The year 2025 is poised to be a significant turning point for the low-carbon hydrogen and ammonia sectors, amidst ongoing challenges like cost pressures and regulatory intricacies. Despite these hurdles, key milestones are on the horizon, hinting at a burgeoning era of commercialization. Lens Hydrogen's exclusive insights highlight five pivotal developments to monitor closely throughout the year. In the US, blue hydrogen is set to dominate investment decisions, spurred by policy advancements expected under a potential second Trump administration. Forecasts indicate a substantial influx of investments in blue hydrogen, positioning the US as a global leader in its production. On the green front, the anticipation surrounds the potential Final Investment Decision (FID) for another giga-scale green hydrogen project in 2025. While around 16 GWe of green hydrogen capacity have already reached FID, challenges persist, emphasizing the importance of factors like offtaker agreements, regulatory support, and subsidies. Additionally, the report hints at the expanding reach of Chinese electrolyser exports beyond traditional markets, indicating a broader adoption of hydrogen technologies globally. Furthermore, it addresses the ongoing issue of aligning project FIDs with offtake contracts and the forthcoming surge in low-carbon ammonia investments. As these sectors navigate a pivotal year ahead, the industry awaits with bated breath to witness the unfolding of these key developments shaping the low-carbon energy landscape.