Marathon Bay Area Cogen
550 Solano Way, Martinez, CA 94553Plant Summary Information
Marathon Bay Area Cogen is ranked #34 out of 317 natural gas power plants in California in terms of total annual net electricity generation.
Marathon Bay Area Cogen is comprised of 3 generators and generated 166.5 GWh during the 3-month period between May 2026 to August 2026.
| Plant Name | Marathon Bay Area Cogen |
|---|---|
| Utility Name | Tesoro Marketing & Refining Co. LLC (Martinez) |
| Location | Contra Costa County, CA |
| Initial Operation Date | February 1987 |
| Last Update | Aug 2026 |
| Annual Generation | 598.3 GWh |
| Annual Consumption | 7.5 M MMBtu |
| Ranked #1,172 out of 13,301 Power Plants Nationwide | |
| Ranked #522 out of 2,218 Natural Gas Power Plants Nationwide | |
| Ranked #61 out of 1,641 California Power Plants | |
| Ranked #34 out of 317 California Natural Gas Power Plants | |
| Fuel Types | Natural Gas |
| Previous Operator |
Foster Wheeler Power Sys Inc (2013 to 2020) Tesoro Marketing & Refining Co. LLC (Martinez) (2021 to 2025) |
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Monthly Net Generation for Marathon Bay Area Cogen
Monthly Plant Fuel Consumption for Marathon Bay Area Cogen
Marathon Bay Area Cogen Details
| Summary Information | |
|---|---|
| Plant Name | Marathon Bay Area Cogen (10342) |
| Plant Address | 550 Solano Way, Martinez, CA 94553 |
| Utility | Tesoro Marketing & Refining Co. LLC (Martinez) (65130) |
| Latitude, Longitude | 38.0244, -122.0589 |
| Generation Dates on File | Jan 2001 to Aug 2026 |
| Initial Operation Date | February 1987 |
| Annual Generation | 598.3 GWh |
| Fuel Types | Natural Gas |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | Yes |
| FERC Cogeneration Docket Number | 85-302-000 |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | WECC |
| Balancing Authority | California Independent System Operator (CISO) |
| NAICS Code | Utilities (22) |
| Sector | IPP CHP (3) |
| Water Source | Wells |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Pacific Gas & Electric Co (14328) CA |
| Grid Voltage | 230.00 kV |
| Energy Storage | No |
| Natural Gas Information | |
| Pipeline Name | PACIFIC GAS |
| Natural Gas Storage | No |
Generator TG1 Details Operating February 1987
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Combustion Turbine Part |
| Unit Code | CC1 |
| Ownership | Wholly Owned by Other Entity |
| Can Bypass Heat Recovery Steam Generator | No |
| RTO ISO LMP Node Designation | FOSTERW_7_N004 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | TH_NP15_GEN-APND |
| Nameplate Capacity | 40 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 35 MW |
| Winter Capacity | 37 MW |
| Minimum Load | 29 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | February 1987 |
| Combined Heat & Power | Yes |
| Sector Name | IPP CHP (3) |
| Topping Or Bottoming | T |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator TG2 Details Operating February 1987
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Combustion Turbine Part |
| Unit Code | CC1 |
| Ownership | Wholly Owned by Other Entity |
| Can Bypass Heat Recovery Steam Generator | No |
| RTO ISO LMP Node Designation | FOSTERW_7_N004 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | TH_NP15_GEN-APND |
| Nameplate Capacity | 40 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 35 MW |
| Winter Capacity | 37 MW |
| Minimum Load | 29 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | February 1987 |
| Combined Heat & Power | Yes |
| Sector Name | IPP CHP (3) |
| Topping Or Bottoming | T |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator TG3 Details Operating February 1987
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Steam Part |
