Energy Giants Back Startup Reworking Ammonia

Ammobia raises $7.5M from major energy investors to build modular ammonia plants that could slash fertilizer costs for U.S. farmers

9 Mar 2026

A San Francisco startup backed by major energy groups says it can reduce the cost of producing ammonia, a key fertiliser ingredient, and bring production closer to US farms.

Ammobia said in January it had raised $7.5mn in seed funding from investors including Shell Ventures, Chevron Technology Ventures and Air Liquide’s venture arm. The company plans to use the capital to build a pilot facility and begin commercial demonstrations of its ammonia synthesis system, which it calls “Haber-Bosch 2.0”.

Ammonia production today relies largely on the Haber-Bosch process, developed more than a century ago. The method requires very high temperatures and pressures and typically depends on natural gas as both fuel and feedstock. As a result, plants tend to be large and capital intensive, with production concentrated in a relatively small number of facilities.

This structure has left US farmers exposed to volatile global fertiliser prices and disruptions in international supply chains.

Ammobia says its reactor operates at roughly one-tenth of the pressure used in conventional systems and at lower temperatures. According to the company, this could cut capital costs for the synthesis loop by as much as 50 per cent.

Lower operating pressures also allow the technology to be deployed in smaller, modular plants. Such facilities could be built closer to agricultural regions, potentially reducing transport costs and improving supply reliability for growers.

The development comes as fertiliser costs remain elevated in the US. Prices stayed high through 2025 and into 2026, prompting some farmers to reduce applications of phosphate and other nutrients to manage input expenses.

The company argues its approach may also support lower-emission ammonia production. Systems that operate at lower pressure can be more compatible with intermittent renewable electricity, which is often cited as a barrier to scaling so-called green ammonia.

With the latest round, Ammobia’s total funding has reached $13.5mn. The company recently appointed an experienced ammonia engineering executive to oversee technical development as it moves toward pilot-scale validation. Industry observers say the coming demonstrations will test whether smaller, distributed ammonia production can compete with established large-scale plants.