Minnesota green ammonia pilot scales to 1 tonne per day, proving wind-powered fertilizer production works

A green ammonia pilot at the University of Minnesota’s West Central Research and Outreach Center in Morris is scaling toward a target of approximately one metric ton of zero-carbon ammonia per day, making it one of the most advanced small-scale renewable fertilizer projects in the United States. The facility uses on-site electrolyzers to split water into hydrogen and oxygen, then combines the hydrogen with nitrogen separated from ambient air using the century-old Haber-Bosch process — powered entirely by Minnesota wind energy.

How the Morris green ammonia facility works

The plant eliminates fossil fuels from the ammonia synthesis chain. Conventional ammonia production uses natural gas both as a feedstock (for hydrogen) and as an energy source, generating roughly 1.6 tonnes of CO₂ per tonne of ammonia. At Morris, the hydrogen comes from water electrolysis and the energy comes from the local wind resource, producing ammonia with no direct carbon emissions.

The core engineering challenge is operating the Haber-Bosch reactor under fluctuating renewable power. Wind output varies by the hour, and the electrolyzers must ramp up and down accordingly. The ability to run reliably under these conditions is the innovation the research team hopes to commercialize — not the chemistry itself, which is well understood, but the integration with variable renewable supply.

The economic case for decentralized green ammonia production

For Minnesota, the opportunity may be more economic than environmental. The state’s farmers spend hundreds of millions of dollars annually on anhydrous ammonia, virtually all of it produced from natural gas at large centralized plants and shipped in by rail and truck. A network of small wind-powered ammonia plants could keep a portion of those dollars circulating in rural communities, the university argues.

At current natural gas prices, conventional ammonia costs roughly $400–500 per tonne at the plant gate. Green ammonia remains more expensive, with most pilot-scale projects reporting costs above $700 per tonne. Closing that gap depends on continued declines in electrolyzer capital costs, access to cheap wind power and potential revenue from federal tax credits under the Inflation Reduction Act.

Where Minnesota fits in the green ammonia landscape

The Morris project sits at the small, decentralized end of a rapidly growing global green ammonia sector. At the industrial scale, Envision Energy’s Chifeng facility in China has reached 300,000 tonnes per year of capacity and shipped the world’s first commercial green ammonia cargo in February 2026. Chile’s $11 billion HNH Energy project and a $1 billion green ammonia hub in Jordan represent the utility-scale end of the market.

Minnesota’s approach targets a different niche: community-scale production for local agricultural use, bypassing long supply chains and reducing exposure to global shipping disruptions like the Strait of Hormuz crisis that has roiled fertilizer markets throughout 2026.

Outlook for wind-powered fertilizer production

The research team expects to publish performance data from the scaling phase later this year. If the economics prove viable at the 1-tonne-per-day level, the model could be replicated across the Upper Midwest’s wind corridor, where strong wind resources and concentrated fertilizer demand create favorable conditions for decentralized green ammonia production.

Source: University of Minnesota

Key facts about the Minnesota green ammonia project