India's Green Hydrogen Mission has received an outlay of Rs 19,744 crore to boost the production and use of green hydrogen in the country. The mission aims to reduce the cost of renewable power, promote electrolyser manufacturing capacity, and provide incentives for green hydrogen producers. With a target to produce 5 million tonnes of green hydrogen by 2030, the emphasis is on sectors like refineries and fertilisers which heavily rely on hydrogen. The transition from grey to green ammonia in fertiliser production is highlighted, with urea and non-urea fertilisers being key segments. While green ammonia initially costs more than grey ammonia, the prices are expected to decrease over time. The potential impact on the cost of urea and non-urea fertilisers is outlined, with estimates suggesting a gradual transition over the next 25 years. Despite the financial implications, the move towards green ammonia is seen as crucial for environmental sustainability and reducing carbon emissions. Techno-economic challenges will be addressed, and the eventual aim is to produce non-urea fertilisers entirely using green ammonia, contributing to a greener and more sustainable future.