- Combustion
- Wind & solar
- In development
- Retired
- 10 · 100 · 1,000 MW
Map
- Combustion
- Wind & solar
- In development
- Retired
Shiras: location and 1 exact-grade project within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Shiras
Power plant · Coal
Key facts
Power plant · Coal Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1967
- Net generation, 2019
- -1,659 MWh
- Grid
- 69 kV to City of Marquette - (MI) (MISO)
- Location
- Marquette County, Michigan
- Operated by
- City of Marquette - (MI)
Output
- Coal
- Oil
- Biomass and waste
Details
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- Technology
- Coal source: “Conventional Steam Coal”
- Age
- 59 years since 1967
All 3 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Balancing authority code | MISO |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- April 2019
- Capacity retired
- 77.5 MW
- Generators retired
- 3
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Conventional Steam Coal | 12.5 MW | Retired | April 2019 |
| 2 | Conventional Steam Coal | 21 MW | Retired | April 2019 |
| 3 | Conventional Steam Coal | 44 MW | Retired | April 2019 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 69 kV
- Transmission or distribution system owner
- City of Marquette - (MI)
- Balancing authority
- Midcontinent Independent Transmission System Operator, Inc..
- NERC region
- RFC
Transmission lines within 15 mi (10)
- Arnold - Dead River 345 kV
- Tilden - Presque Isle Station 138 kV
- Presque Isle - Presque Isle Station 138 kV
- Freeman - Presque Isle Station 138 kV
- Perch Lake - Presque Isle Station 138 kV
- North Lake - Presque Isle Station 138 kV
- Empire Mine - Presque Isle Station 138 kV
- Presque Isle Station 138 kV line
- 138 kV line 142890
- National - Freeman 138 kV
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 |
|---|---|---|---|---|
| City of Marquette - (MI) | Operator | EIA-860M | ||
| MARQUETTE BOARD OF LIGHT & POWER | Owner | 100.0% | Dec 31, 2023 | EPA GHGRP |
Timeline
- Stated Units 1, 2, 3 scheduled to retire, 77.5 MW · EIA-860M
- In service · EIA-860M
Sources
6 sourcesSources 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
- EIA-860M
- GEMGlobal 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.
- LBNLYin, 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.
- EIASource: 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)
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| Superior Solar Project, LLC Announced | Solar | 6.3 mi | 150 |
Sources EIA-860M