Prospero Solar II
Longroad Energy · Andrews County · ERCOT
Prospero Solar II is a 250 MWac / 331 MWdc photovoltaic facility in Andrews County, Texas. EIA's May 2026 inventory lists one operating generator under Plant ID 64325, with service beginning in August 2021 and Prospero Solar II LLC as the registered operator. Longroad Energy reports that it owns and operates the project, which covers more than 2,670 acres and was financed as an approximately $320 million investment. DaVita and Zimmer Biomet contracted for output under 15-year power-purchase agreements.
Overview
Key fields
- Reported capacity
- 250 MW
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
- Operating capacity
- 250 MWac
EIA May 2026
- DC rating
- 331 MWdc
Longroad Energy
- Project investment
- ~$320M
Longroad Energy
- Settlement point
- PRSPERO2_ALL
ERCOT settlement point.
- Registry anchor
- Plant 64325
Prospero Solar II LLC
Resource stack
- 2 resources
PRSPERO2_UNIT1 · PRSPERO2_UNIT2
Profile
- Grid role
- Utility-scale solar generation in ERCOT.
- Capacity
- 250 MWac EIA nameplate · 331 MWdc project rating.
- Ownership and operations
- Longroad Energy reports that it owns and operates Prospero Solar II.
- Commercial structure
- Approximately $320 million project investment · 15-year PPAs with DaVita and Zimmer Biomet.
Equipment layout
Equipment field view for comparing module and inverter scale. Not a site map.
Structured profile
- Operating capacity
- 250 MWac
EIA May 2026
- DC rating
- 331 MWdc
Longroad Energy
- Owner and operator
- Longroad Energy
Official project page
- Power purchasers
- DaVita · Zimmer Biomet
15-year agreements
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| PROSP | 250 MW 250 MW summer | Solar Photovoltaic Solar · PV | Aug 2021 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 250 MW
- National rank
- #76
- TX rank
- #33
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
ERCOT disclosed dispatch
2 ERCOT market resources · Solar
Generation
3 mo through May 22, 2026Capacity factor is average output vs. this plant's observed peak.
Output by hourlocal time · 90 days through May 22, 2026
Latest disclosed outputhourly · 2 weeks ending May 22, 2026
Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
ERCOT public disclosuresOperating context
ERCOT market recordsInterconnection record
ERCOT GIS ReportMatched to the latest available ERCOT generation-interconnection queue record. Queue status and completion dates describe the queue record; operating status is verified separately against plant and market registrations.
Nearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Financing
Land and environmental record
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Project company and EIA registered operator | Prospero Solar II LLC | EIA May 2026 generator inventory |
| Portfolio lead lending and tax-equity partner | Financing covers a portfolio that includes Prospero Solar II. | |
| Portfolio lead lending and tax-equity partner | Financing covers a portfolio that includes Prospero Solar II. | |
| Long-term power purchaser | Longroad Energy Prospero II project page | |
| Long-term power purchaser | Longroad Energy Prospero II project page | |
| Market resources | PRSPERO2_UNIT1, PRSPERO2_UNIT2 | Linked ERCOT resources. |
| Grid selection | plant:plant-64325 | Canonical asset page /ercot/assets/plant/prospero-solar-ii. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Project Financing AnnouncedLongroad En...
Longroad announced financing for the approximately $320 million project.
- Project Entered ServiceEIA May 202...
EIA reports August 2021.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
Related assets
Similar plants ranked by technology, capacity, and distance.