Important Dates: Good Neighbor Plan NOx Ozone Season Group 3 Trading Program
2023 and 2024 Important Dates
On March 15, 2023, EPA finalized the Good Neighbor Plan for the 2015 ozone National Ambient Air Quality Standards (NAAQS). Starting in the 2023 ozone season, the rule will require additional emissions reductions of nitrogen oxides (NOX) from power plants in 22 states under the NOX Ozone Season Group 3 Trading Program. This list highlights key initial implementation dates for this program.
Note: Some courts have issued preliminary orders temporarily staying the effectiveness of EPA’s Good Neighbor SIP disapproval action (88 FR 9336) with respect to several states, and EPA is taking measures to comply with those orders. The description of the Good Neighbor Plan in this Fact Sheet reflects the rule as published, without regard to the stay orders and the measures EPA will be taking to comply with them.
General
June 1, 2023
March 15, 2023
June 5, 2023
Allowance transfer deadline for the 2022 control periods (applies to all CSAPR programs)
Good Neighbor Plan signed
Good Neighbor Plan published in the Federal Register
August 4, 2023
Rule effective date (see factsheet Prorating Emissions Budgets, Assurance Levels, and Unit-Level Allowance Allocations in the Event of an Effective Date After May 1, 2023 (pdf) )
2024-2029 ozone seasons
Unit-specific backstop daily rate applies to coal-fired steam units serving generators with a nameplate capacity ≥100 MW that operate with SCR on or before September 30 of the preceding control period (except circulating fluidized bed units)
August 1, 2024
Target date for EPA to recalibrate the Group 3 allowance bank if the bank exceeds 21% of the sum of the Group 3 states’ 2024 budgets
Group 2 Allowance Recall (see factsheet Recall of CSAPR NOₓ Ozone Season Group 2 Allowances from Sources in States Newly Transitioning to the CSAPR NOₓ Ozone Season Group 3 Trading Program (pdf) )
August 21, 2023
Target date for EPA to execute first-round recalls for vintage 2023-2024 Group 2 allowances
September 15, 2023
Deadline for sources to hold allowances for second-round recalls for vintage 2023-2024 Group 2 allowances
November 15, 2023
Target date for EPA to execute any further recalls of 2023-2024 Group 2 allowances
Group 3 Allowance Recordation
September 5, 2023
Deadline for EPA to record existing unit Group 3 allocations from 2023 and 2024 state budgets for sources that have fully complied with recall (but see “State-determined Allowance Allocations for 2024 Control Period” below)
June 1, 2024
Deadline for states to submit state-determined advance allocations of vintage 2025 Group 3 allowances
July 1, 2024
Deadline for EPA to record advance allocations of vintage 2025 Group 3 allowances
Group 3 Additional Bank Creation (see factsheet Creation of an Additional Group 3 Allowance Bank for the 2023 Control Period (pdf) )
September 18, 2023
Deadline for EPA to convert vintage 2017-2022 Group 2 allowances into vintage 2023 Group 3 allowances
State-determined Allowance Allocations for 2024 Control Period
August 4, 2023
Deadline for a state to submit to EPA a letter indicating its intent to submit a complete SIP revision to modify 2024 allowance allocations
September 1, 2023
Deadline for a state that submitted a letter of intent to submit to EPA a complete SIP revision to modify 2024 allowance allocations
September 15, 2023
Deadline for EPA to record EPA-determined default allocations for a state that submits a timely letter of intent but fails to submit a SIP revision
March 1, 2024
Deadline for EPA to record state-determined allocations for a state that submits a timely letter of intent followed by a timely SIP revision that is approved by EPA
New Unit Set-Aside (NUSA)
March 1, 2024
Deadline for EPA to publish preliminary NUSA NODA for the 2023 control periods
May 1, 2024
Deadline for EPA to publish final NUSA NODA for the 2023 control periods and record allocations
Note: If a date identified above is not a federal business day, the applicable date will generally be the next federal business day.