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Instructions and FAQ for Interchange Filing Search


  1. Navigate to the Interchange Filing Search page.
  2. Fill the appropriate fields with your search criteria and click the Search button.
  3. Click on the blue number that corresponds with your item of choice. This will take you to a list of documents. On this screen you will see documents available for download.


What information can be found with Interchange?

  • Interchange will allow you to locate information that is officially filed with the PUC in Central Records, including Projects, Dockets and Tariff applications. Please note that the actual tariffs are not available in Interchange. Hard copies may be obtained from the Central Records Division by emailing

What additional tools do I need to retrieve and view filings over the Internet?

  1. The PUC supports the most current versions of Edge, Chrome, Firefox, and Safari.
  2. To view PDF files download the free Adobe Reader
  3. The PUC Interchange still contains many legacy multipage TIFF files. Modern versions of Windows include the Windows Photo Viewer or similar. Another option is a tool such as IrfanView.
  4. Some files may need to be decompressed (unzipped). Modern versions of Windows have unzip utilities built-in. These files carry the .zip extension. If your operating system does not include this utility, then a program such as 7-zip or WinZip may be required to access the files.

How can I find a Control Number or Case Style?

  • You can find a Control Number or Case Style by using the Filing Search feature located on the Interchange Filing Search page.

How do I file documents with the PUC?

I am having problems accessing/downloading documents or using Filer, how do I get assistance?