Show on map
Ocotillo — Power plant · Gas, combustion turbine · Arizona Public Service Co
  • Combustion
  • Operating
  • 10 · 100 · 1,000 MW

Ocotillo

Power plant · Gas, combustion turbine

Key facts

Power plant · Gas, combustion turbineran 6% of 2025 Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1972
Net generation, 2025
443,322 MWh
Grid
69 kV to Arizona Public Service Co (AZPS)
Location
Maricopa County, Arizona
Net generation, 2025
443,322MWh
Fuel burned, 2025
4,207,521MMBtu
Capacity factor, 2025
6.3%
Heat rate, 2025
9,491Btu/kWh
Capacity factor % of full output, by year
Heat rate Btu per kWh, by year
YearNet generation (MWh)Fuel burned (MMBtu)Capacity factorHeat rate (Btu/kWh)
2026 (8 of 12 months)447,1824,202,738—9,398
2025443,3224,207,5216.3%9,491
2024539,8845,158,4217.6%9,555
2023640,8696,256,5429.1%9,763
2022772,5457,477,57810.9%9,679
2021668,4006,619,7249.5%9,904
2020740,9147,370,73910.5%9,948
2019618,6696,335,2918.8%10,240
2018270,7603,296,4783.8%12,175
2017220,0972,728,0383.1%12,395
2016136,6581,639,5611.9%11,998
2015107,2111,284,4221.5%11,980
201476,289945,2341.1%12,390
2013118,7051,501,3571.7%12,648
201274,684944,6631.1%12,649
201191,8781,088,1561.3%11,844
201055,777677,8490.8%12,153
200981,461967,4131.1%11,876
200869,258915,2041.0%13,214
2007178,3752,152,0062.5%12,064
2006146,0631,724,3682.1%11,806
2005153,9171,893,3792.2%12,301
2004259,1903,235,1203.7%12,482
2003 (10 of 12 months)186,5602,402,075—12,876
2002295,3743,962,3224.2%13,415
2001996,90012,886,10014.1%12,926
How these are worked out

Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.

Sources

3 sources

Sources EIA-860M · GEM · EIA

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026
  • GEMOpen license, with credit · retrieved Oct 26, 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
  • EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)

Every source and license · Attribution

View at source