MANDAN REFINERY
OperatingPower plant
- Capacity
- 8 MW
- Primary fuel
- Other
- County
- Morton County
- Operator
- TESORO REFINING AND MARKETING CO LLC
- Status
- Operating
- Commissioned
- 1954
- EIA plant ID
- 52133
- Coordinates
- 46.8505, -100.8818
MANDAN REFINERY, an 8 MW power plant in Morton County, North Dakota. Operated by TESORO REFINING AND MARKETING CO LLC, commissioned 1954.
Weather peril exposure
MANDAN REFINERY is an 8 MW power plant in Morton County, ND, operated by TESORO REFINING AND MARKETING CO LLC, commissioned in 1954. Morton County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 5.0 of 5 at the 99th national percentile. Hail is the leading peril, rated Relatively High by FEMA at the 99th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Morton County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Hail | Relatively High | 99th | 5.0 of 5 | 2.6 |
| Winter weather | Relatively High | 99th | 4.9 of 5 | 19.5 |
| Ice storm | Relatively High | 91st | 4.6 of 5 | 0.88 |
| Heat wave | Very Low | 79th | 4.1 of 5 | 2.0 |
| Wildfire | Relatively Low | 67th | 3.7 of 5 | <0.01 |
| Strong wind | Relatively Low | 66th | 3.6 of 5 | 1.7 |
| Tornado | Relatively Low | 53rd | 3.1 of 5 | 0.55 |
| Riverine flooding | Relatively Low | 50th | 3.0 of 5 | 0.68 |
| Lightning | Very Low | 30th | 2.2 of 5 | 31.2 |
| Earthquake | Very Low | 4th | 1.2 of 5 | <0.01 |
Perils not assessed in Morton 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Morton 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.