In a world that is acutely aware of the pressing need to address climate change and reduce carbon emissions, the search for sustainable and clean energy sources has become an urgent imperative. We find ourselves at a pivotal moment in history, where the urgency of reducing emissions in hard-to-abate sectors looms large. Out of the myriad of solutions, green hydrogen emerges as a beacon of hope in addressing this challenge, offering a pathway to cut emissions deeply and quickly. The economics looks robust, with the growing demand for green hydrogen in Asia and the Pacific, the question that looms before us now is how to bring this concept into fruition.The heart of this transformation lies in a formidable barrier: cost.The development of green hydrogen, from production to transportation to utilization, presents significant financial challenges. These financial barriers are particularly burdensome for developing countries attempting to implement hydrogen infrastructure as many lack the financial capacity and expertise. This is where international institutions like the Asian Development Bank (ADB) and others must leverage their full arsenal of policy, technology, and expertise. These institutions must play a pivotal role in mobilizing the necessary financing to enable green hydrogen markets to flourish.