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Official website

of the Commonwealth of Pennsylvania

    The .gov means it's official.

    Local, state, and federal government websites often end in .gov. Commonwealth of Pennsylvania government websites and email systems use "pennsylvania.gov" or "pa.gov" at the end of the address. Before sharing sensitive or personal information, make sure you're on an official state website. 

    Emission Reduction Credit Files

    Note: Applications are to be submitted to the DEP Regional office (PDF) serving you. Contact the Allegheny (PDF) or Philadelphia (PDF) air programs for permits in those counties.

    Emission Reduction Credit Registry System (PDF)
    Businesses interested in buying or selling emission reduction credits can now get help through the DEP's ERC registry system.

    Applications

    • ERC Instructions (PDF)
      Instruction for Emission Reduction Credit Registry Application (6/99)(Word)

    Reports

    • ERC PA Report (PDF)
      Pennsylvania's ERC Registry System and Status Report for Applications

    Reciprocity

    • Reciprocity MD
      Reciprocity agreement between Pennsylvania and Maryland (PDF)(1/02)
    • Reciprocity NY
      Reciprocity agreement between Pennsylvania and New York (PDF)(6/96)