1. The document compares the emission specifications of new gas and steam power plants with the latest environmental standards. It shows the emission levels of pollutants like NOx, CO, and SO2 from different power plant configurations and fuel types are below the standards. 2. The emission levels from the flue gas duct of combined cycle power plants with heat recovery steam generators are presented. Emission levels from gas turbines and HRSGs of different power plant types (CCPP and CHP) are within permitted limits. 3. Details of government approved emission levels for older and new power plants are given along with the emission specifications of sample new gas and steam power plants that meet the latest environmental standards.