PEIX Alto Ingredients Inc

Pacific Ethanol, Inc. (Nasdaq:PEIX), the leading producer and marketer of low-carbon renewable fuels in the Western United States, announced it will release its first-quarter 2015 financial results after the market closes on Monday, May 11, 2015. Management will host a conference call at 8:00 a.m. Pacific Time / 11:00 a.m. Eastern Time on Tuesday, May 12, 2015. Neil Koehler, Chief Executive Officer, and Bryon McGregor, Chief Financial Officer, will deliver prepared remarks via webcast followed by a question and answer session.

The webcast for the call can be accessed from Pacific Ethanol's website at www.pacificethanol.com. Alternatively, you may dial the following number up to ten minutes prior to the scheduled conference call time: (877) 847-6066. International callers should dial 00-1-(970) 315-0267. The pass code will be 32277644#. If you are unable to participate on the live call, the webcast will be archived for replay on Pacific Ethanol's website for one year. In addition, a telephonic replay will be available at 2:00 p.m. Eastern Time on Tuesday, May 12, 2015 through 11:59 p.m. Eastern Time on Tuesday, May 19, 2015. To access the replay, please dial (855) 859-2056. International callers should dial 00-1-(404) 537-3406. The pass code will be 32277644#.

About Pacific Ethanol, Inc.

Pacific Ethanol, Inc. (PEIX) is the leading producer and marketer of low-carbon renewable fuels in the Western United States. Pacific Ethanol also sells co-products, including wet distillers grain ("WDG"), a nutritional animal feed. Serving integrated oil companies and gasoline marketers who blend ethanol into gasoline, Pacific Ethanol provides transportation, storage and delivery of ethanol through third-party service providers in the Western United States, primarily in California, Arizona, Nevada, Utah, Oregon, Colorado, Idaho and Washington. Pacific Ethanol has a 96% ownership interest in PE Op Co., the owner of four ethanol production facilities. Pacific Ethanol operates and manages the four ethanol production facilities, which have a combined annual production capacity of 200 million gallons. These operating facilities are located in Boardman, Oregon, Burley, Idaho, Stockton, California and Madera, California. The facilities are near their respective fuel and feed customers, offering significant timing, transportation cost and logistical advantages. Pacific Ethanol's subsidiary, Kinergy Marketing LLC, markets ethanol from Pacific Ethanol's managed plants and from other third-party production facilities, and another subsidiary, Pacific Ag. Products, LLC, markets WDG. For more information please visit www.pacificethanol.com.

CONTACT: Company IR Contact:
         Pacific Ethanol, Inc.
         916-403-2755
         844-403-2755
         Investorrelations@pacificethanol.com
         
         IR Agency Contact:
         Becky Herrick
         LHA
         415-433-3777
         
         Media Contact:
         Paul Koehler
         Pacific Ethanol, Inc.
         916-403-2790
         paulk@pacificethanol.com