Green Power 2
Marathon Petroleum · Galveston County · ERCOT
Green Power 2 is an industrial combined-heat-and-power facility at the Galveston Bay refinery complex in Texas City, Texas. EIA's May 2026 inventory lists five combined-cycle generator records totaling 861 MW nameplate, 624 MW net summer, and 645 MW net winter capability. Four records are operating; ST805 is out of service and not expected to return within the next calendar year. Excluding ST805, the four operating records total 611 MW nameplate, 549 MW net summer, and 570 MW net winter capability.
Overview
Key fields
- Operating net summer
- 549 MW
Four operating EIA records
- Operating nameplate
- 611 MW
Excludes ST805
- Inventory net summer
- 624 MW
All five EIA records
- Inventory nameplate
- 861 MW
Includes out-of-service ST805
- Out-of-service record
- ST805
250 MW nameplate · 75 MW summer
- Registry anchor
- Plant 55470
South Houston Green Power LLC
Profile
- Grid role
- Industrial combined heat and power at the Galveston Bay refinery complex.
- Operating configuration
- Four operating EIA records total 611 MW nameplate; a fifth 250 MW record, ST805, is currently out of service.
- Capacity scope
- All five records total 861 MW nameplate and 624 MW net summer; currently operating records total 611 MW nameplate and 549 MW net summer.
- Market mapping
- ERCOT's current public list includes AMOCOOIL_CC1 and AMOCOOIL_CC2 plus related AMOCO unit and PUN points.
Structured profile
- Operating net summer
- 549 MW
Four operating EIA records
- Operating nameplate
- 611 MW
Excludes ST805
- Inventory net summer
- 624 MW
All five EIA records
- Inventory nameplate
- 861 MW
Includes ST805
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| ST1 | 110 MW 75 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Dec 2003 | Operating |
| ST805 | 250 MW 75 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | May 2009 | Operating |
| TR1 | 167 MW 158 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Dec 2003 | Operating |
| TR2 | 167 MW 158 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Dec 2003 | Operating |
| TR3 | 167 MW 158 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Dec 2003 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 861 MW
- National rank
- #127
- TX rank
- #21
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.
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.
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 |
|---|---|---|
| Owner | South Houston Green Power | Owner for Green Power 2 |
| Operator | South Houston Green Power | Operator for Green Power 2 |
| Grid selection | plant:plant-55470 | Canonical asset page /ercot/assets/plant/green-power-2. |
Reporting portfolio
| Largest reported plants | Capacity | State |
|---|---|---|
| Green Power 2Current | 611 MW | TX |
| Power Station 4 | 156.4 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolio