Marquette Energy Center
Marquette County, Michigan · EIA plant ID 60559 · Operator: City of Marquette - (MI)
Nameplate51MWSummer 50 MW
Generators3in service
Net generation164GWh12 mo to Dec 2025
Capacity factor37%gas/coal/oil units, summer MW
Heat rate7,931Btu/kWhfossil units, electric fuel, HHV
First online2017Runs as intermediate
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2017 | 25.3 | 13.8% | 8,655 |
| 2018 | 75.1 | 17.1% | 8,562 |
| 2019 | 143.9 | 32.8% | 8,881 |
| 2020 | 147.3 | 33.5% | 8,802 |
| 2021 | 163.6 | 37.3% | 8,847 |
| 2022 | 150.6 | 34.3% | 9,478 |
| 2023 | 152.6 | 34.8% | 8,551 |
| 2024 | 162.2 | 36.9% | 8,384 |
| 2025 | 163.7 | 37.3% | 7,931 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| MEC1 | Natural Gas Internal Combustion Engine | IC | 17.1 | 16.7 | Aug 2017 | Operating | — | coming soon |
| MEC2 | Natural Gas Internal Combustion Engine | IC | 17.1 | 16.7 | Aug 2017 | Operating | — | coming soon |
| MEC3 | Natural Gas Internal Combustion Engine | IC | 17.1 | 16.7 | Aug 2017 | Operating | — | coming soon |
Owner / operator
Operator: City of Marquette - (MI). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Marquette - (MI) | 100.0% | 51 MW |
Nearby plants
Within 80 km.
| James R Smith | 3 MW | 2.1 km |
| Plant Four | 24 MW | 2.8 km |
| McClure Dam | 8 MW | 3.1 km |
| F.D. Kuester Generating Station | 132 MW | 8.2 km |
| Hoist | 3 MW | 10 km |
| Superior Solar Project, LLC | — | 12.5 km |