Sun Valley Solar Project
ENGIE · Hill County · ERCOT
Sun Valley Solar Project is a 250 MW photovoltaic facility in Hill County, Texas. EIA's May 2026 inventory lists one operating generator under Plant ID 65303, with service beginning in December 2022 and Sun Valley Solar LLC as the registered operator. ENGIE developed the solar project and contracted 200 MW of output to Procter & Gamble. A separate 100 MW / 100 MWh battery was commissioned at the site in December 2023; its energy capacity is not part of the solar plant's EIA record.
Overview
Key fields
- Solar capacity
- 250 MW
EIA May 2026
- Contracted solar
- 200 MW
Procter & Gamble
- Co-located battery
- 100 MW / 100 MWh
Separate asset
- Registry anchor
- Plant 65303
Sun Valley Solar LLC
Resource stack
- 4 resources
SUNVASLR_ESR1 · SUNVASLR_ESR2
Profile
- Grid role
- Utility-scale solar generation in ERCOT.
- Solar record
- 250 MW photovoltaic plant · Dec 2022 EIA service month.
- Power purchase
- Procter & Gamble contracted 200 MW from the solar project.
- Co-located storage
- Separate 100 MW / 100 MWh battery commissioned in Dec 2023.
Structured profile
- Solar capacity
- 250 MW
EIA May 2026
- Project company
- Sun Valley Solar LLC
EIA
- Developer
- ENGIE
Official project record
- Solar power purchaser
- Procter & Gamble · 200 MW
ENGIE
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| SUNS | 250 MW 250 MW summer | Solar Photovoltaic Solar · PV | Dec 2022 | 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
4 ERCOT market resources · Battery / storage, Solar
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.
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 | Sun Valley Solar LLC | EIA May 2026 generator inventory |
| Developer and project sponsor | ENGIE Sun Valley project page | |
| Market resources | SUNVASLR_ESR1, SUNVASLR_ESR2, SUNVASLR_UNIT1, SUNVASLR_UNIT2 | Linked ERCOT resources. |
| Grid selection | plant:plant-65303 | Canonical asset page /ercot/assets/plant/sun-valley-solar-project. |
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
- P&G Agreement AnnouncedENGIE Sun V...
ENGIE announced a 200 MW agreement with Procter & Gamble.
- Solar plant entered serviceEIA May 202...
EIA reports December 2022.
- Co-Located Battery CommissionedENGIE Sun V...
ENGIE commissioned a separate 100 MW / 100 MWh battery at the site.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
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