Hecate Energy Outpost Solar
Repsol Renewables NAWebb County
Overview
- Registry anchor
- Plant 68838
- plant-68838
Infrastructure record
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
Structured profile
- Technology
- Solar Photovoltaic
- Operator
- Repsol Renewables NA
Generation and physical site
EIA plant 68838 · Inventory for Aug 2026.
Reported operating nameplate by technology
- Solar
- 515 MW
Generator records (1)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| RROS | Solar Photovoltaic | Operating | 515 | Unknown |
- Physical map location · OpenStreetMap
- 27.85570, -99.18538
- Filed location · EIA
- 27.85923, -99.16174
Sources and observation dates
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| RROS | 515 MW 515 MW summer | Solar Photovoltaic Solar · PV | Aug 2025 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 515 MW
- Solar Photovoltaic
- National rank
- #9
- of 7,597 operating peers
- TX rank
- #3
- of 242 operating peers
Monthly generation
Download CSVLatest 12 months
1.23 TWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
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 disclosuresCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Project Proposal
Nov 11, 2021
Hecate Energy Outpost Solar LLC proposed a 514 MWac photovoltaic facility and battery energy storage system on approximately 18,500 acres in Webb County, approximately 30 miles northeast of Laredo, and filed for a tax value limitation with United Independent School District.
Hecate Energy Outpost Solar LLC
Construction Began
2024
Construction on the Outpost solar farm began in late 2024, with Primoris Renewable Energy serving as engineering, procurement and construction (EPC) contractor. More than 1.3 million Siemens solar panels were installed.
Primoris Renewable Energy · Siemens AG
Commercial Operation
Sep 18, 2025
Repsol announced commercial operations at the 629 MW Outpost solar facility in Webb County, Texas, near Laredo. The project is connected to the ERCOT grid and linked to a long-term power purchase agreement (PPA). This is Repsol's fourth utility-scale solar facility in operation in the United States.
Repsol Renewables NA
Ownership Agreement
Dec 11, 2025
Stonepeak agreed to acquire a 43.8% stake in the 629 MW Outpost solar project from Repsol for $252.5 million (€220 million), creating joint control of the project.
$252.5MRepsol Renewables NA · Stonepeak
Ownership Closing
Feb 4, 2026
The sale of a 43.8% interest in the 629 MW operating Outpost solar project to Stonepeak closed after satisfaction of conditions precedent. Consideration was $253 million; the companies jointly control the holding company.
$253.0MRepsol Renewables NA · Stonepeak
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.
Parties and identifiers
OUTP_SLR_UNIT1, OUTP_SLR_UNIT2Market resourcesLinked ERCOT resources.
Reporting portfolio
Operating portfolio
5 plants
2 states
Reported capacity
1,785 MW
Batteries · Solar Photovoltaic
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Hecate Energy Longhorn Solar LLC | |||
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Project Proposal and Tax-Incentive Applicationassets.comp...
Hecate Energy Outpost Solar LLC proposed a 514 MWac photovoltaic facility and battery energy storage system on approximately 18,500 acres in Webb County, approximately 30 miles northeast of Laredo, and filed for a tax value limitation with United Independent School District.