A study conducted by ICF and presented to the Petroleum and Natural Gas Regulatory Board in India has highlighted the impact of implementing green hydrogen mandates at refineries in the country. The study indicates that such mandates, ranging from 5% to 100%, would have minimal effects on consumer fuel prices. Even with a 50% green hydrogen blending mandate, the study found only a 2.5% increase in the cost of petroleum products. The analysis assumed specific prices for natural gas, green hydrogen, and crude oil. The research also noted that a 10% green hydrogen mandate would lead to just a 0.5% rise in petroleum product costs. Refineries, major consumers of hydrogen in India, have raised concerns about potential redundancies in their grey hydrogen production facilities due to mandated shifts to green hydrogen. The study forecasts an increase in domestic hydrogen demand to 8 MTPA by 2030 from the current 6.7 MTPA, with projections suggesting cost parity between green and grey hydrogen by 2035. While NITI Aayog anticipates cost parity by 2029, challenges remain in blending green hydrogen into natural gas pipelines beyond 10%. The study proposes the development of pure hydrogen pipelines and supporting infrastructure as a potentially more feasible option than extensive blending. India aims to blend up to 15% green hydrogen in the city gas distribution system by 2030, with the study offering insights into the challenges and opportunities associated with the country's clean energy transition.