Indy Solar III, LLC
Solar power plant in Marion County, Indiana. 8.6 MW of nameplate capacity across 1 generator, operated by Onward Energy.
Also known as EIA plant 58553
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 8.6 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2013First generator online
- Operator
- Onward EnergyEIA operator ID 60453
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Marion County, IN39.6594, −86.2597
- EIA plant ID
- 58553EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Indy Solar III produces
Free · EIA-923Net generation, 2025
13.0 GWh
13,040 MWh, final
Capacity factor, 2025
17.3%
2024: 17.9%
January to July 2026
8.58 GWh
Provisional
Range, 2015 to 2025
11.1–17.4
GWh a year. Low 2021, high 2016
| 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 | 355 | Not reported | 1 of 12 |
| 2014 | 15,083 | 20.0% | 12 of 12 |
| 2015 | 14,791 | 19.6% | 12 of 12 |
| 2016 | 17,378 | 23.0% | 12 of 12 |
| 2017 | 14,355 | 19.1% | 12 of 12 |
| 2018 | 13,727 | 18.2% | 12 of 12 |
| 2019 | 13,472 | 17.9% | 12 of 12 |
| 2020 | 13,145 | 17.4% | 12 of 12 |
| 2021 | 11,131 | 14.8% | 12 of 12 |
| 2022 | 12,002 | 15.9% | 12 of 12 |
| 2023 | 12,892 | 17.1% | 12 of 12 |
| 2024 | 13,522 | 17.9% | 12 of 12 |
| 2025 | 13,040 | 17.3% | 12 of 12 |
| 2026 (provisional, partial year) | 8,578 | 19.6% | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 |
|---|---|---|---|
| 1 | Solar Photovoltaic | 8.6 | December 2013 |
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 Onward Energy 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 Indy Solar III
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Questions about Indy Solar III
How much power does Indy Solar III, LLC produce?
Indy Solar III, LLC reported 13,040 MWh (13.0 GWh) of net generation in 2025, a 17.3% capacity factor on 8.6 MW of nameplate capacity. From January to July 2026 it reported 8.58 GWh, which is provisional.
Where is Indy Solar III, LLC?
Indy Solar III, LLC is in Marion County, Indiana, at 39.6594, −86.2597. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Indy Solar III, LLC?
EIA-860M for August 2026 lists Onward Energy as the operator (EIA operator ID 60453). The operator is not always the owner.
When did Indy Solar III, LLC start operating?
Its first generator began operating in December 2013, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page