Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
Appendix -
Link to an amendment published at 89 FR 40034, May 9, 2024.

[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 CO2 Emission standard
Newly constructed steam generating unit or integrated gasification combined cycle (IGCC)640 kg CO2/MWh of gross energy output (1,400 lb CO2/MWh).
Reconstructed steam generating unit or IGCC that has base load rating of 2,100 GJ/h (2,000 MMBtu/h) or less910 kg of CO2 per MWh of gross energy output (2,000 lb CO2/MWh).
Reconstructed steam generating unit or IGCC that has a base load rating greater than 2,100 GJ/h (2,000 MMBtu/h)820 kg of CO2 per MWh of gross energy output (1,800 lb CO2/MWh).
Modified steam generating unit or IGCCA unit-specific emission limit determined by the unit's best historical annual CO2 emission rate (from 2002 to the date of the modification); the emission limit will be no lower than:
1. 1,800 lb CO2/MWh-gross for units with a base load rating greater than 2,000 MMBtu/h; or
2. 2,000 lb CO2/MWh-gross for units with a base load rating of 2,000 MMBtu/h or less.
authority: 42 U.S.C. 7401
source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.