Grayling Generating Station
Crawford County, Michigan · EIA plant ID 10822 · Operator: CMS Generation Operating LLC
Nameplate39MWSummer 39 MW
Generators1in service
Net generation182GWh12 mo to Dec 2025
Capacity factor54%other units, summer MW
Heat rate12,538Btu/kWhfossil units, electric fuel, HHV
First online1992
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), other 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) |
|---|---|---|---|
| 2001 | 242 | 74.3% | 14,966 |
| 2002 | 198.5 | 62.4% | 14,937 |
| 2003 | 233.1 | 73.2% | 14,211 |
| 2004 | 278.7 | 87.6% | 13,971 |
| 2005 | 253.5 | 79.8% | 14,778 |
| 2006 | 242 | 76.2% | 13,809 |
| 2007 | 246 | 77.6% | 14,181 |
| 2008 | 233.4 | 73.4% | 14,280 |
| 2009 | 190.2 | 60.0% | 14,015 |
| 2010 | 216.8 | 65.1% | 11,504 |
| 2011 | 224.1 | 67.3% | 13,774 |
| 2012 | 164.3 | 49.2% | 14,794 |
| 2013 | 176.9 | 53.1% | 14,486 |
| 2014 | 207.8 | 62.4% | 15,644 |
| 2015 | 116.3 | 34.9% | 15,647 |
| 2016 | 131.4 | 39.3% | 15,164 |
| 2017 | 160.2 | 47.9% | 15,796 |
| 2018 | 176.3 | 52.9% | 14,557 |
| 2019 | 171.2 | 51.3% | 14,687 |
| 2020 | 66.3 | 19.8% | 16,747 |
| 2021 | 203.9 | 61.1% | 15,862 |
| 2022 | 219.2 | 64.7% | 14,230 |
| 2023 | 134.1 | 39.6% | 15,508 |
| 2024 | 164.6 | 48.5% | 13,967 |
| 2025 | 182 | 53.8% | 12,538 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Wood/Wood Waste Biomass | ST | 38.6 | 38.6 | May 1992 | Operating | — | coming soon |
Owner / operator
Operator: CMS Generation Operating LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Grayling Development Partners | 50.0% | 19 MW |
| CMS Generation Holdings Co | 49.0% | 19 MW |
| CMS Generation Grayling Co | 1.0% | 0 MW |
Nearby plants
Within 80 km.
| Lightfoot Solar, LLC | 10 MW | 41.2 km |
| Kalkaska CT #1 | 61 MW | 41.5 km |
| Gaylord - Wolverine | 70 MW | 44.5 km |
| Mio | 5 MW | 44.7 km |
| Livingston Generating Station | 170 MW | 47.4 km |
| Alpine Power Plant | 454 MW | 52.1 km |