Marsh Run Generation Facility
Natural gas power plant in Fauquier County, Virginia. 596.7 MW of nameplate capacity across 3 generators, operated by Old Dominion Electric Coop.
Also known as Marsh Run Power Station · EIA plant 7836
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 596.7 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- September 2004First generator online
- Operator
- Old Dominion Electric CoopEIA operator ID 40229
- Grid
- PJMBalancing authority PJM
- Price nodes
- 3 PJM nodesResource nodes with prices
- Location
- Fauquier County, VA38.5283, −77.7681
- EIA plant ID
- 7836EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Marsh Run Generation Facility produces
Free · EIA-923Net generation, 2025
687 GWh
687,397 MWh, final
Capacity factor, 2025
13.2%
2024: Not reported
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
215.4–708.3
GWh a year. Low 2023, high 2019
| 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 | 13,652 | Not reported | 1 of 12 |
| 2005 | 239,326 | Not reported | 12 of 12 |
| 2006 | 221,630 | Not reported | 12 of 12 |
| 2007 | 270,629 | Not reported | 12 of 12 |
| 2008 | 140,644 | Not reported | 12 of 12 |
| 2009 | 92,758 | Not reported | 12 of 12 |
| 2010 | 612,380 | 13.6% | 12 of 12 |
| 2011 | 146,792 | 3.3% | 12 of 12 |
| 2012 | 115,364 | 2.6% | 12 of 12 |
| 2013 | 214,260 | 4.8% | 12 of 12 |
| 2014 | 389,443 | 8.7% | 12 of 12 |
| 2015 | 681,287 | 15.2% | 12 of 12 |
| 2016 | 547,162 | 12.1% | 12 of 12 |
| 2017 | 464,666 | 10.3% | 12 of 12 |
| 2018 | 564,064 | 12.5% | 12 of 12 |
| 2019 | 708,342 | 15.8% | 12 of 12 |
| 2020 | 573,993 | 12.7% | 12 of 12 |
| 2021 | 672,609 | 15.0% | 12 of 12 |
| 2022 | 333,810 | 7.4% | 12 of 12 |
| 2023 | 215,386 | 4.8% | 12 of 12 |
| 2024 | 390,791 | Not reported | 12 of 12 |
| 2025 | 687,397 | 13.2% | 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 · PJMEmissions
Free · EPA CAMPDCO₂, 2025
453,404
US short tons. 2024: 255,993
SO₂, 2025
2
US short tons
NOx, 2025
140
US short tons
CO₂ per MWh, calculated
0.66 t
About 1,319 lb per MWh
3 of 3 EPA units reported CO₂ in 2025 (EU1, EU2, EU3), matched to EIA plant 7836 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 |
|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 198.9 | September 2004 |
| 2 | Natural Gas Fired Combustion Turbine | 198.9 | September 2004 |
| 3 | Natural Gas Fired Combustion Turbine | 198.9 | September 2004 |
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 Old Dominion Electric Coop 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 Marsh Run Generation Facility
More plants operated by Old Dominion Electric Coop
Questions about Marsh Run Generation Facility
How much power does Marsh Run Generation Facility produce?
Marsh Run Generation Facility reported 687,397 MWh (687 GWh) of net generation in 2025, a 13.2% capacity factor on 596.7 MW of nameplate capacity.
Where is Marsh Run Generation Facility?
Marsh Run Generation Facility is in Fauquier County, Virginia, at 38.5283, −77.7681. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Marsh Run Generation Facility?
EIA-860M for August 2026 lists Old Dominion Electric Coop as the operator (EIA operator ID 40229). The operator is not always the owner.
When did Marsh Run Generation Facility start operating?
Its first generator began operating in September 2004, according to EIA-860M.
Does InfraMap have power prices for Marsh Run Generation Facility?
Yes. InfraMap has PJM day-ahead and real-time prices at 3 price nodes linked to Marsh Run Generation Facility, 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
- PJM 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