Avaada Group, which last month signed an MoU with the Rajasthan government to set up a green hydrogen and ammonia plant for Rs 40,000 crore is planning to begin work on the project as early as next year. Avada Group chairperson Vineet Mittal tells ET the company is at the cusp of an exponential growth coming in from the global as well as domestic demand for green hydrogen, and sustainability fuels. Edited excerpts: