Current Expansion Info

We’re building an industry-leading craft malt house
in the middle of Pacific Northwest grain paradise

Since early 2023, Mainstem and the Port of Columbia have been working methodically toward developing a regional craft malt house in southeast Washington State. Our goal is to establish the malting facility as an anchor business for a broader cluster of artisan grain enterprises, such as a bakery, pasta mill, brewery, distillery, and bulk foods supplier. We envision a future where shared resources, supply chains, distribution, market development efforts, and consumer engagement opportunities help lift all involved.

The project is well underway. An extensive feasibility study was completed in early 2024, and strong support has poured in from the Port of Columbia, the State of Washington, the U.S. Department of Agriculture, and various private funding sources specializing regenerative agricultural projects. We’ve so far secured nearly $6.5 million in public funding, with millions more in private and public funding expected as we move through 2026.

Stay tuned for more updates on facility design, and reach out to learn how you can get involved.

Info Last Updated: February 15, 2026
Current Status: Design near complete; financing underway
Target Facility Groundbreaking: Fall 2026
Target Facility Completion: Fall 2027
Mainstem Contact: phil@mainstemmalt.com

For more info on the overall Grain Cluster,
head to the Port of Columbia’s website!

The following renderings are at ~75% design completion. We just finished up a more thorough integration of storage, conveyance, cleaning, and other grain processing and handling equipment. The final adjustments are being made to the building design and we’ll update this page with new renderings as soon as they’re available.