Grays Harbor Biorefinery

REG Grays Harbor is a biorefinery in the town of Hoquiam in western Washington State. It has a nameplate capacity of approximately 100 million gallons of high-quality biodiesel per year. The facility began operations in 2007, and REG acquired it in 2015.

  • Nameplate capacity: 100 mmgy
  • Feedstocks: Low free fatty acid feedstocks
  • Loading capabilities: Truck, rail, barge and deep-water vessel
  • Rail line: Puget Sound & Pacific
  • Production start date: August 2007
REG Grays Harbor Plan


2850 John Stevens Way
Hoquiam, WA 98550

Hours of Operation

Loading: 24 hours a day, 7 days a week
Office: Monday – Friday: 7:30 a.m. – 5 p.m. PT
Loading appointment required: No
Contact: [email protected] 
Phone: 360-500-4230

About Hoquiam

Hoquiam is home to more than 8,000 residents and is located on the west coast of Washington. The Port of Grays Harbor is the only deep-water port on the Pacific Ocean north of San Francisco. Residents and visitors take advantage of the proximity to the Pacific; the Grays Harbor National Wildlife Refuge, which attracts hundreds of thousands of shorebirds during their spring and fall migrations; and the Grays Harbor Farmers Market and Craft Fair, one of only two Washington State farmers markets open year-round.