The dual role of low-carbon ammonia in climate-smart farming and energy transition

The changing climate poses unprecedented risks and challenges to agricultural production and energy systems worldwide, necessitating innovative technology and policy solutions that transcend traditional boundaries. This paper highlights the critical intersection of energy and agricultural systems and identifies low-carbon intensity ammonia (LCIA) as a pivotal element in reducing the carbon footprint of US agricultural production, particularly in fertilizer use. It presents a comprehensive analysis of the ammonia market and value chain, emphasizing its potential to decarbonize agricultural fertilizers and serve as an alternative clean energy source. The technical review covers various ammonia production methods, from natural gas-based processes with carbon capture and storage to electrolysis using renewable energy. These methods' economic and environmental implications are examined to provide insights into the levelized costs and emissions of LCIA applications across various scenarios. A case study focusing on the Permian Basin and Southern High Plains regions is conducted to illustrate the regional synergy between the agriculture and energy sectors, proposing a framework for integrating LCIA into the US agricultural sector. The proposed framework, Sustainable Ammonia for Resilient Agriculture, outlines policy recommendations and strategic investments to overcome market and infrastructure barriers, aiming to develop a resillient and sustainable LCIA value chain. Future research direction should emphasize the need for local value chain development plans encompassing agriculture, energy, infrastructure, and workforce development under a unified policy framework.