Riley Generating StationRetirement planned
Ottawa County, Michigan · EIA plant ID 56503 · Operator: City of Zeeland - (MI)
Nameplate10MWSummer 10 MW
Generators5in service
Net generation1GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate13,164Btu/kWhfossil units, electric fuel, HHV
First online2006Runs as rarely runs
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) |
|---|---|---|---|
| 2006 | 0.7 | 1.7% | 11,525 |
| 2007 | 0.3 | 0.3% | 18,620 |
| 2008 | 0 | 0.0% | — |
| 2009 | 0 | 0.0% | — |
| 2010 | 0.2 | 0.3% | 19,565 |
| 2011 | 0.3 | 0.3% | 17,643 |
| 2012 | 0.8 | 0.9% | 12,824 |
| 2013 | 0.4 | 0.4% | 14,077 |
| 2014 | 0.1 | 0.1% | — |
| 2015 | 0.2 | 0.2% | 15,818 |
| 2016 | 0.8 | 0.9% | 12,669 |
| 2017 | 0.8 | 0.9% | 13,310 |
| 2018 | 1.4 | 1.6% | 12,108 |
| 2019 | 1.8 | 2.0% | 11,546 |
| 2020 | 1.2 | 1.4% | 11,752 |
| 2021 | 0.5 | 0.5% | 15,464 |
| 2022 | 0.6 | 0.6% | 14,830 |
| 2023 | 0.1 | 0.1% | — |
| 2024 | 0.2 | 0.2% | 22,651 |
| 2025 | 0.8 | 1.0% | 13,164 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | IC | 2 | 2 | Jul 2006 | Operating · retirement planned | Jun 2050 | coming soon |
| 2 | Natural Gas Internal Combustion Engine | IC | 2 | 2 | Jul 2006 | Operating · retirement planned | Jun 2050 | coming soon |
| 3 | Natural Gas Internal Combustion Engine | IC | 2 | 2 | Jul 2006 | Operating · retirement planned | Jun 2050 | coming soon |
| 4 | Natural Gas Internal Combustion Engine | IC | 2 | 2 | Jul 2006 | Operating · retirement planned | Jun 2050 | coming soon |
| 5 | Natural Gas Internal Combustion Engine | IC | 2 | 2 | Jul 2006 | Operating · retirement planned | Jun 2050 | coming soon |
Owner / operator
Operator: City of Zeeland - (MI). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Zeeland - (MI) | 100.0% | 10 MW |
Nearby plants
Within 80 km.
| Zeeland Generating Station | 968 MW | 1.5 km |
| Zeeland Farm Services | 3 MW | 2.7 km |
| Municipal Power Plant | 2 MW | 3.2 km |
| Zeeland | 22 MW | 5.1 km |
| Holland Energy Park | 149 MW | 8.4 km |
| Autumn Hills Generating Facility | retired | 8.8 km |