Earp Solar, LLC
Solar power plant in Warren County, Illinois. 35 MW of nameplate capacity across 1 generator, operated by Birch Creek Power, LLC.
Also known as EIA plant 66631
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 35 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2024First generator online
- Operator
- Birch Creek Power, LLCEIA operator ID 66331
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Warren County, IL40.8918, −90.6688
- EIA plant ID
- 66631EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Earp Solar produces
Free · EIA-923Net generation, 2025
75.8 GWh
75,849 MWh, final
Capacity factor, 2025
24.7%
2024: Not reported
January to July 2026
49.1 GWh
Provisional
Range, 2024 to 2025
35.1–75.8
GWh a year. Low 2024, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | 35,116 | Not reported | 12 of 12 |
| 2025 | 75,849 | 24.7% | 12 of 12 |
| 2026 (provisional, partial year) | 49,147 | 27.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| PV | Solar Photovoltaic | 35.0 | April 2024 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Birch Creek Power, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Earp Solar
More plants operated by Birch Creek Power, LLC
Questions about Earp Solar
How much power does Earp Solar, LLC produce?
Earp Solar, LLC reported 75,849 MWh (75.8 GWh) of net generation in 2025, a 24.7% capacity factor on 35 MW of nameplate capacity. From January to July 2026 it reported 49.1 GWh, which is provisional.
Where is Earp Solar, LLC?
Earp Solar, LLC is in Warren County, Illinois, at 40.8918, −90.6688. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Earp Solar, LLC?
EIA-860M for August 2026 lists Birch Creek Power, LLC as the operator (EIA operator ID 66331). The operator is not always the owner.
When did Earp Solar, LLC start operating?
Its first generator began operating in April 2024, according to EIA-860M.
Does InfraMap have power prices for Earp Solar, LLC?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Earp Solar, LLC, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page