Marathon Bay Area Cogen
550 Solano Way, Martinez, CA 94553Plant Summary Information
Marathon Bay Area Cogen is ranked #34 out of 316 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 161.0 GWh during the 3-month period between February 2026 to May 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 | May 2026 |
| Annual Generation | 595.6 GWh |
| Annual Consumption | 7.4 M MMBtu |
| Ranked #1,154 out of 13,081 Power Plants Nationwide | |
| Ranked #525 out of 2,206 Natural Gas Power Plants Nationwide | |
| Ranked #60 out of 1,606 California Power Plants | |
| Ranked #34 out of 316 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) |
Map of Marathon Bay Area Cogen
Full Screen MapRegister Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Marathon Bay Area Cogen.
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 May 2026 |
| Initial Operation Date | February 1987 |
| Annual Generation | 595.6 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 |
|---|---|---|---|
| #515 | Freeport LP Pretreatment Facility | Freeport, TX | 623.7 GWh |
| #516 | Nebo Power Station | Payson, UT | 622.1 GWh |
| #517 | Morris Cogeneration LLC | Morris, IL | 621.2 GWh |
| #518 | Anadarko Plant | Anadarko, OK | 615.9 GWh |
| #519 | Horseshoe Lake | Harrah, OK | 614.9 GWh |
| #520 | JM Shafer Generating Station | Ft. Lupton, CO | 613.9 GWh |
| #521 | RockGen Energy Center | Cambridge, WI | 624.8 GWh |
| #522 | Louisa Generation Facility | Gordonsville, VA | 646.1 GWh |
| #523 | Kennedy International Airport Cogen | Jamaica, NY | 609.1 GWh |
| #524 | Roseton Generating Facility | Newsburgh, NY | 795.9 GWh |
| #526 | Naughton | Kemmerer, WY | 1.7 TWh |
| #527 | R W Miller | Palo Pinto, TX | 586.3 GWh |
| #528 | Shell Chemical | Geismar, LA | 585.3 GWh |
| #529 | R D Green | Robards, KY | 580.7 GWh |
| #530 | SABIC Innovative Plastics Mt. Vernon | Mount Vernon, IN | 579.6 GWh |
| #531 | Oleander Power Project LP | Cocoa, FL | 579.6 GWh |
| #532 | NAFTA Region Olefins Complex Cogen Fac | Port Arthur, TX | 577.5 GWh |
| #533 | Ocean State Power II | Harrisville, RI | 576.9 GWh |
| #534 | Bethpage Power Plant | Hicksville, NY | 573.5 GWh |
| #535 | JCO Oxides Olefins Plant | Port Neeches, TX | 569.5 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 |
| Bio-Rad | Hercules, CA | 3.2 GWh | 11.7 mi |
| C&H Sugar Plant | Crockett, CA | 40.5 GWh | 9 mi |
| CCCSD Wastewater Treatment Plnt | Martinez, CA | 20.2 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 | 1.3 TWh | 8.8 mi |
| Delta Energy Center | Pittsburg, CA | 3.5 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 | 2.7 TWh | 10.1 mi |
| Martinez Refining | Martinez, CA | 668.8 GWh | 2.9 mi |
| Martinez Sulfuric Acid Regeneration Plt | Martinez, CA | 13.4 GWh | 3 mi |
| P66 Rodeo Solar | Rodeo, CA | 58.0 GWh | 10.3 mi |
| Potrero Hills Energy Producers | Suisun City, CA | 55.9 GWh | 14 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 |