The article discusses the significant reduction in production costs of green hydrogen, as projected by ABI Research. The Levelized Cost of Hydrogen (LCOH) is expected to drop to approximately US$2.5/kg by 2030 and further decrease to US$1.80/kg by 2040. This cost competitiveness is anticipated to drive the adoption of green hydrogen in heavy industries, aiding in their decarbonization efforts. Key factors contributing to this cost reduction include advancements in electrolyzer efficiencies, economies of scale, and decreasing prices of renewable energy. Industry players such as ITM Power, Plug Power, Siemens Energy, and others are identified as instrumental in driving down capital expenditure (CAPEX) related to green hydrogen production. Supporting technology vendors like Danfoss and Schneider Electric are highlighted for their role in reducing operational expenditure (OPEX). Additionally, major green hydrogen producers including Linde, Shell, and Equinor are expected to play a significant role as the market matures. The article emphasizes the importance of accurate cost prediction for the success of green hydrogen projects, particularly within heavy industries like aviation, steel, and shipping. The ability to forecast when green LCOHs will become competitive is crucial for shaping demand in these sectors. The findings underscore the necessity of industry vendors to stay informed about cost developments and demand trends in specific markets to ensure successful adoption of green hydrogen for decarbonization purposes.