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Program Compliance

Program Compliance Tables

Last updated: 07/2022

Related Figures

Highlights

ARP SO₂ Program

All ARP SO₂ facilities were in compliance in 2021, holding sufficient allowances to cover their SO₂ emissions.
ARP sources reported total SO₂ emissions of 935,750 tons in 2021.
EPA deducted 935,703 allowances for compliance with the ARP. After reconciliation, over 71 million ARP SO₂ allowances remain unused and were banked.

CSAPR SO₂ Group 1 Program

All CSAPR SO₂ Group 1 facilities were in compliance in 2021, holding sufficient allowances to cover their SO₂ emissions.
CSAPR SO₂ Group 1 sources reported total SO₂ emissions of 518,858 tons in 2021.
EPA deducted approximately 518,000 allowances for the CSAPR SO₂ Group 1 compliance. After reconciliation, about 6.6 million CSAPR SO₂ Group 1 allowances were banked and are available for compliance in future years.

CSAPR SO₂ Group 2 Program

All CSAPR SO₂ Group 2 facilities were in compliance in 2021, holding sufficient allowances to cover their SO₂ emissions.
CSAPR SO₂ Group 2 sources reported total SO₂ emissions of 73,572 tons in 2021.
EPA deducted 73,565 allowances for the CSAPR SO₂ Group 2 compliance. After reconciliation, about 3.4 million CSAPR SO₂ Group 2 allowances remained unused and were banked.

CSAPR NOₓ Annual Program

All CSAPR NOₓ Annual Program facilities were in compliance in 2021, holding sufficient allowances to cover their NOₓ emissions.
The reported 2021 annual NOₓ emissions by the CSAPR sources totaled 440,051 tons.
EPA deducted 440,184 allowances for the CSAPR NOₓ Annual Program compliance. After reconciliation, about 3.4 million CSAPR NOₓ Annual Program allowances were banked and are available for compliance in future years.

CSAPR NOₓ Ozone Season Group 1 Program

All CSAPR NOₓ Ozone Season Group 1 facilities were in compliance in 2021, holding sufficient allowances to cover their NOₓ emissions.
CSAPR NOₓ Ozone Season Group 1 sources reported total ozone season NOₓ emissions of 6,150 tons in 2021.
EPA deducted over 6,100 allowances for the CSAPR NOₓ Ozone Season Group 1 compliance. After reconciliation, over 105,000 CSAPR NOₓ Ozone Season Group 1 allowances were banked.

CSAPR NOₓ Ozone Season Group 2 Program

All CSAPR NOₓ Ozone Season Group 2 facilities were in compliance in 2021, holding sufficient allowances to cover their NOₓ emissions.
CSAPR NOₓ Ozone Season Group 2 sources reported total ozone season NOₓ emissions of 121,838 tons in 2021.
EPA deducted 121,877 allowances for the CSAPR NOₓ Ozone Season Group 2 compliance. After reconciliation, over 157,000 CSAPR NOₓ Ozone Season Group 2 allowances remain unused and were banked.
Based on preliminary calculations, in 2021, Missouri units covered by the CSAPR Ozone Season NOₓ Group 2 Program reported emissions exceeding the state's assurance level, triggering the assurance provisions. Emissions in Missouri exceeded the state’s assurance level by 1,289 tons, resulting in the surrender of 2,578 additional allowances.¹

CSAPR NOₓ Ozone Season Group 3 Program

All CSAPR NOₓ Ozone Season Group 3 facilities were in compliance in 2021, holding sufficient allowances to cover their NOₓ emissions.
CSAPR NOₓ Ozone Season Group 3 sources reported total ozone season NOₓ emissions of 114,337 tons in 2021.
EPA deducted 114,337 allowances for the CSAPR NOₓ Ozone Season Group 3 compliance. After reconciliation, about 30,000 CSAPR NOₓ Ozone Season Group 3 allowances remain unused and were banked.

See 87 Fed. Reg. 42459.

Background Information

The year 2021 was the seventh year of compliance for the CSAPR SO₂ (Group 1 and Group 2), NOₓ Annual and NOₓ Ozone Season Group 1 programs, while it was the fifth year of compliance for the CSAPR NOₓ Ozone Season Group 2 program and the first year of compliance for the CSAPR NOₓ Ozone Season Group 3 program. Each program has its own distinct set of allowances, which cannot be used for compliance with the other programs (e.g., CSAPR SO₂ Group 1 allowances cannot be used to comply with the CSAPR SO₂ Group 2 Program). Each CSAPR trading program contains “assurance provisions” to guarantee that each covered state achieves the required emissions reductions. If a state’s covered units exceed the state’s assurance level under the specific trading program, then the state must surrender two allowances for each ton of emissions exceeding the assurance level.

The compliance summary emissions number cited in “Highlights” may differ slightly from the sums of emissions used for reconciliation purposes shown in the “Allowance Reconciliation Summary” figures because of variation in rounding conventions and compliance issues at certain units. Therefore, the allowance totals deducted for actual emissions in those figures differ slightly from the number of emissions shown elsewhere in this report.

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