POET Biorefining
Agriculture Sioux Falls, SD · Private
POET is the largest US ethanol producer with 35 bioprocessing facilities across nine states, generating approximately 3.1 billion gallons of bioethanol annually plus co-products like animal feed and corn oil. The company maintains a substantial operational footprint with 2,400 employees but shows no recent expansion or strategic announcements.
POET LLC is the largest US ethanol producer, operating 35 corn-based bioprocessing facilities across nine states and producing roughly 3.1 billion gallons of bioethanol per year, along with high-protein animal feed, corn oil, and biogenic CO2. Founded as Broin Companies and rebranded POET, it is a privately-held, independent company headquartered in Sioux Falls, South Dakota.
Employees
2,400
Mfg Plants
34
All Facilities
36
Activity
3/10
Type
Private
Plant Locations (36 mapped)
0
Recent News
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Manufacturing Plants (34)
POET Bioprocessing - Arthur
Arthur, IA
Corn-based ethanol bioprocessing facility in Ida County
POET Bioprocessing - Ashton
Ashton, IA
Began full production April 2004; corn-based ethanol
POET Bioprocessing - Coon Rapids
Coon Rapids, IA
Corn-based ethanol bioprocessing facility in Carroll County
POET Bioprocessing - Corning
Corning, IA
Produces 60 million gallons of bioethanol per year
POET Bioprocessing - Emmetsburg
Emmetsburg, IA
Site of former cellulosic ethanol Project LIBERTY; now conventional corn ethanol
POET Bioprocessing - Fairbank
Fairbank, IA
Corn-based ethanol bioprocessing facility in Buchanan County
POET Bioprocessing - Gowrie
Gowrie, IA
Corn-based ethanol bioprocessing facility in Webster County
POET Bioprocessing - Hanlontown
Hanlontown, IA
Produces 56 million gallons of ethanol annually
POET Bioprocessing - Iowa Falls
Iowa Falls, IA
Corn-based ethanol bioprocessing facility in Hardin County
POET Bioprocessing - Jewell
Jewell, IA
Produces 90 million gallons of bioethanol annually; began operations March 2006
POET Bioprocessing - Menlo
Menlo, IA
Acquired from Flint Hills Resources June 2021; produces 132 million gallons per year
POET Bioprocessing - Shell Rock
Shell Rock, IA
Acquired from Flint Hills Resources 2021; corn-based ethanol
POET Bioprocessing - Alexandria
Alexandria, IN
Produces 65 million gallons of ethanol per year from corn and grain sorghum
POET Bioprocessing - Cloverdale
Cloverdale, IN
Corn-based ethanol bioprocessing facility; reopened 2023
POET Bioprocessing - North Manchester
North Manchester, IN
Corn-based ethanol bioprocessing facility in Wabash County
POET Bioprocessing - Portland
Portland, IN
Corn-based ethanol bioprocessing facility in Jay County
POET Bioprocessing - Shelbyville
Shelbyville, IN
Fifth Indiana POET plant; groundbreaking 2024; newest Indiana facility
POET Bioprocessing - Caro
Caro, MI
Michigan's only POET facility; began operations circa 2002
POET Bioprocessing - Bingham Lake
Bingham Lake, MN
Corn-based ethanol bioprocessing facility in Cottonwood County
POET Bioprocessing - Glenville
Glenville, MN
Located near Glenville in Freeborn County; produces 48 million gallons per year
POET Bioprocessing - Lake Crystal
Lake Crystal, MN
Produces 68 million gallons of bioethanol annually in Blue Earth County
POET Bioprocessing - Preston
Preston, MN
Produces 55 million gallons of bioethanol annually in Fillmore County
POET Bioprocessing - Laddonia
Laddonia, MO
Produces 80 million gallons of bioethanol annually in Audrain County
POET Bioprocessing - Macon
Macon, MO
Missouri's first ethanol plant; began production May 2000; produces 55 million gallons per year
POET Bioprocessing - Fairmont
Fairmont, NE
Corn-based ethanol facility in Fillmore County; acquired from Flint Hills Resources 2021
POET Bioprocessing - Fostoria
Fostoria, OH
Corn-based ethanol bioprocessing facility in Seneca County
POET Bioprocessing - Leipsic
Leipsic, OH
Corn-based ethanol bioprocessing facility in Putnam County
POET Bioprocessing - Marion
Marion, OH
Produces 154 million gallons of bioethanol annually; began operations October 2008
POET Bioprocessing - Big Stone
Big Stone City, SD
Produces 105 million gallons of bioethanol per year
POET Bioprocessing - Chancellor
Chancellor, SD
Corn-based ethanol bioprocessing facility in Turner County
POET Bioprocessing - Groton
Groton, SD
Corn-based ethanol bioprocessing facility in Brown County
POET Bioprocessing - Hudson
Hudson, SD
Corn-based ethanol bioprocessing facility in Lincoln County
POET Bioprocessing - Mitchell
Mitchell, SD
Produces 86 million gallons of bioethanol per year
POET Bioprocessing - Obion
Rives, TN
Acquired from Green Plains September 2025; 35th POET facility; produces 120 million gallons per year on 230 acres
Other Facilities (2)
POET LLC - Corporate Headquarters
Sioux Falls, SD · hq
Corporate headquarters for POET LLC, the parent operating entity
POET Research Center - Scotland
Scotland, SD · r&d
Research and development center; also serves as a bioprocessing facility