Prospero Solar II
Solar power plant in Andrews County, Texas. 250 MW of nameplate capacity across 1 generator, operated by Prospero Solar II, LLC (Longroad).
Also known as EIA plant 64325
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 250 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- August 2021First generator online
- Operator
- Prospero Solar II, LLC (Longroad)EIA operator ID 65896
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 1 ERCOT nodeResource nodes with prices
- Location
- Andrews County, TX32.2758, −102.8448
- EIA plant ID
- 64325EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Prospero Solar II produces
Free · EIA-923Net generation, 2025
667 GWh
667,046 MWh, final
Capacity factor, 2025
30.5%
2024: 31.0%
January to July 2026
403 GWh
Provisional
Range, 2022 to 2025
554.7–680.6
GWh a year. Low 2022, high 2024
| 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 | 199,041 | Not reported | 5 of 12 |
| 2022 | 554,673 | 25.3% | 12 of 12 |
| 2023 | 672,147 | 30.7% | 12 of 12 |
| 2024 | 680,602 | 31.0% | 12 of 12 |
| 2025 | 667,046 | 30.5% | 12 of 12 |
| 2026 (provisional, partial year) | 402,804 | 31.7% | 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 · ERCOTEmissions
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 |
|---|---|---|---|
| PROSP | Solar Photovoltaic | 250.0 | August 2021 |
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 Prospero Solar II, LLC (Longroad) 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.
300 analyst questions a month, plus MCP
Query Prospero Solar II and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Prospero Solar II
Questions about Prospero Solar II
How much power does Prospero Solar II produce?
Prospero Solar II reported 667,046 MWh (667 GWh) of net generation in 2025, a 30.5% capacity factor on 250 MW of nameplate capacity. From January to July 2026 it reported 403 GWh, which is provisional.
Where is Prospero Solar II?
Prospero Solar II is in Andrews County, Texas, at 32.2758, −102.8448. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Prospero Solar II?
EIA-860M for August 2026 lists Prospero Solar II, LLC (Longroad) as the operator (EIA operator ID 65896). The operator is not always the owner.
When did Prospero Solar II start operating?
Its first generator began operating in August 2021, according to EIA-860M.
Does InfraMap have power prices for Prospero Solar II?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 1 price node linked to Prospero Solar II, 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)
- ERCOT 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