ChollaRetired
Navajo County, Arizona · EIA plant ID 113 · Operator: Arizona Public Service Co
×840 MW coal retired since 2020 (latest Mar 2025)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 7,151.7 | 82.0% | 10,824 |
| 2002 | 6,157.2 | 70.6% | 10,783 |
| 2003 | 6,379 | 73.2% | 10,787 |
| 2004 | 6,769.1 | 77.5% | 10,924 |
| 2005 | 7,577.6 | 84.7% | 10,835 |
| 2006 | 7,529.1 | 84.2% | 10,583 |
| 2007 | 7,940.4 | 88.8% | 10,525 |
| 2008 | 7,403.6 | 82.5% | 10,452 |
| 2009 | 7,236.1 | 80.9% | 10,348 |
| 2010 | 7,121.8 | 79.2% | 10,406 |
| 2011 | 7,307 | 81.2% | 10,506 |
| 2012 | 6,984.9 | 77.4% | 10,608 |
| 2013 | 6,606.6 | 73.4% | 10,659 |
| 2014 | 6,630.1 | 73.7% | 10,731 |
| 2015 | 5,522.9 | 82.2% | 10,778 |
| 2016 | 2,432.2 | 36.1% | 11,058 |
| 2017 | 3,618.2 | 53.8% | 10,963 |
| 2018 | 3,615 | 53.8% | 10,964 |
| 2019 | 2,782.8 | 41.4% | 11,112 |
| 2020 | 3,150 | 48.8% | 11,117 |
| 2021 | 1,926.5 | 56.8% | 10,018 |
| 2022 | 2,316.5 | 68.3% | 10,797 |
| 2023 | 1,787.7 | 53.3% | 10,661 |
| 2024 | 1,320.8 | 39.6% | 10,580 |
| 2025 | 391.8 | 72.2% | 12,128 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | ST | 113.6 | 112 | May 1962 | Retired Mar 2025 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 288.9 | 260 | Jun 1978 | Retired Nov 2015 | — | coming soon |
| 3 | Conventional Steam Coal | ST | 312.3 | 271 | May 1980 | Retired Mar 2025 | — | coming soon |
| 4 | Conventional Steam Coal | ST | 414 | 380 | Jun 1981 | Retired Dec 2020 | — | coming soon |
Owner / operator
Operator: Arizona Public Service Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Snowflake A Solar and BESS | — | 17.5 km |
| West Camp Wind Farm | 500 MW | 25.2 km |
| Dry Lake Wind LLC | 63 MW | 31.2 km |
| Poseidon Wind, LLC | 65 MW | 38.9 km |
| Hashknife Energy Center LLC | — | 44.2 km |
| Hashknife Energy Center II LLC | — | 44.2 km |