The Korea Institute of Machinery and Materials (KIMM) has developed a groundbreaking Hydrogen-fueled Combined Heat and Power System for smart greenhouses, aiming to revolutionize sustainable agriculture practices. This innovative system integrates hydrogen fuel cells, solar thermal collectors, heat pumps, and adsorption chillers to ensure energy independence and significant carbon reduction in agricultural operations. By combining multiple renewable energy sources, the system boosts energy efficiency, reduces operational costs by over one-third, and slashes CO₂ emissions by more than 50% compared to conventional greenhouse systems. With a focus on stability and adaptability, the system optimally utilizes solar energy during the day and seamlessly transitions to fuel cell and heat pump operation in low light conditions or at night, offering a sustainable energy solution for varying seasons and weather fluctuations. The integration of an advanced control system further enhances energy management by minimizing interdependence between sources and maximizing overall system stability. Notably, the system's successful deployment in a 660-square-meter smart greenhouse in Jeonju has resulted in the cultivation of tomatoes for an extended period, showcasing impressive reductions in operating costs and CO₂ emissions. Driven by the vision of achieving energy self-sufficiency in greenhouse agriculture, KIMM's innovative approach signifies a significant milestone in the application of hydrogen fuel cells to smart farming. With high energy efficiency, stability, and economic viability, the Hydrogen-fueled CHP System stands out as a pioneering solution for advancing sustainable agricultural practices.