| Unit Code | CC1 |
| Ownership | Wholly Owned by Other Entity |
| Duct Burners | No |
| RTO ISO LMP Node Designation | FOSTERW_7_N004 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | TH_np15_GEN-APND |
| Nameplate Capacity | 33.5 MW |
| Nameplate Power Factor | 0.8 |
| Summer Capacity | 33.5 MW |
| Winter Capacity | 33.5 MW |
| Minimum Load | 5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | February 1987 |
| Combined Heat & Power | Yes |
| Sector Name | IPP CHP (3) |
| Topping Or Bottoming | T |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Marathon Bay Area Cogen Plant Owners
| Owner Name | Address | Generator | Ownership |
|---|---|---|---|
| Tesoro Refining and Marketing Co LLC | 19100 Ridgewood Parkway, San Antonio, TX 78259 | Generator TG1 | 100.00% |
| Tesoro Refining and Marketing Co LLC | 19100 Ridgewood Parkway, San Antonio, TX 78259 | Generator TG2 | 100.00% |
| Tesoro Refining and Marketing Co LLC | 19100 Ridgewood Parkway, San Antonio, TX 78259 | Generator TG3 | 100.00% |
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Natural Gas.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #512 | T H Wharton | Houston, TX | 637.4 GWh |
| #513 | Martinez Refining | Martinez, CA | 658.2 GWh |
| #514 | Greenidge Generation LLC | Dresden, NY | 624.9 GWh |
| #515 | Freeport LP Pretreatment Facility | Freeport, TX | 623.7 GWh |
| #516 | Morris Cogeneration LLC | Morris, IL | 613.1 GWh |
| #517 | Louisa Generation Facility | Gordonsville, VA | 646.1 GWh |
| #518 | Kennedy International Airport Cogen | Jamaica, NY | 609.1 GWh |
| #519 | Gregory Power Plant | Gregory, TX | 604.4 GWh |
| #520 | AES Petersburg | Petersburg, IN | 4.1 TWh |
| #521 | Desert Star Energy Center | Boulder City, NV | 599.8 GWh |
| #523 | RockGen Energy Center | Cambridge, WI | 597.7 GWh |
| #524 | Plant X | Earth, TX | 585.8 GWh |
| #525 | Shell Chemical | Geismar, LA | 585.3 GWh |
| #526 | Axiall Natrium Plant | New Martinsville, WV | 594.0 GWh |
| #527 | SABIC Innovative Plastics Mt. Vernon | Mount Vernon, IN | 579.7 GWh |
| #528 | Oleander Power Project LP | Cocoa, FL | 579.6 GWh |
| #529 | NAFTA Region Olefins Complex Cogen Fac | Port Arthur, TX | 577.5 GWh |
| #530 | Ocean State Power II | Harrisville, RI | 576.9 GWh |
| #531 | JCO Oxides Olefins Plant | Port Neeches, TX | 569.5 GWh |
| #532 | Gerald Andrus | Greenville, MS | 566.8 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Marathon Bay Area Cogen.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Ameresco Keller Canyon | Bay Point, CA | 15.8 GWh | 6.9 mi |
| American Canyon Solar | American Canyon, CA | 6.0 GWh | 12.7 mi |
| Bear Creek Solar (Orinda) | Orinda, CA | 7.4 GWh | 10 mi |
| Bio-Rad | Hercules, CA | 3.2 GWh | 11.7 mi |
| C&H Sugar Plant | Crockett, CA | 36.4 GWh | 9 mi |
| CCCSD Wastewater Treatment Plnt | Martinez, CA | 20.0 GWh | 1.9 mi |
| Central San | Martinez, CA | 3.0 GWh | 1.6 mi |
| Columbia Solar Energy, LLC | Pittsburg, CA | 11.9 GWh | 10.6 mi |
| Crockett Cogen Project | Crockett, CA | 639.9 GWh | 8.8 mi |
| Delta Energy Center | Pittsburg, CA | 3.4 TWh | 11.7 mi |
| EDF Renewable Windfarm V Inc | Birds Landing, CA | 22.9 GWh | 13.8 mi |
| Lake Herman | Benicia, CA | 8.0 GWh | 6.7 mi |
| Los Medanos Energy Center | Pittsburg, CA | 2.6 TWh | 10.1 mi |
| Martinez Refining | Martinez, CA | 658.2 GWh | 2.9 mi |
| Martinez Sulfuric Acid Regeneration Plt | Martinez, CA | 13.4 GWh | 3 mi |
| P66 Rodeo Solar | Rodeo, CA | 56.9 GWh | 10.3 mi |
| SFDK Solar | Vallejo, CA | 10.0 GWh | 12 mi |
| Shiloh I Wind Project | Rio Vista, CA | 400.0 GWh | 13.1 mi |
| Shiloh IV Wind Project LLC | Birds Landing, CA | 292.8 GWh | 13.6 mi |
| Valero Refinery Cogeneration Unit 1 | Benicia, CA | 236.7 GWh | 5.6 mi |