Tesoro SoCal Cogeneration LLC

This article is part of the Ownership Project at Global Energy Monitor which includes ownership data on Coal Plants, Oil and Gas Plants, Bioenergy Plants, Coal Mines, Iron and Steel Plants, Iron Ore Mines, Cement and Concrete, Chemicals, Oil and NGL Pipelines, and Gas Pipelines,

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Tesoro SoCal Cogeneration LLC is a legal entity registered in Delaware, United States, with headquarters in Texas, United States.

This entity is not publicly listed, and it is not the result of a joint venture.

Also known as: Tesoro SoCal Cogen Company, Watson Cogeneration Company

Table 1: Organization identifiers

ID Scheme	Code	ID data source
Global Energy Monitor (GEM)	E100000004195	–
Global Legal Entity Identifier Index	not found	–
PermID: Refinitiv Permanent Identifier	5042217477	​

Ownership Structure

Direct Ownership

Table 2: Direct ownership

Entity	Percentage / Percentage range
Marathon Petroleum	100.0

Ultimate Beneficial Ownership

Table 3: Ultimate beneficial ownership

GEM ID	Entity	Country
E100001015587	small shareholders	N/A
E100001010595	The Vanguard Group	United States
E100001015833	Blackrock Advisors	United States

Intermediate Entities

Table 4: Intermediary entities

GEM ID	Entity	Country/Area
E100000001254	Marathon Petroleum	United States
E100001000348	BlackRock	United States
E100001010596	State Street	United States

Direct Subsidiaries

Tesoro SoCal Cogeneration does not have any known direct subsidiaries.

Asset Ownership

Table 5: Owned assets

Project	Asset type	Country/Area	Status	GEM tracker
Watson cogeneration power station	Oil & Gas Plant	United States	operating	GOGPT

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Additional data

To access additional data, including a downloadable dataset, summary data, and interactive tools, please visit the Global Energy Ownership Tracker on the Global Energy Monitor website.