Lewis & Clark
Natural gas power plant in Richland County, Montana. 18.6 MW of nameplate capacity across 2 generators, operated by Montana-Dakota Utilities Co.
Also known as EIA plant 6089
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 18.6 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- April 2016First generator online
- Operator
- Montana-Dakota Utilities CoEIA operator ID 12199
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Richland County, MT47.6785, −104.1567
- EIA plant ID
- 6089EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Lewis & Clark produces
Free · EIA-923Net generation, 2025
10.4 GWh
10,363 MWh, final
Capacity factor, 2025
6.4%
2024: -0.9%
January to July 2026
6.74 GWh
Provisional
Range, 2017 to 2025
10.4–263.5
GWh a year. Low 2025, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 323,757 | Not reported | 12 of 12 |
| 2001 | 311,849 | Not reported | 12 of 12 |
| 2002 | 286,512 | Not reported | 12 of 12 |
| 2003 | 323,158 | Not reported | 12 of 12 |
| 2004 | 347,857 | Not reported | 12 of 12 |
| 2005 | 283,984 | Not reported | 12 of 12 |
| 2006 | 336,937 | Not reported | 12 of 12 |
| 2007 | 314,675 | Not reported | 12 of 12 |
| 2008 | 331,504 | Not reported | 12 of 12 |
| 2009 | 316,534 | Not reported | 12 of 12 |
| 2010 | 315,371 | 72.0% | 12 of 12 |
| 2011 | 300,792 | 68.7% | 12 of 12 |
| 2012 | 254,009 | 57.8% | 12 of 12 |
| 2013 | 52,601 | 70.7% | 2 of 12 |
| 2014 | 57,132 | 76.8% | 2 of 12 |
| 2015 | 26,391 | 70.9% | 1 of 12 |
| 2016 | 195,095 | Not reported | 9 of 12 |
| 2017 | 230,290 | 38.3% | 12 of 12 |
| 2018 | 242,808 | 40.4% | 12 of 12 |
| 2019 | 263,459 | 43.8% | 12 of 12 |
| 2020 | 232,285 | 38.5% | 12 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | −222 | -0.8% | 2 of 12 |
| 2023 | −161 | -1.2% | 1 of 12 |
| 2024 | −116 | -0.9% | 1 of 12 |
| 2025 | 10,363 | 6.4% | 12 of 12 |
| 2026 (provisional, partial year) | 6,735 | 7.1% | 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 account · MISOEmissions
Free · EPA CAMPDCO₂, 2021
96,367
US short tons. 2020: 345,980
SO₂, 2021
6
US short tons
NOx, 2021
169
US short tons
1 of 1 EPA units reported CO₂ in 2021 (B1), matched to EIA plant 6089 through the EPA–EIA crosswalk.
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 |
|---|---|---|---|
| 2 | Natural Gas Internal Combustion Engine | 9.3 | April 2016 |
| 3 | Natural Gas Internal Combustion Engine | 9.3 | April 2016 |
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 Montana-Dakota Utilities 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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Power plants near Lewis & Clark
More plants operated by Montana-Dakota Utilities Co
Questions about Lewis & Clark
How much power does Lewis & Clark produce?
Lewis & Clark reported 10,363 MWh (10.4 GWh) of net generation in 2025, a 6.4% capacity factor on 18.6 MW of nameplate capacity. From January to July 2026 it reported 6.74 GWh, which is provisional.
Where is Lewis & Clark?
Lewis & Clark is in Richland County, Montana, at 47.6785, −104.1567. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Lewis & Clark?
EIA-860M for August 2026 lists Montana-Dakota Utilities Co as the operator (EIA operator ID 12199). The operator is not always the owner.
When did Lewis & Clark start operating?
Its first generator began operating in April 2016, according to EIA-860M.
Does InfraMap have power prices for Lewis & Clark?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Lewis & Clark, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page