Billionaire Mukesh Ambani’s Reliance Industries Ltd is targeting to become one of the largest producers of blue hydrogen globally, producing the zero-emission fuel at costs that will be half of the global average. The operator of the world’s largest oil refining complex will repurpose a Rs 30,000 crore plant that currently converts petroleum coke into synthesis gas to produce blue hydrogen for USD 1.2-1.5 a kilogram, Reliance said in a presentation detailing the separation plan.