Santa Maria Refinery


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(805) 343-1776

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The 1,780-acre Santa Maria Refinery, located adjacent to State Highway 1 on the Nipomo Mesa, has been in operation for nearly 60 years. Only about 200 acres, or roughly 11 percent of the land, is used for company operations. The remainder is grazed by cattle, held as open space or used as a preservation area for wildlife in the Nipomo Dunes.

As an important part of California's energy infrastructure, our refinery processes about 44,500 barrels of crude oil per day. The facility is also an important part of the local economy, employing 140 full-time Phillips 66 workers as well as our specialized contractors. We continually reinvest in and upgrade our facility to utilize changing technologies that generate safe and environmentally sound operations.

Our primary function at the Santa Maria refining facility is to convert heavy crude oil into high quality feedstock for further processing into gasoline, diesel and jet fuel. Crude oil is brought by pipeline into the facility from suppliers all over California's Central Coast region. The high quality feedstock produced at Santa Maria is sent by pipeline to our refining facility in Rodeo, CA for finishing into marketable petroleum products.

Our only finished products are petroleum coke (carbon) and sulfur. In fact, many local stores in San Luis Obispo County sell fertilizer made from our sulfur. Petroleum coke is used for a variety of purposes including phosphorus production, metals extraction and fuel.


An Integral Part of the Community

Maria Refinery is passionate about local causes in the areas of education, public safety and environmental causes. We commit funds to local organizations and our employees step up as active volunteers. You'll see us at Nipomo High School football games, picking up trash on the Mesa and sponsoring women's basketball programs at Cuesta College. The Santa Maria Refinery's staff helps with chamber of commerce programs, toy drives and fundraisers. We are part of the community, and we use our time and funds to improve lives here.

Arroyo Grande High School
California Polytechnic State University
Cuesta College
Dana Elementary School
Mesa Middle School
Special Olympics
San Luis Obispo County YMCA
Derricks to Desks Program
American Red Cross
American Youth Soccer Organizations
Boys and Girls Campfire Association
Lucia Mar Unified School District
Nipomo Chamber of Commerce
Nipomo High School
Arroyo Grande Chamber of Commerce
Nipomo Football League ​
​Orcutt Basketball League
Orcutt Youth Softball
Pacific Wildlife Care
Santa Maria Girls Softball
The Dunes Center
Five Cities Youth Basketball
Santa Maria Valley Economic
Development Association
San Luis Obispo Literacy Council
Santa Barbara MS Bike
Tour & Fest
Santa Maria Valley Discovery Museum
Start to Finish Multiple Sclerosis
Bike Tour
Adopt-A-Highway Clean Up Program
Salmon Enhancement