With the growing population and rising per capita income in India, electricity demand has grown significantly in the last couple of decades. The United Nations mandated all countries to achieve sustainable development goals while emphasizing net-zero emission targets to address global warming threats. The present study aims to rank various energy mix alternatives/sources (both fossil and renewable) using an integrated Fuzzy DEMATEL-BWM-Fuzzy TOPSIS model based on key criteria and sub-criteria for each energy alternative. Five key criteria or parameters and the associated sub-criteria for each criterion have been chosen based on the review of the literature.  Five experts from the energy sector were asked for pairwise comparisons between energy mix alternatives and between the criteria selected. The study found that the environmental criterion is the most important criterion and GHG emissions as the most important sub-criterion for deciding the best source of energy for power generation. The energy mix comprising solar, hydroelectric, and wind was ranked highest as compared to any other mix of energy resources for power generation in India. The present study will be useful for policymakers in setting the priorities among all energy mix resources to address the energy needs of the country, with the main focus on meeting the Net-zero emission target in the long term in India