Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/54761
EIA plant 54761
Hermiston · Umatilla · OR
Hermiston Generating Plant
Operated by Hermiston Generating Co LP
Published location
Where is Hermiston Generating Plant?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
45.804200, -119.370000
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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 OR 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.
1305,142
2290,691
3300,534
4252,668
5189,746
6257,648
7290,799
8291,692
9290,301
10287,460
11278,784
12310,199
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 | 305,142 |
| 2 | 290,691 |
| 3 | 300,534 |
| 4 | 252,668 |
| 5 | 189,746 |
| 6 | 257,648 |
| 7 | 290,799 |
| 8 | 291,692 |
| 9 | 290,301 |
| 10 | 287,460 |
| 11 | 278,784 |
| 12 | 310,199 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 305,142 MWh |
| 2 | 290,691 MWh |
| 3 | 300,534 MWh |
| 4 | 252,668 MWh |
| 5 | 189,746 MWh |
| 6 | 257,648 MWh |
| 7 | 290,799 MWh |
| 8 | 291,692 MWh |
| 9 | 290,301 MWh |
| 10 | 287,460 MWh |
| 11 | 278,784 MWh |
| 12 | 310,199 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| GEN2 | Natural Gas Fired Combined Cycle | NG | 204.5 | OP |
| GEN4 | Natural Gas Fired Combined Cycle | NG | 204.5 | OP |
| GEN1 | Natural Gas Fired Combined Cycle | NG | 106.1 | OP |
| GEN3 | Natural Gas Fired Combined Cycle | NG | 106.1 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
54761
Sector
IPP CHP
Water source
Columbia 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 Hermiston Generating Plant 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 Hermiston Generating Plant
Variation in the published months
Across 12 numeric monthly generation entries, 12 has the highest recorded value (310,199 MWh) and 5 the lowest (189,746 MWh). Their difference is 120,453 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 4 numeric rows displayed in this table, MW ranges from 106.1 (GEN1, GEN3) to 204.5 (GEN2, GEN4). The difference is 98.4 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 |
|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | 106.1 | 80.0 | 83.0 | 65.0 |
| GEN2 | Natural Gas Fired Combined Cycle | 204.5 | 152.0 | 160.0 | 99.0 |
| GEN3 | Natural Gas Fired Combined Cycle | 106.1 | 80.0 | 83.0 | 65.0 |
| GEN4 | Natural Gas Fired Combined Cycle | 204.5 | 152.0 | 160.0 | 99.0 |
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.