Kikkoman has opened a 240,000-square-foot soy sauce and seasoning plant in Jefferson, Wisconsin, its third U.S. production facility, after reviewing 64 Midwestern locations largely on the strength of local water quality and agricultural access. The company is investing roughly $560 million in the Jefferson site over 10 years, and combined with nearly $250 million in upgrades at its existing Walworth, Wisconsin plant, its total Wisconsin commitment tops $800 million. The Jefferson facility begins shipping product this fall.
Kikkoman Chairman and Honorary CEO Yuzaburo Mogi cited access to high-quality water as a key reason the company chose Jefferson, according to the Wisconsin Economic Development Corporation (WEDC). Water is a core input for naturally brewed soy sauce, which combines soybeans, wheat, salt and water through fermentation and aging, and the 100-acre site also gives Kikkoman proximity to agricultural suppliers and an established food-manufacturing workforce.
Kikkoman Has Operated in Wisconsin Since 1973
The company's Walworth plant, opened in 1973, has grown into what WEDC calls Kikkoman's highest-producing soy sauce facility in the world, while a second U.S. plant in Folsom, California, opened in 1998. Jefferson will be the third, producing soy sauce, teriyaki sauce and other seasonings for retail, foodservice and food-manufacturing customers, with a flexible layout built to handle different viscosities and packaging formats including glass, plastic and bulk containers. The WEDC is backing the project with up to $15.5 million in performance-based tax credits tied to jobs and investment, and the combined Jefferson and Walworth expansion is expected to create more than 80 jobs.
The Company's 2030 Targets Don't Yet Cover This Plant
Kikkoman says the plant includes digital manufacturing systems for paperless operations and real-time tracking, framed as support for the company's global Vision 2030 goals of cutting CO2 emissions more than 50%, reducing water use per unit of production more than 30%, and reaching a 100% recycling rate. At its Takasago plant in Japan, Kikkoman has already shown what that looks like in practice, reporting a roughly 38% annual cut in water use after reusing cooling water from its hydraulic pressing system, one of several measurement-driven approaches manufacturers are using to cut water costs, though Kikkoman has not said whether Jefferson will use the same system.
What is missing from the opening announcement is any Jefferson-specific baseline. Kikkoman has not disclosed the plant's expected annual water withdrawal, wastewater volume, energy demand or emissions, so its 2030 goals should be read as targets the new plant is designed to support rather than results it has already delivered. Once production ramps up, water use per unit can improve even as total consumption rises with added output. Facility-level reporting would show whether Jefferson lowers both the intensity and the overall resource footprint of that added capacity, a test now playing out across manufacturing broadly as water access moves earlier into corporate site-selection decisions.
The Jefferson plant will anchor a 200-acre campus that WEDC and local partners are marketing as a hub for other food and beverage manufacturers, suppliers and logistics operations. For Jefferson and other communities competing for similar projects, Kikkoman's decision suggests that water reliability alongside power and permitting now carries as much weight in site selection as available land or tax incentives.
