Western States Petroleum Association (WSPA) is a non-profit trade association

Trade association

A trade association, also known as an industry trade group, business association or sector association, is an organization founded and funded by businesses that operate in a specific industry...

 that represents companies that account for the bulk of petroleum exploration, production, refining, transportation and marketing in the six western states of Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

, Nevada

Nevada

Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

, Oregon

Oregon

Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

 and Washington. Founded in 1907, WSPA is the oldest petroleum trade association in the United States of America. WSPA's headquarters are located in Sacramento, California. Additional WSPA locations include offices in Torrance; Santa Barbara; Bakersfield; Scottsdale, Arizona and Olympia, Washington.

The current WSPA president is Catherine Reheis-Boyd.

Members of the WSPA include Aera Energy LLC

Aera Energy LLC

Aera Energy LLC is a natural gas, oil exploration and production company jointly owned by Shell and ExxonMobil headquartered in Bakersfield, California...

, Alaska Tanker Company, Berry Petroleum, BP

BP

BP p.l.c. is a global oil and gas company headquartered in London, United Kingdom. It is the third-largest energy company and fourth-largest company in the world measured by revenues and one of the six oil and gas "supermajors"...

, Big West of California LLC, Chevron Corporation

Chevron Corporation

Chevron Corporation is an American multinational energy corporation headquartered in San Ramon, California, United States and active in more than 180 countries. It is engaged in every aspect of the oil, gas, and geothermal energy industries, including exploration and production; refining,...

, ConocoPhillips

ConocoPhillips

ConocoPhillips Company is an American multinational energy corporation with its headquarters located in the Energy Corridor district of Houston, Texas in the United States...

, ExxonMobil

ExxonMobil

Exxon Mobil Corporation or ExxonMobil, is an American multinational oil and gas corporation. It is a direct descendant of John D. Rockefeller's Standard Oil company, and was formed on November 30, 1999, by the merger of Exxon and Mobil. Its headquarters are in Irving, Texas...

, Lloyd Properties, Navajo Refining Co., Noble Energy

Noble Energy

Noble Energy, Inc. of Houston, Texas, United States is the modern name of Noble Affiliates Inc., by which it was known through the 1990s, and it is now an oil and natural gas exploration and production company with almost US$3 billion in revenue at #660 on the 2007 Fortune 1000 list of the largest...

, Olympic Pipeline Company, Occidental Petroleum

Occidental Petroleum

Occidental Petroleum Corporation is a California-based oil and gas exploration and production company with operations in the United States, the Middle East, North Africa, and South America...

, Pacific Operators Offshore, Plains All American, SeaRiver Maritime

SeaRiver Maritime

SeaRiver Maritime is a privately held subsidiary wholly owned by ExxonMobil. The company was formed in the early 1990s by Exxon when it spun off its maritime operations into the new company following the Exxon Valdez oil spill in 1989....

, Seneca Resources Corp., Shell

Shell Oil Company

Shell Oil Company is the United States-based subsidiary of Royal Dutch Shell, a multinational oil company of Anglo Dutch origins, which is amongst the largest oil companies in the world. Approximately 22,000 Shell employees are based in the U.S. The head office in the U.S. is in Houston, Texas...

, Tesoro

Tesoro

Tesoro Corporation is a Fortune 100 and a Fortune Global 500 company headquartered in San Antonio, Texas, with 2008 annual revenues of $28.3 billion, and approximately 5,600 employees....

, U.S. Oil and Refining

U.S. Oil and Refining

U.S. Oil & Refining Co. is an oil refinery located in the tideflats of Tacoma, Washington.-History:USOR was organized in 1952 as a privately held corporation, then named Pacific Oil & Refining Co. The president of the company at that time was Dr. Ernest Lyder. The company was formed for purposes of...

, Valero Energy Corporation, Venoco, and Western Refining

Western Refining

Western Refining Company, L.P. is an independent crude oil refiner and marketer headquartered in El Paso, Texas. Western Refining Company operates primarily in the Southwestern and Mid-Atlantic regions of the United States. Western Refining has been publicly traded on the New York Stock Exchange...

.