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26.1 MW Distillate Oil operating in Cochise, AZ — Arizona Public Service Company
26.1 MW
Nameplate Capacity
1
Generators
unit
Petroleum Liquids
Technology
1972
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | — | — |
The Douglas plant is a 26.1 MW petroleum liquid-fueled power plant located in Cochise County, Arizona. The plant began operating in 1972 and has one generator. It is owned by Pinnacle West Capital and operated by Arizona Public Service Company (APS). Douglas operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, the plant generated 93 MWh, resulting in a capacity factor of 0.0%. The installed cost per kilowatt was $206.21, according to FERC data. Douglas is ranked as the 1st of 2 petroleum liquid plants in Arizona, and 155th of 886 such plants nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
7 MWh
Latest Month
93 MWh
Annual Generation
0.0%
Capacity Factor
CO₂ Intensity
2916 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
16 lb/MWh
SO₂
Internal combustion · Arizona Public Service Company · Data from 2015–2024
$214/kW
Installed Cost
$0/kW
Annual CapEx
$2409.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about DouglasArizona Public Service Company (AZPS)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
9 lb/MWh
CH₄
0.118 lb/MWh
N₂O
0.024 lb/MWh
Capacity Factor
0.0%
Annual Net Gen
0 GWh
CO₂eq
2926 lb/MWh
Subregion
WECC Southwest