Green ammonia is produced by combining nitrogen with hydrogen generated via renewable energy (such as solar, wind, or hydropower), rather than fossil fuels. It is emerging as a clean alternative in sectors including fertilizers, shipping, energy storage, and industrial feedstock. Key enablers include advances in electrolyzer technologies, integrated renewable energy systems, and growing regulatory focus on emissions reduction. Challenges include ensuring reliable renewable power supply, scaling production, managing transportation/storage, and developing supporting infrastructure.