Lake Hubbard
Luminant · Dallas County · ERCOT
Lake Hubbard Steam Electric Station is a two-unit natural-gas steam station in Sunnyvale, Dallas County, Texas. EIA's May 2026 inventory reports 927.5 MW nameplate and 915 MW net summer and winter capability. ERCOT's September 2026 resource outlook separately lists LHSES_UNIT1 and LHSES_UNIT2A at 928 MW installed and 915 MW seasonal capability in the North zone.
Overview
Key fields
- Net summer capacity
- 915 MW
EIA May 2026 · two operating units
- Nameplate capacity
- 927.5 MW
396.5 MW · 531 MW
- ERCOT installed
- 928 MW
September 2026 MORA
- Resources
- 2
LHSES_UNIT1 · LHSES_UNIT2A
- Registry anchor
- Plant 3452
Luminant Generation Company LLC · ERCOT
Resource stack
- 2 resources
LHSES_UNIT1 · LHSES_UNIT2A
Profile
- Grid role
- Dispatchable natural-gas steam generation in ERCOT's North zone.
- Current configuration
- Two operating steam units: 396.5 MW and 531 MW nameplate, with 392 MW and 523 MW net summer capability.
- Market mapping
- Resources LHSES_UNIT1 and LHSES_UNIT2A; price nodes LHSES_UNIT1 and LHSES_UNIT2.
- Environmental record
- TCEQ RN100673490; Federal Operating Permit O50; wastewater permit WQ0001245000.
Structured profile
- Operating units
- 2
June 1970 · November 1973
- ERCOT zone
- North
GAS-ST resources
- TCEQ entity
- RN100673490
Federal Operating Permit O50
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 396.5 MW 392 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Jun 1970 | Operating |
| 2 | 531 MW 523 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Nov 1973 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 927.5 MW
- National rank
- #30
- TX rank
- #6
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 · Gas steam
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 recordsNearby 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 |
|---|---|---|
| Market resources | LHSES_UNIT1, LHSES_UNIT2A | Linked ERCOT resources. |
| Grid selection | plant:plant-3452 | Canonical asset page /ercot/assets/plant/lake-hubbard. |
Reporting portfolio
| Largest reported plants | Capacity | State |
|---|---|---|
| Comanche Peak | 2,430 MW | TX |
| Martin Lake | 2,379.6 MW | TX |
| Oak Grove (TX) | 1,795.4 MW | TX |
| Lake HubbardCurrent | 927.5 MW | TX |
| Stryker Creek | 713.4 MW | TX |
| Graham | 634.7 MW | TX |
| DeCordova Steam Electric Station | 626.7 MW | TX |
| Morgan Creek | 536.4 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioTimeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Unit 1 began operatingEIA May 202...
EIA reports June 1970 for the 396.5 MW nameplate steam unit.
- Unit 2 began operatingEIA May 202...
EIA reports November 1973 for the 531 MW nameplate steam unit.
- O50 minor-revision statement preparedLake Hubbar...
TCEQ's statement of basis identifies Luminant as applicant and Lake Hubbard as the exact permitted site.
- TCEQ agreed order became effectiveLake Hubbar...
The 2024 compliance-history report records an agreed order effective February 25, 2025.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
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