CO 2 Emission Standards for Affected Steam Generating Units and Integrated Gasification Combined Cycle Facilities That Commenced Construction After January 8, 2014, and Reconstruction or Modification After June 18, 2014

[Note: Numerical values of 1,000 or greater have a minimum of 3 significant figures and numerical values of less than 1,000 have a minimum of 2 significant figures] Affected EGU CO 2 Emission standard Newly constructed steam generating unit or integrated gasification combined cycle (IGCC) 640 kg CO 2 /MWh of gross energy output (1,400 lb CO 2 /MWh-gross). Reconstructed steam generating unit or IGCC that has base load rating of 2,100 GJ/h (2,000 MMBtu/h) or less 910 kg CO 2 /MWh of gross energy output (2,000 lb CO 2 /MWh-gross). Reconstructed steam generating unit or IGCC that has a base load rating greater than 2,100 GJ/h (2,000 MMBtu/h) 820 kg CO 2 /MWh of gross energy output (1,800 lb CO 2 /MWh-gross). Modified steam generating unit or IGCC A unit-specific emission limit determined by the unit's best historical annual CO 2 emission rate (from 2002 to the date of the modification); the emission limit will be no lower than: (1) 820 kg CO 2 /MWh of gross energy output (1,800 lb CO 2 /MWh-gross) for units with a base load rating greater than 2,100 GJ/h (2,000 MMBtu/h); or (2) 910 kg CO 2 /MWh of gross energy output (2,000 lb CO 2 /MWh-gross) for units with a base load rating of 2,100 GJ/h (2,000 MMBtu/h) or less. [89 FR 40034, May 9, 2024]