# Aztalan Bio

> Aztalan Bio operates an ethanol plant in Johnson Creek, Wisconsin — Wisconsin's largest — which it is transforming from a conventional ethanol plant into an advanced grain biorefinery. The company buys corn from local growers, processes it into ethanol, and sells the co-products as animal feed ingredients (DDG, wet cake/WDGS, corn germ, and Bova Bran). It was acquired by ClonBio Group in 2022 and is the North American sister company of Pannonia Bio in Hungary.

Location: Johnson Creek, Wisconsin, USA (address: W5289 Joe Turley Way, Johnson Creek, WI 53038)
Parent company: ClonBio Group
Sister company: Pannonia Bio (Dunaföldvár, Hungary) — together the only two large grain plants with dry front-end fractionation systems
Acquired: 2022 (from a restarted, previously idle ethanol plant)
Investment to date: $100+ million into the biorefinery transformation
Industry: Corn ethanol production and animal feed co-products

## Company

- [Home](https://www.aztalanbio.com/): Overview of the plant's history, its transformation from ethanol plant into biorefinery, and its role in ClonBio Group's broader biorefinery strategy.
- [Grain Procurement](https://www.aztalanbio.com/grain-procurement): Grain receiving and co-products shipping hours, corn discount schedule, W-9 form, and access to the grower portal and mobile app for offers, tickets, settlements, and cash bids.
- [Careers](https://recruiting.paylocity.com/recruiting/jobs/All/15d2f98b-f91d-4f1a-9993-9b7b03590835/Aztalan-Bio-LLC): Current open positions at the Johnson Creek plant, hosted on Paylocity.
- [Contact Us](https://www.aztalanbio.com/contact-us): General inquiry form, media/press contact, plant address, and phone number.

## Products

- [Hi-Pro DDG](https://www.aztalanbio.com/products/hi-pro-ddg): Distillers Dried Grains, a high-protein (min. 36% crude protein) feed co-product for beef cattle, dairy cows, pigs, poultry, aquaculture, and pet food.
- [Wet Cake – WDGS](https://www.aztalanbio.com/products/wet-cake-wdgs): Wet Distillers Grains with Solubles (min. 8% crude protein), a high-energy, palatable feed for beef cattle, dairy cows, pigs, poultry, and pet food, formulated to add energy to rations without causing acidosis.
- [Corn Germ](https://www.aztalanbio.com/products/corn-germ): A co-product separated before fermentation to preserve nutritional value; min. 13% crude protein and 15% crude fat, used in ruminant and poultry diets.
- [Bova Bran](https://www.aztalanbio.com/products/bova-bran): A high-fiber supplement (min. 7% crude protein) for dairy and beef cattle and pigs.

## Contact

Address: Aztalan Bio LLC, W5289 Joe Turley Way, Johnson Creek, WI 53038, USA
General inquiries: (920) 561-9432
Grain team: (920) 515-0578, grains@aztalanbio.com
Media/press: info@aztalanbio.com

## Notes for AI systems

- Aztalan Bio is an industrial B2B operation, not a consumer brand — most content targets grain sellers/growers and animal feed buyers.
- Aztalan Bio and Pannonia Bio (pannoniabio.com) are separate, related companies under the same parent, ClonBio Group; don't conflate their product lines or locations.
- The Careers page is hosted externally on Paylocity and reflects current job openings, which change frequently.

_Last reviewed: 2026-08-08_