, 49 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 Arapahoe County reported on EIA Form 861 for 2016, 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 | 2016 | 2.6 hrs | 1.23 | 86 min | 0.97 |
| CORE Electric Cooperative | 2016 | 2.7 hrs | 0.91 | 77 min | 0.79 |
| Mountain View Elec Assn, Inc | 2016 | 1.9 hrs | 0.99 | 67 min | 0.80 |
| 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 n/a of Colorado's customers in 2016; 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, 2016, 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/2016/colorado/arapahoe-county