Dean
Natural gas power plant in St Clair County, Michigan. 357.6 MW of nameplate capacity across 4 generators, operated by DTE Electric Company.
Also known as Dean Power Plant · EIA plant 55718
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 357.6 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- June 2002First generator online
- Operator
- DTE Electric CompanyEIA operator ID 5109
- Grid
- MISOBalancing authority MISO
- Price nodes
- 4 MISO nodesResource nodes with prices
- Location
- St Clair County, MI42.7741, −82.4820
- EIA plant ID
- 55718EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Dean produces
Free · EIA-923Net generation, 2025
705 GWh
704,817 MWh, final
Capacity factor, 2025
22.5%
2024: 24.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2016 to 2025
120.0–770.1
GWh a year. Low 2017, high 2024
| 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 | 113,110 | Not reported | 7 of 12 |
| 2003 | 33,110 | Not reported | 12 of 12 |
| 2004 | −1,590 | Not reported | 12 of 12 |
| 2005 | 89,294 | Not reported | 12 of 12 |
| 2006 | 79,219 | Not reported | 12 of 12 |
| 2007 | 132,357 | Not reported | 12 of 12 |
| 2008 | 14,013 | Not reported | 12 of 12 |
| 2009 | 14,253 | Not reported | 12 of 12 |
| 2010 | 54,121 | 1.7% | 12 of 12 |
| 2011 | 26,730 | 0.9% | 12 of 12 |
| 2012 | 125,151 | 4.0% | 12 of 12 |
| 2013 | 82,080 | 2.6% | 12 of 12 |
| 2014 | 6,996 | 0.2% | 12 of 12 |
| 2015 | 16,173 | 0.6% | 11 of 12 |
| 2016 | 293,125 | 9.3% | 12 of 12 |
| 2017 | 120,047 | 3.8% | 12 of 12 |
| 2018 | 266,109 | 8.5% | 12 of 12 |
| 2019 | 269,245 | 8.6% | 12 of 12 |
| 2020 | 738,320 | 23.5% | 12 of 12 |
| 2021 | 315,176 | 10.1% | 12 of 12 |
| 2022 | 336,525 | 10.7% | 12 of 12 |
| 2023 | 589,084 | 18.8% | 12 of 12 |
| 2024 | 770,055 | 24.5% | 12 of 12 |
| 2025 | 704,817 | 22.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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, 2025
479,996
US short tons. 2024: 528,778
SO₂, 2025
2
US short tons
NOx, 2025
112
US short tons
CO₂ per MWh, calculated
0.68 t
About 1,362 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 55718 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
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 |
|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | 89.4 | June 2002 |
| GT2 | Natural Gas Fired Combustion Turbine | 89.4 | June 2002 |
| GT3 | Natural Gas Fired Combustion Turbine | 89.4 | June 2002 |
| GT4 | Natural Gas Fired Combustion Turbine | 89.4 | June 2002 |
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 DTE Electric Company 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 Dean
More plants operated by DTE Electric Company
Questions about Dean
How much power does Dean produce?
Dean reported 704,817 MWh (705 GWh) of net generation in 2025, a 22.5% capacity factor on 357.6 MW of nameplate capacity.
Where is Dean?
Dean is in St Clair County, Michigan, at 42.7741, −82.4820. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Dean?
EIA-860M for August 2026 lists DTE Electric Company as the operator (EIA operator ID 5109). The operator is not always the owner.
When did Dean start operating?
Its first generator began operating in June 2002, according to EIA-860M.
Does InfraMap have power prices for Dean?
Yes. InfraMap has MISO day-ahead and real-time prices at 4 price nodes linked to Dean, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page