Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/4158
EIA plant 4158
Glen Rock · Converse · WY
Dave Johnston
Operated by PacifiCorp
Published location
Where is Dave Johnston?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
42.837800, -105.776900
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.
1330,552
2289,455
3295,659
4201,102
5246,949
6315,298
7365,032
8352,116.01
9334,251
10348,674
11338,658
12421,301
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 | 330,552 |
| 2 | 289,455 |
| 3 | 295,659 |
| 4 | 201,102 |
| 5 | 246,949 |
| 6 | 315,298 |
| 7 | 365,032 |
| 8 | 352,116.01 |
| 9 | 334,251 |
| 10 | 348,674 |
| 11 | 338,658 |
| 12 | 421,301 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 330,552 MWh |
| 2 | 289,455 MWh |
| 3 | 295,659 MWh |
| 4 | 201,102 MWh |
| 5 | 246,949 MWh |
| 6 | 315,298 MWh |
| 7 | 365,032 MWh |
| 8 | 352,116 MWh |
| 9 | 334,251 MWh |
| 10 | 348,674 MWh |
| 11 | 338,658 MWh |
| 12 | 421,301 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 4 | Conventional Steam Coal | SUB | 360 | OP |
| 3 | Conventional Steam Coal | SUB | 229.5 | OP |
| 1 | Conventional Steam Coal | SUB | 113.6 | OP |
| 2 | Conventional Steam Coal | SUB | 113.6 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
4158
Sector
Electric Utility
Water source
North Platte 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 Dave Johnston 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 Dave Johnston
Variation in the published months
Across 12 numeric monthly generation entries, 12 has the highest recorded value (421,301 MWh) and 4 the lowest (201,102 MWh). Their difference is 220,199 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 113.6 (1, 2) to 360 (4). The difference is 246.4 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 |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | 113.6 | 93.0 | 99.0 | 45.0 |
| 2 | Conventional Steam Coal | 113.6 | 102.0 | 106.0 | 45.0 |
| 3 | Conventional Steam Coal | 229.5 | 220.0 | 220.0 | 100.0 |
| 4 | Conventional Steam Coal | 360.0 | 330.0 | 330.0 | 125.0 |
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.