Stoltze CoGen1
Wood biomass power plant in Flathead County, Montana. 2.8 MW of nameplate capacity across 1 generator, operated by F H Stoltze Land & Lumber Co.
Also known as EIA plant 58523
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2.8 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 2013First generator online
- Operator
- F H Stoltze Land & Lumber CoEIA operator ID 58498
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Flathead County, MT48.3877, −114.2409
- EIA plant ID
- 58523EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Stoltze CoGen1 produces
Free · EIA-923Net generation, 2025
21.0 GWh
20,961 MWh, final
Capacity factor, 2025
85.5%
2024: 70.0%
January to July 2026
7.35 GWh
Provisional
Range, 2015 to 2025
17.2–21.3
GWh a year. Low 2024, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | 5,117 | Not reported | 3 of 12 |
| 2014 | 13,009 | 39.1% | 12 of 12 |
| 2015 | 21,281 | 63.9% | 12 of 12 |
| 2016 | 20,150 | Not reported | 12 of 12 |
| 2017 | 21,182 | 86.4% | 12 of 12 |
| 2018 | 21,331 | 87.0% | 12 of 12 |
| 2019 | 20,140 | 82.1% | 12 of 12 |
| 2020 | 21,309 | 86.6% | 12 of 12 |
| 2021 | 20,725 | 84.5% | 12 of 12 |
| 2022 | 19,041 | 77.6% | 12 of 12 |
| 2023 | 19,688 | 80.3% | 12 of 12 |
| 2024 | 17,214 | 70.0% | 12 of 12 |
| 2025 | 20,961 | 85.5% | 12 of 12 |
| 2026 (provisional, partial year) | 7,354 | 51.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| STL2 | Wood/Wood Waste Biomass | 2.8 | October 2013 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists F H Stoltze Land & Lumber Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Stoltze CoGen1
How much power does Stoltze CoGen1 produce?
Stoltze CoGen1 reported 20,961 MWh (21.0 GWh) of net generation in 2025, a 85.5% capacity factor on 2.8 MW of nameplate capacity. From January to July 2026 it reported 7.35 GWh, which is provisional.
Where is Stoltze CoGen1?
Stoltze CoGen1 is in Flathead County, Montana, at 48.3877, −114.2409. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Stoltze CoGen1?
EIA-860M for August 2026 lists F H Stoltze Land & Lumber Co as the operator (EIA operator ID 58498). The operator is not always the owner.
When did Stoltze CoGen1 start operating?
Its first generator began operating in October 2013, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page