Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/6459
EIA plant 6459
Big Fork · Flathead · MT
Big Fork
Operated by PacifiCorp
Published location
Where is Big Fork?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
48.059200, -114.070800
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Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the MT plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
11,517
22,014
30
40
53,209
63,232
73,140
81,594
91,664
101,311
111,893
121,762
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 1,517 |
| 2 | 2,014 |
| 3 | 0 |
| 4 | 0 |
| 5 | 3,209 |
| 6 | 3,232 |
| 7 | 3,140 |
| 8 | 1,594 |
| 9 | 1,664 |
| 10 | 1,311 |
| 11 | 1,893 |
| 12 | 1,762 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 1,517 MWh |
| 2 | 2,014 MWh |
| 3 | 0 MWh |
| 4 | 0 MWh |
| 5 | 3,209 MWh |
| 6 | 3,232 MWh |
| 7 | 3,140 MWh |
| 8 | 1,594 MWh |
| 9 | 1,664 MWh |
| 10 | 1,311 MWh |
| 11 | 1,893 MWh |
| 12 | 1,762 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 1 | Conventional Hydroelectric | WAT | 1.7 | OP |
| 2 | Conventional Hydroelectric | WAT | 1.7 | OP |
| 3 | Conventional Hydroelectric | WAT | 0.7 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
6459
Sector
Electric Utility
Water source
Swan River
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right Big Fork power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at Big Fork
Variation in the published months
Across 12 numeric monthly generation entries, 6 has the highest recorded value (3,232 MWh) and 3, 4 the lowest (0 MWh). Their difference is 3,232 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 3 numeric rows displayed in this table, MW ranges from 0.7 (3) to 1.7 (1, 2). The difference is 1 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 1.7 | 1.9 | 1.9 | 0.1 |
| 2 | Conventional Hydroelectric | 1.7 | 1.9 | 1.9 | 0.1 |
| 3 | Conventional Hydroelectric | 0.7 | 0.8 | 0.8 | 0.1 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.