ExxonMobil Baytown Refinery
Exxon Mobil CorporationHarris County
Industrial combined-heat-and-power facility at ExxonMobil's Baytown Refinery in Baytown, Harris County, Texas, approximately 25 miles east of Houston. The plant comprises seven operating generators totaling 209.3 MW nameplate capacity: one 7.5 MW waste-heat steam turbine (ST34, operating since January 1952) and six natural-gas combustion turbines comprising four 27.6 MW units (GT41–GT44, operating since January 1977) and two 45.7 MW units (GT45 operating since June 1988, GT38 operating since August 1989). The facility operates in a topping-cycle cogeneration configuration, generating electricity for the integrated Baytown refining and petrochemical complex while utilizing waste heat for steam production. Excess power is sold into the ERCOT wholesale market.
EIA plant 10436 · Inventory reporting month unavailable.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| GT38 | Natural Gas Fired Combustion Turbine | Operating | 45.7 | Unknown |
| GT41 | Natural Gas Fired Combustion Turbine | Operating | 27.6 | Unknown |
| GT42 | Natural Gas Fired Combustion Turbine | Operating | 27.6 |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GT38 | 45.7 MW 31 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Aug 1989 | Operating |
| GT41 | 27.6 MW 18 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jan 1977 | Operating |
| GT42 | 27.6 MW 18 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jan 1977 | Operating |
| GT43 | 27.6 MW 18 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jan 1977 | Operating |
| GT44 | ||||
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
Humble Oil & Refining Company of Texas began construction of the Baytown refinery, originally planned as a lubricant plant with a capacity of 260,000 barrels daily.
| Unknown |
| GT43 | Natural Gas Fired Combustion Turbine | Operating | 27.6 | Unknown |
|---|
| GT44 | Natural Gas Fired Combustion Turbine | Operating | 27.6 | Unknown |
|---|
| GT45 | Natural Gas Fired Combustion Turbine | Operating | 45.7 | Unknown |
|---|
| ST34 | All Other | Operating | 7.5 | Unknown |
|---|
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
2 ERCOT market resources · Renewable, Gas turbine
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at EXN_8 over 365 days (2025-10-17 to 2026-10-16).
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| ExxonMobil Baytown Turbine | 381.8 MW | TX | |
| ExxonMobil Baytown RefineryCurrent | 209.3 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioThe Baytown refinery opens and begins operations.
EIA-860 lists generator ST34 with this operating date.
Standard Oil of New Jersey increased its Humble Oil & Refining Company holdings to approximately 98% of stock.
Humble Oil & Refining Company of Texas and Standard Oil of New Jersey consolidated domestic operations. Humble received a new charter from the state of Delaware in September 1959.
EIA-860 lists generator GT41, generator GT42, generator GT43, generator GT44 with this operating date.
EIA-860 lists generator GT45 with this operating date.
EIA-860 lists generator GT38 with this operating date.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
ExxonMobil Baytown Refinery reports 201.8 MW natural gas + 7.5 MW other of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Form 860M.
ExxonMobil Baytown Refinery is a All Other, Natural Gas Fired Combustion Turbine facility in Harris County, TX, participating in the ERCOT market.
ExxonMobil Baytown Refinery is in Harris County, TX, inside the ERCOT balancing area.
ExxonMobil Baytown Refinery is operated by Exxon Mobil Refining and Supply Co. according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
ExxonMobil Baytown Refinery reported 1,240.3 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
By capacity, ExxonMobil Baytown Refinery ranks #249 of 829 operating plants of the same technology nationally. It ranks #34 of 78 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.