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  2. Cross-State Air Pollution

CSAPR Compliance Year 2024 NUSA NODAs

On this page:

  • May 20, 2025
  • April 22, 2025
  • February 28, 2025

If you do not have Microsoft Office, you may need to download a Free Viewer here to view the Excel files on this page.


May 20, 2025 - Adjusted 2024 Allowance Allocations for Indiana

  • 2025 Interim Final Rule (90 FR 21423, May 20, 2025)
  • Adjusted Allocations of Allowances to Indiana EGUs from the Revised CSAPR Update NUSA for 2024 (xlsx) (32.61 KB)

April 22, 2025 - Final NODA for 2024 Allowance Allocations: New Units for All CSAPR Programs

  • Notice of Data Availability (90 FR 16874, April 22, 2025)
  • New Unit Set Aside 2024 NOx Annual Final (xlsx) (81.95 KB)
  • New Unit Set Aside 2024 NOx Ozone Season Final (xlsx) (90.06 KB)
  • New Unit Set Aside 2024 SO2 Final (xlsx) (86.52 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 NOx Annual Final (xlsx) (172.46 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 NOx Ozone Season Final (xlsx) (243.05 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 SO2 Final (xlsx) (182.83 KB)

February 28, 2025 - Preliminary NODA for 2024 Allowance Allocations: New Units for All CSAPR Programs

EPA issued a preliminary Notice of Data Availability, as required by CSAPR, that lists new units that receive a 2024 CSAPR NOX Annual, NOX Ozone Season, or SO2 allowance allocation and allocation amounts. It also details the preliminary 2024 allowance allocations to CSAPR existing units in states in which the new unit set-aside for 2024 for those CSAPR Trading Programs were undersubscribed.

  • Notice of Data Availability (90 FR 10899, February 28, 2025)
  • New Unit Set Aside 2024 NOx Annual Preliminary (xlsx) (82.3 KB)
  • New Unit Set Aside 2024 NOx Ozone Season Preliminary (xlsx) (90.26 KB)
  • New Unit Set Aside 2024 SO2 Preliminary (xlsx) (81.33 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 NOx Annual Preliminary (xlsx) (172.47 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 NOX Ozone Season Preliminary (xlsx) (249.32 KB)
  • Existing Unit Allocations from Remaining New Unit Set Aside 2024 SO2 Preliminary (xlsx) (180.09 KB)

◀ Return to CSAPR Allowance Allocations

Cross-State Air Pollution

  • Good Neighbor Plan
  • What is Cross-State Air Pollution?
  • What Does the Clean Air Act Say?
Contact Us about Cross-State Air Pollution
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Last updated on May 20, 2025
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