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Coronado — Power plant · Coal · Salt River Project
  • Combustion
  • Operating
  • 10 · 100 · 1,000 MW

Coronado

Power plant · Coal

Key facts

Power plant · Coalran 41% of 2025 Retiring
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1979
Net generation, 2025
2,933,440 MWh
Grid
500 kV to Salt River Project (SRP)
Location
Apache County, Arizona

Output

Net generation MWh by year, 2001 to 2026
Fuel burned MMBtu by year, 2001 to 2026
  • Coal
  • Oil

Operations detail

Details

Who’s behind it

Owner
Salt River Project Agricultural Improvement & Power District

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Technology
Coal source: “Conventional Steam Coal”
Age
47 years since 1979
Heat rate
11,276 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
Gem
Parents
Name
Salt River Project
Share pct
100
Gem entity id
E100000001291
Unit ids
G100000101706, G100000101707
Location id
L100000103789
EPA greenhouse gas reporting (GHGRP)
EPA FRS ID
110071160859
Subparts reported
C, D, HH
NAICS code
221112
Subpart PP (CO2 supply)
No
Subpart RR (geologic sequestration)
No
Subpart UU (CO2 injection)
No
Reporting year
2023
GHGRP facility ID
1007103
Fuel burned (MMBtu), 202533,076,352
Capacity factor, 20250.407
Heat rate (Btu/kWh), 202511,275.6
Net generation (MWh), 20252,933,440.0
Balancing authority codeSRP

Retirement

EIA-860M September 2026StatusAt least half of the plant's in-service nameplate capacity is scheduled to retire, on dates its owner has reported to EIA. As of EIA-860M for September 2026.
Next scheduled retirement
December 2032
Capacity scheduled to retire
821.8 MW
Generators scheduled to retire
2
Share of in-service capacity scheduled
100%
Capacity still in service
821.8 MW
GeneratorTechnologyNameplateStateDate
CO1Conventional Steam Coal410.9 MWScheduled to retireDecember 2032
CO2Conventional Steam Coal410.9 MWScheduled to retireDecember 2032

Grid

EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).
Grid voltage at the plant
500 kV
Transmission or distribution system owner
Salt River Project
Balancing authority
Salt River Project
NERC region
WECC
Transmission lines within 25 km (2)
Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

2 companies2
CompanyRoleShareAs ofSource
Salt River Project Operator EIA-860M
SALT RIVER PROJECT AGRICULTURAL IMPROVEMENT & POWER DISTRICT Owner 100.0% 31 Dec 2023 EPA GHGRP

Timeline

  • Stated Units CO1, CO2 scheduled to retire, 821.8 MW · EIA-860M
  • In service · EIA-860M

Sources

6 sources

Sources EIA-860M · GEM · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)

Sources

Every source and license · Attribution

View at source