Lewis & Clark
Richland County, Montana · EIA plant ID 6089 · Operator: Montana-Dakota Utilities Co
×50 MW coal retired since 2020 (latest Mar 2021)
Nameplate19MWSummer 18 MW
Generators2in service
Net generation11GWh12 mo to Aug 2026
Capacity factor7%gas/coal/oil units, summer MW
Heat rate10,022Btu/kWhfossil units, electric fuel, HHV
First online2016Runs as peaking
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), 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) |
|---|---|---|---|
| 2001 | 311.8 | — | — |
| 2002 | 286.5 | — | — |
| 2003 | 323.2 | 70.5% | 13,137 |
| 2004 | 347.9 | 75.7% | 12,943 |
| 2005 | 284 | 62.0% | 13,428 |
| 2006 | 336.9 | 73.5% | 12,714 |
| 2007 | 314.7 | 68.7% | 12,750 |
| 2008 | 331.5 | 72.2% | 12,607 |
| 2009 | 316.5 | 69.1% | 12,637 |
| 2010 | 315.4 | 68.8% | 12,622 |
| 2011 | 300.8 | 64.7% | 12,762 |
| 2012 | 254 | 54.5% | 12,715 |
| 2013 | 299 | 64.3% | 12,818 |
| 2014 | 290.2 | 62.4% | 12,770 |
| 2015 | 222.2 | 47.8% | 13,210 |
| 2016 | 273 | 46.5% | 13,089 |
| 2017 | 230.3 | 36.9% | 13,074 |
| 2018 | 242.8 | 38.9% | 13,447 |
| 2019 | 263.5 | 42.2% | 13,335 |
| 2020 | 232.3 | 37.1% | 13,220 |
| 2021 | 66.9 | 28.5% | 13,212 |
| 2022 | -0 | -0.0% | — |
| 2023 | 19.5 | 12.3% | 9,455 |
| 2024 | 1.8 | 1.1% | 15,913 |
| 2025 | 10.4 | 6.5% | 10,081 |
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 |
|---|---|---|---|---|---|---|---|---|
| 2 | Natural Gas Internal Combustion Engine | IC | 9.3 | 9.1 | Apr 2016 | Operating | — | coming soon |
| 3 | Natural Gas Internal Combustion Engine | IC | 9.3 | 9.1 | Apr 2016 | Operating | — | coming soon |
| 1 | Conventional Steam Coal | ST | 50 | 53.1 | Oct 1958 | Retired Mar 2021 | — | coming soon |
Owner / operator
Operator: Montana-Dakota Utilities Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Montana-Dakota Utilities Co | 100.0% | 19 MW |
Nearby plants
Within 80 km.
| Sidney MT Plant | retired | 4.6 km |
| Lonesome Creek Station | 363 MW | 45.2 km |
| Culbertson Generation Station | 108 MW | 61.6 km |
| OREG 1 Inc | 30 MW | 62.2 km |
| OREG 2 Inc | 30 MW | 62.2 km |
| Pioneer Generating Station | 897 MW | 63.4 km |