MARSH RUN GENERATING
OperatingNatural Gas power plant
- Capacity
- 513 MW
- Primary fuel
- Natural Gas
- County
- Fauquier County
- Operator
- OLD DOMINION ELECTRIC COOP
- Status
- Operating
- Commissioned
- 2004
- EIA plant ID
- 7836
- Coordinates
- 38.5291, -77.7686
MARSH RUN GENERATING, a 513 MW Natural Gas power plant in Fauquier County, Virginia. Operated by OLD DOMINION ELECTRIC COOP, commissioned 2004.
Weather peril exposure
MARSH RUN GENERATING is a 513 MW natural gas power plant in Fauquier County, VA, operated by OLD DOMINION ELECTRIC COOP, commissioned in 2004. Fauquier County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.1 of 5 at the 28th national percentile. Hurricane is the leading peril, rated Relatively Low by FEMA at the 66th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Fauquier County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hurricane | Relatively Low | 66th | 3.7 of 5 | 0.09 |
| Earthquake | Relatively Low | 56th | 3.2 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 55th | 3.2 of 5 | 2.7 |
| Strong wind | Relatively Moderate | 47th | 2.9 of 5 | 6.8 |
| Hail | Relatively Low | 43rd | 2.7 of 5 | 3.7 |
| Wildfire | Very Low | 43rd | 2.7 of 5 | <0.01 |
| Winter weather | Relatively Low | 41st | 2.6 of 5 | 10.4 |
| Ice storm | Very Low | 28th | 2.1 of 5 | 0.64 |
| Lightning | Relatively Moderate | 27th | 2.1 of 5 | 40.5 |
| Heat wave | Relatively Low | 27th | 2.1 of 5 | 4.5 |
| Tornado | Very Low | 15th | 1.6 of 5 | 0.40 |
Perils not assessed in Fauquier County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Fauquier County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.