Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/57703
EIA plant 57703
Cheyenne · Laramie · WY
Cheyenne Prairie Generating Station
Operated by Black Hills Service Company LLC
Published location
Where is Cheyenne Prairie Generating Station?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
41.123611, -104.720000
Open the interactive map ↗Map data © OpenStreetMap contributors
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 WY 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.
143,791
240,006
334,980
533,807
640,123
758,249
842,467
927,017
1018,665
1148,240
1242,808
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 11 of 11 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 | 43,791 |
| 2 | 40,006 |
| 3 | 34,980 |
| 5 | 33,807 |
| 6 | 40,123 |
| 7 | 58,249 |
| 8 | 42,467 |
| 9 | 27,017 |
| 10 | 18,665 |
| 11 | 48,240 |
| 12 | 42,808 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 43,791 MWh |
| 2 | 40,006 MWh |
| 3 | 34,980 MWh |
| 5 | 33,807 MWh |
| 6 | 40,123 MWh |
| 7 | 58,249 MWh |
| 8 | 42,467 MWh |
| 9 | 27,017 MWh |
| 10 | 18,665 MWh |
| 11 | 48,240 MWh |
| 12 | 42,808 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 01A | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| 01B | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| 02A | Natural Gas Fired Combustion Turbine | NG | 40 | OP |
| 01C | Natural Gas Fired Combined Cycle | NG | 20 | OP |
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Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
57703
Sector
Electric Utility
Water source
City of Cheyenne WY
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 Cheyenne Prairie Generating Station 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 Cheyenne Prairie Generating Station
Variation in the published months
Across 11 numeric monthly generation entries, 7 has the highest recorded value (58,249 MWh) and 10 the lowest (18,665 MWh). Their difference is 39,584 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 20 (01C) to 40 (01A, 01B, 02A). The difference is 20 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 |
|---|---|---|---|---|---|
| 01A | Natural Gas Fired Combined Cycle | 40.0 | 37.0 | 37.0 | 20.0 |
| 01B | Natural Gas Fired Combined Cycle | 40.0 | 37.0 | 37.0 | 20.0 |
| 01C | Natural Gas Fired Combined Cycle | 20.0 | 20.0 | 20.0 | 5.0 |
| 02A | Natural Gas Fired Combustion Turbine | 40.0 | 37.0 | 37.0 | 20.0 |
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.