- Combustion
- Retired
- 10 · 100 · 1,000 MW
Map
- Combustion
- Retired
Nucla: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Nucla
Power plant · Coal
Key facts
Power plant · Coalran 6% of 2018 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1959
- Net generation, 2018
- 61,553 MWh
- Grid
- 115 kV to Tri-State G & T Assn, Inc (WACM)
- Location
- Montrose County, Colorado
- Operated by
- Tri-State G & T Assn, Inc
Output
- Gas
- Coal
- Oil
Details
Who’s behind it
Interested in this project?
Set an alert Book a call Join the beta
Our team gets you what you need.
Beta: private project space · data room · readiness check
- Technology
- Coal source: “Conventional Steam Coal”
- Age
- 67 years since 1959
All 3 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Balancing authority code | WACM |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- September 2019
- Capacity retired
- 113.8 MW
- Generators retired
- 4
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Conventional Steam Coal | 11.5 MW | Retired | September 2019 |
| 2 | Conventional Steam Coal | 11.5 MW | Retired | September 2019 |
| 3 | Conventional Steam Coal | 11.5 MW | Retired | September 2019 |
| ST4 | Conventional Steam Coal | 79.3 MW | Retired | September 2019 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 115 kV
- Transmission or distribution system owner
- Tri-State G & T Assn, Inc
- Balancing authority
- Western Area Power Administration - Rocky Mountain Region
- NERC region
- WECC
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| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| Tri-State G & T Assn, Inc | Operator | EIA-860M | ||
| TRI-STATE GENERATION & TRANSMISSION ASSOC INC | Owner | 100.0% | 31 Dec 2023 | EPA GHGRP |
Timeline
- Stated Units 1, 2, 3, ST4 scheduled to retire, 113.8 MW · EIA-860M
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · GEM · 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
- 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.
- 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)