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Subpart TTTT - Standards of Performance for Greenhouse Gas Emissions for Electric Generating Units

RegSenseAir QualityCFR SubpartCFR RegulationsEnvironmental Protection Agency (EPA)EnvironmentalAir QualityFocus AreaEnglishAir ProgramsUSA

Table 1 of Subpart TTTT of Part 60

Table 1 of Subpart TTTT of Part 60 - CO2 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]

Table 2 of Subpart TTTT of Part 60

Table 2 of Subpart TTTT of Part 60 - CO2 Emission Standards for Affected Stationary Combustion Turbines That Commenced Construction After January 8, 2014 and Reconstruction After June 18, 2014 (Net Energy Output-Based Standards Applicable as Approved by the Administrator)[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 or reconstructed stationary combustion turbine that supplies more than its design efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on both a 12-operating month and a 3-year rolling average basis and combusts more than 90% natural gas on a heat input basis on a 12-operating-month rolling average basis 450 kg CO 2 /MWh (1,000 lb CO 2 /MWh) of gross energy output; or 470 kg CO 2 /MWh (1,030 lb CO 2 /MWh) of net energy output.
Newly constructed or reconstructed stationary combustion turbine that supplies its design efficiency or 50 percent, whichever is less, times its potential electric output or less as net-electric sales on either a 12-operating month or a 3-year rolling average basis and combusts more than 90% natural gas on a heat input basis on a 12-operating-month rolling average basis] 50 kg CO 2 /GJ (120 lb CO 2 /MMBtu) of heat input.
Newly constructed and reconstructed stationary combustion turbine that combusts 90% or less natural gas on a heat input basis on a 12-operating-month rolling average basis Between 50 to 69 kg CO 2 /GJ (120 to 160 lb CO 2 /MMBtu) of heat input as determined by the procedures in §60.5525.

[89 FR 40034, May 9, 2024]

Table 3 to Subpart TTTT of Part 60

Table 3 to Subpart TTTT of Part 60 - Applicability of Subpart A of Part 60 (General Provisions) to Subpart TTTT
General provisions citation Subject of citation Applies to subpart TTTT Explanation
§60.1 Applicability Yes
§60.2 Definitions Yes Additional terms defined in §60.5580.
§60.3 Units and Abbreviations Yes
§60.4 Address Yes Does not apply to information reported electronically through ECMPS. Duplicate submittals are not required.
§60.5 Determination of construction or modification Yes
§60.6 Review of plans Yes
§60.7 Notification and Recordkeeping Yes Only the requirements to submit the notifications in §60.7(a)(1) and (3) and to keep records of malfunctions in §60.7(b), if applicable.
§60.8(a) Performance tests No
§60.8(b) Performance test method alternatives Yes Administrator can approve alternate methods
§60.8(c)-(f) Conducting performance tests No
§60.9 Availability of Information Yes
§60.10 State authority Yes
§60.11 Compliance with standards and maintenance requirements No.
§60.12 Circumvention Yes
§60.13 (a)-(h), (j) Monitoring requirements No All monitoring is done according to part 75.
§60.13 (i) Monitoring requirements Yes Administrator can approve alternative monitoring procedures or requirements
§60.14 Modification Yes (steam generating units and IGCC facilities) No (stationary combustion turbines)
§60.15 Reconstruction Yes
§60.16 Priority list No
§60.17 Incorporations by reference Yes
§60.18 General control device requirements No
§60.19 General notification and reporting requirements Yes Does not apply to notifications under §75.61 or to information reported through ECMPS.

[89 FR 40035, May 9, 2024]

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