Abstract: This paper deals with the technical analysis for preferring more “Efficient and Green” of “Advanced-Ultra Supercritical 760°C” technology for power generation for achieving more savings on Efficiency, Capital Cost, O&M Cost and with reduced GHG emissions instead of preferring “710°C technology” . There is an urgent need for the shifting of the focus of technology development for proposed A-USC (Advanced Ultra-Super Critical) from A-USC-710°C to A-USC-760°C for availing greener and less costly cost power generation option. It is said that just a 1% gain in efficiency for a typical 700 MW plant reduces 30-year lifetime emissions by 2,000 tonne NOx, 2,000 tonne SO2, 500 tonne particulate matter and 2.5 million tonne CO2. Further to that improvements in the Efficiency will not only decrease operating costs and make better use of fossil fuels, they will also reduce the emissions.