Valero Hartley Ethanol Plant
3260 Van Buren Avenue
Hartley, IA 51345
(712) 928-5800, main
(866) 931-CORN (2676), toll-free
(712) 928-5850 fax


Valero's Hartley ethanol plant is located near Hartley, Iowa, about 100 miles east and south of Sioux Falls, South Dakota. The biorefinery sits on approximately 350 acres and started ethanol production in August 2008. The facility uses a dry-grind production method and state-of-the-art technology to maintain industry-leading standards in production, safety, product quality and environmental stewardship. The Hartley plant annually processes approximately 49 million bushels of corn into approximately 140 million gallons of denatured ethanol and 368,000 tons of distillers grains co-products. The biorefinery employs approximately 70 full-time personnel.

The entire kernel of corn is converted to ethanol or distillers grains. Ethanol is an environmentally friendly, high-octane renewable fuel produced by fermenting converted corn starch with yeast. It is used as a blending agent with gasoline. Distillers grains are the co-product left after the ethanol is removed from fermented corn mash, and are sold as a valuable livestock feed. Distillers grains are high in protein, fat, vitamins and minerals, making an excellent feed supplement for beef and dairy cattle, swine and poultry. The Hartley plant markets both dried distillers grains with solubles (DDGS) and modified (or wet) distillers grains with solubles (MDGS).

The plant timeline:
  • August 2006 – Announced plans to build an ethanol facility in O’Brien County
  • November 2006 – Construction began
  • May 2007 – Groundbreaking celebrated
  • June 2008 – Construction completed
  • April 2009 – Valero closed on purchase of the plant from VeraSun Energy

Community Activities

  • Pledged more than $42,000 to the local United Way for 2019, with a company match projected to bring total plant contribution to approximately $64,000
  • Distributed $35,000 to area children’s charities in 2018 from the Valero Texas Open and Benefit for Children, including to Hope Haven, Kaden's Closet and Northwest Iowa Mental Health Center-Camp Autumn
  • Holds volunteer events throughout the year, logging more than 1,600 total employee hours annually

To Sell Corn
Jill Vander Veen
Manager-Grains Procurement
Send Email
(712) 928-5820, or (866) 931-CORN (2676), toll-free
(712) 928-5850, fax

Please be advised that credit sale contracts (also known as price-later contracts) are not valid unless they are signed by the grain seller. Until a signature is provided, such contracts are considered cash contracts and must be cashed out within 30 days of corn delivery. If a grain seller fails to provide a signed contract to VGM within 20 days of corn delivery, VGM will proceed to cash out the contract.

To Purchase Distillers Grains
Bradley Mosher
Distillers Grain Sales Representative (local truck sales)
(712) 928-5824

Judd Hulting
Regional Manager-Ag Products
(210) 345-4343