Illinois Communication Protocols Working Group

The Illinois Communication Protocols Working Group (CPWG) seeks to achieve consensus among Illinois electric and natural gas market participants in determining how business transactions are communicated via EDI.

Meeting Information


To subscribe to the CPWG List Server, send a blank email to  You will receive an email stating that the administrator must approve your subscription.  Once it is approved, you will receive two additional emails, one welcoming you to the list and one showing you how to unsubscribe.
To send an email to the group, address it to:

To send a question to the CPWG Chairman address it to:

Change Control Process
Change Control Form
CPWG Change Control List

Refresh of Standards Items

Illinois EDI Implementation Guides
Ameren EDI Testing Scripts for Electric
Ameren EDI Testing Scripts for Gas
ComEd EDI Testing Scripts
NAESB model business practices and EDI standards are posted to the Illinois Commerce Commission’s Office of Retail Market Development (ORMD).  The NAESB EDI standards are specifically found in item 1.3.
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