Tesoro Mandan Cogeneration Plant
Morton County, North Dakota · EIA plant ID 52133 · Operator: Tesoro Refining and Marketing Co LLC
Nameplate9MWSummer 8 MW
Generators3in service
Net generation45GWh12 mo to Aug 2026
Capacity factor61%gas/coal/oil units, summer MW
Heat rate14,421Btu/kWhfossil units, electric fuel, HHV
First online1954Runs as baseload
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 | 81.2 | 110.4% | 10,210 |
| 2002 | 66 | 89.7% | 13,508 |
| 2003 | 65.8 | 89.5% | 4,258 |
| 2004 | 69.1 | 93.6% | 4,383 |
| 2005 | 69.2 | 94.1% | 4,383 |
| 2006 | 68.8 | 93.5% | 4,383 |
| 2007 | 72.2 | 98.2% | 4,383 |
| 2008 | 61.4 | 10.6% | 4,828 |
| 2009 | 63.6 | 86.4% | 4,816 |
| 2010 | 54.2 | 73.6% | 4,931 |
| 2011 | 60.9 | 82.8% | 4,864 |
| 2012 | 57.7 | 78.1% | 4,906 |
| 2013 | 58.9 | 80.1% | 5,110 |
| 2014 | 62 | 84.3% | 5,039 |
| 2015 | 61 | 83.0% | 5,125 |
| 2016 | 60.3 | 81.7% | 13,785 |
| 2017 | 50.4 | 68.5% | 13,529 |
| 2018 | 61.3 | 83.3% | 13,414 |
| 2019 | 59.7 | 81.1% | 13,677 |
| 2020 | 57.3 | 77.6% | 13,600 |
| 2021 | 53.7 | 73.0% | 13,424 |
| 2022 | 43.4 | 88.5% | 14,270 |
| 2023 | 31.1 | 42.2% | 15,150 |
| 2024 | 41.7 | 56.5% | 13,547 |
| 2025 | 57.9 | 78.7% | 13,511 |
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 | Other Gases | ST | 3.1 | 2.8 | Oct 1954 | Operating | — | coming soon |
| GEN2 | Other Gases | ST | 3.1 | 2.8 | Oct 1954 | Operating | — | coming soon |
| GEN3 | Other Gases | ST | 3.1 | 2.8 | May 1958 | Operating | — | coming soon |
Owner / operator
Operator: Tesoro Refining and Marketing Co LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Tesoro Refining and Marketing Co LLC | 100.0% | 9 MW |
Nearby plants
Within 80 km.
| R M Heskett | 178 MW | 2 km |
| Oliver Wind III, LLC | 99 MW | 24.9 km |
| FPL Energy Burleigh County Wind | 50 MW | 31.8 km |
| Baldwin Wind LLC | 102 MW | 32.1 km |
| Wilton Wind II LLC | 50 MW | 34.4 km |
| Milton R Young | 734 MW | 34.9 km |