Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/62420
EIA plant 62420
Swanwick Township · Perry · IL
Prairie State Solar Project
Operated by Prairie State Solar, LLC
Published location
Where is Prairie State Solar Project?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
38.208333, -89.579166
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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 IL 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.
19,004
216,613
321,280
422,041
525,263
627,987
725,859
826,035
918,437
1022,153
1111,097
128,333
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 | 9,004 |
| 2 | 16,613 |
| 3 | 21,280 |
| 4 | 22,041 |
| 5 | 25,263 |
| 6 | 27,987 |
| 7 | 25,859 |
| 8 | 26,035 |
| 9 | 18,437 |
| 10 | 22,153 |
| 11 | 11,097 |
| 12 | 8,333 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 9,004 MWh |
| 2 | 16,613 MWh |
| 3 | 21,280 MWh |
| 4 | 22,041 MWh |
| 5 | 25,263 MWh |
| 6 | 27,987 MWh |
| 7 | 25,859 MWh |
| 8 | 26,035 MWh |
| 9 | 18,437 MWh |
| 10 | 22,153 MWh |
| 11 | 11,097 MWh |
| 12 | 8,333 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| PSS01 | Solar Photovoltaic | SUN | 99 | OP |
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Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
62420
Sector
IPP Non-CHP
Water source
Unavailable
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 Prairie State Solar Project 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 Prairie State Solar Project
Variation in the published months
Across 12 numeric monthly generation entries, 6 has the highest recorded value (27,987 MWh) and 12 the lowest (8,333 MWh). Their difference is 19,654 MWh. Missing months have not been treated as zero.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| PSS01 | Solar Photovoltaic | 99.0 | 99.0 | 99.0 | Not supplied |
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.