The global grey hydrogen market is poised for significant growth, with projections indicating a substantial increase from US$188.72 billion in 2024 to nearly US$1,222.69 billion by 2050, expanding at a CAGR of 7.45% during the forecast period of 2025-2050. Grey hydrogen continues to dominate global hydrogen production, with major contributions from China, North America, and key energy corporations like Aramco. Industrial decarbonization initiatives are fueling the adoption of grey hydrogen, with sectors like refining, chemicals, and power generation driving demand. Investments in on-site grey hydrogen facilities are on the rise to ensure a stable supply for critical industries. Examples include a leading refinery in Alberta, Canada commissioning an 80,000-metric-ton SMR unit, a fertilizer plant in Spain installing a 15,000-metric-ton hydrogen unit, and an ammonia production facility in Iowa integrating a 25,000-metric-ton reactor for self-sufficiency. However, infrastructure limitations pose challenges for grey hydrogen transport and storage. Outdated pipelines, limited storage capacities, and transportation constraints hinder efficient scaling. Investments in modernization, such as a planned 300-kilometer hydrogen pipeline retrofit in the Netherlands and innovative solutions like a floating hydrogen barge concept in Singapore, aim to address these challenges. Overall, the grey hydrogen market is witnessing positive growth fueled by industrial demand, decarbonization initiatives, and strategic investments in infrastructure to overcome existing limitations and meet future energy needs.