- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Springerville: location and 1 exact-grade project within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Springerville
Power plant · Coal
Key facts
Power plant · Coalran 36% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1985
- Net generation, 2025
- 5,549,274 MWh
- Grid
- 345 kV to Tucson Electric Power Co (TEPC)
- Location
- Apache County, Arizona
- Operated by
- Tucson Electric Power Co
Output
- Coal
- Oil
Details
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- Technology
- Coal source: “Conventional Steam Coal”
- Age
- 41 years since 1985
- Unused energy
- 10,037 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 11,315 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 62,787,778 |
| Capacity factor, 2025 | 0.356 |
| Heat rate (Btu/kWh), 2025 | 11,314.6 |
| Net generation (MWh), 2025 | 5,549,273.6 |
| Balancing authority code | TEPC |
Solar arrays
Solar arrays
The array area counts panels and inverters only, not buildings, fences or the whole site.
USGS maps the center of this array 10 km from the point this page maps the plant at.
- Array area (acres)
- 93.3
- AC capacity (MW)
- 13.6
- DC capacity (MW)
- 16.4
- Mounting
- Fixed tilt and single-axis tracking
- Site type
- Greenfield
- Began operating
- 2014
Source USPVDB
Source
- U.S. Large-Scale Solar Photovoltaic DatabaseMap services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb
Retirement
EIA-860M September 2026StatusSome generators are scheduled to retire; most of the plant's capacity is not, so it is shown as operating. As of EIA-860M for September 2026.- Next scheduled retirement
- December 2027
- Last scheduled retirement
- December 2032
- Capacity scheduled to retire
- 849.6 MW
- Generators scheduled to retire
- 2
- Share of in-service capacity scheduled
- 48%
- Capacity still in service
- 1,779.2 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Conventional Steam Coal | 424.8 MW | Scheduled to retire | December 2027 |
| 2 | Conventional Steam Coal | 424.8 MW | Scheduled to retire | December 2032 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 345 kV
- Transmission or distribution system owner
- Tucson Electric Power Co
- Balancing authority
- Tucson Electric Power Company
- NERC region
- WECC
Transmission lines within 25 km (6)
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
6 companies6| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| Tucson Electric Power Co | Operator | EIA-860M | ||
| UNS ENERGY CORP | Owner | 50.0% | 31 Dec 2023 | EPA GHGRP |
| SALT RIVER PROJECT AGRICULTURAL IMPROVEMENT & POWER DISTRICT | Owner | 25.0% | 31 Dec 2023 | EPA GHGRP |
| TRI-STATE GENERATION & TRANSMISSION ASSOC INC | Owner | 25.0% | 31 Dec 2023 | EPA GHGRP |
| Springerville Unit 3 Holding LLC | Owner | 25.7% | 31 Dec 2025 | EIA-860 |
| Salt River Project | Owner | 25.7% | 31 Dec 2025 | EIA-860 |
Timeline
- Stated Unit 2 scheduled to retire, 424.8 MW · EIA-860M
- Stated Unit 1 scheduled to retire, 424.8 MW · EIA-860M
- In service · EIA-860M
Sources
8 sourcesSources EIA-860M · GEM · LBNL · USPVDB · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT) · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global 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.
- LBNL — A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024 (OEDI submission 8742)Yin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- U.S. Large-Scale Solar Photovoltaic Database (USPVDB) — USGS and LBNL; one row per facility with its array footprintMap services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Springerville Postponed | Coal | 0.0 km | 400 |