County annual report · FIPS 08005
2024 Arapahoe County, CO Power Outage Report
In 2024, customers in Arapahoe County, CO went without power for an average of 3.5 hours, a total of 1.1M customer-hours (Colorado average 4.7 hours). That ranks 27th worst of 52 Colorado counties and 1963rd of 2,990 nationally.
Compared with CO, the US and 2023
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Arapahoe County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 14, 2024 01:45 | March 18, 2024 07:15 | 4d 5h | 22,443 | 149K |
| 2 | April 4, 2024 14:30 | April 10, 2024 12:45 | 5d 22h | 13,308 | 302K |
| 3 | August 13, 2024 14:30 | August 15, 2024 05:00 | 1d 14h | 11,632 | 18K |
| 4 | October 16, 2024 13:15 | October 17, 2024 03:00 | 13h 45m | 10,863 | 3,813 |
| 5 | June 12, 2024 13:45 | June 14, 2024 01:45 | 1d 12h | 6,680 | 17K |
| 6 | February 4, 2024 13:45 | February 5, 2024 00:30 | 10h 45m | 6,618 | 11K |
| 7 | April 29, 2024 14:30 | April 30, 2024 08:00 | 17h 30m | 5,499 | 11K |
| 8 | September 13, 2024 11:30 | September 14, 2024 08:45 | 21h 15m | 5,468 | 8,219 |
| 9 | May 12, 2024 23:30 | May 13, 2024 01:45 | 2h 15m | 5,433 | 2,808 |
| 10 | November 8, 2024 21:45 | November 12, 2024 07:00 | 3d 9h | 5,168 | 101K |
Outage episodes by size in 2024: 240 reached 100+ customers, 91 reached 1,000+ customers, 4 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 2024, 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 | 2024 | 5.9 hrs | 1.68 | 2.6 hrs | 1.36 |
| CORE Electric Cooperative | 2024 | 3.5 hrs | 0.93 | 74 min | 0.75 |
| Mountain View Elec Assn, Inc | 2024 | 56 min | 0.49 | 42 min | 0.46 |
| 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 2024; 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, 2024, 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/2024/colorado/arapahoe-county