IESS, 2047 has been created with a shared conviction of NITI Aayog and the energy research community of the value that intellectual advice adds to energy policy. The above belief has been proven by the fact that the IESS, 2047 has supported a number of exercises of energy demand estimation and its implications. This has motivated us to produce the Version 2.0. The latter is not merely an up-dation of numbers, but a de novo exercise in many ways. A sharper analysis of demand and supply sectors has been supplemented with new features as have been elaborated below. The IESS Team also devoted a lot of time on incorporating new features in the website (www.indiaenergy.gov.in) and webtool that might make the Tool more user-friendly.