His Adani Group owns 74 percent of Mumbai International Airport and controls India's largest port, Mundra, in the mogul's native state of Gujarat. But, according to the report, his investment in green energy has paid off handsomely in the last year, with the listed business Adani Green Energy becoming his most valuable after its share price nearly doubled in the past year. By 2030, the company plans to invest USD 70 billion in green energy projects, with the goal of becoming the world's largest renewable energy generator.