1992 -> The Department of Non-Conventional Energy Sources (DNES), which was established in 1982 under the Ministry of Energy, was upgraded to a full-fledged Ministry of Non-Conventional Energy Sources (MNES) in 1992. This upgrade reflected the growing importance of renewable energy in India's energy policy. Later, in 2006, the ministry was renamed to the Ministry of New and Renewable Energy (MNRE), which continues to operate today. -> correct