Stoltze CoGen1
Flathead County, Montana · EIA plant ID 58523 · Operator: F H Stoltze Land & Lumber Co
Nameplate3MWSummer 3 MW
Generators1in service
Net generation15GWh12 mo to Aug 2026
Capacity factor59%other units, summer MW
Heat rate—thermal plants only
First online2013
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2013 | 5.1 | 77.3% | — |
| 2014 | 13 | 49.5% | — |
| 2015 | 21.3 | 81.0% | — |
| 2016 | 20.2 | 76.5% | — |
| 2017 | 21.2 | 80.6% | — |
| 2018 | 21.3 | 81.2% | — |
| 2019 | 20.1 | 76.6% | — |
| 2020 | 21.3 | 80.9% | — |
| 2021 | 20.7 | 78.9% | — |
| 2022 | 19 | 72.5% | — |
| 2023 | 19.7 | 74.9% | — |
| 2024 | 17.2 | 65.3% | — |
| 2025 | 21 | 79.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| STL2 | Wood/Wood Waste Biomass | ST | 2.8 | 3 | Oct 2013 | Operating | — | coming soon |
Owner / operator
Operator: F H Stoltze Land & Lumber Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| F H Stoltze Land & Lumber Co | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Flathead Landfill to Gas Energy Facility | 3 MW | 11.2 km |
| Hungry Horse | 428 MW | 17.5 km |
| Big Fork | 4 MW | 38.6 km |
| Kerr | 228 MW | 79 km |
| Libby | 525 MW | 79.3 km |