Hydrogen has emerged as a versatile tool for decarbonization, with green hydrogen showing promise in transforming various industries in New Zealand. The country's demand for green hydrogen, estimated at 2.8 Mt/y, highlights the potential applications in sectors like fertilizer, methanol, shipping, and steel production. However, transitioning to green hydrogen presents challenges, including the need to significantly expand renewable power capacity and electrolyzer infrastructure. In addition to immediate applications, the strategic storage of hydrogen is crucial for managing seasonal energy variations. New Zealand is exploring underground reservoirs as potential storage sites, although technical challenges such as leak detection and microbial interactions need to be addressed. Green hydrogen also offers a sustainable solution for decarbonizing steel production, with projects like hydrogen-based direct reduced iron (H2-DRI) gaining traction. To compete with coal-based processes, achieving competitive electricity prices is essential. Furthermore, New Zealand is considering hydrogen exports, but transportation complexities pose a significant hurdle. Various methods like cryogenic liquefaction, ammonia conversion, and e-methanol production are being evaluated to make hydrogen exports feasible. Despite the potential of green hydrogen, cost remains a barrier to widespread adoption. Research aims to develop cost-effective electrolyzers using abundant materials and explore alternative hydrogen production methods. New Zealand's unique geology presents opportunities for innovative approaches to hydrogen production. Overall, while green hydrogen holds promise for decarbonizing industries in New Zealand, addressing technical, economic, and logistical challenges is essential for its successful integration and achieving a sustainable energy future.