Follow these steps to submit a U.S. Footprint Change Request:For Generator Owners and/or Generator Operators, please follow these steps to submit a footprint change request in CORES.

1. Go to the NERC ERO Portal.
2. Sign into your ERO Portal Account by selecting “My Account” and then “Sign In.”
3. Access the Centralized Organization Registration ERO System (CORES) for your entity by selecting the “My Entity” option and then “CORES” from the dropdown menu.
4. Click on “Comments and Attachments” and then enter and save a comment with a description of the changes to your footprint(s) associated with any of your entity’s reliability function(s), devices, and/or assets. Include a completed Generator Registration
Questionnaire and associated documentation.
5. Send email to [email protected] notifying WECC you’ve entered a comment in CORES with a description and documentation of your Footprint Change Request.
6. Respond to any subsequent Registration Data Requests from WECC to provide additional information or documentation needed to process the request.

For new entities registering as a Generator Owner and/or Generator Operator, please follow these steps to submit a registration request.

1. Go to the NERC ERO Portal.
2. Sign into your ERO Portal Account by selecting “My Account” and then “Sign In.”
3. Access the Centralized Organization Registration ERO System (CORES) by selecting "Entity Registration Requests".
4. Add a completed Generator Registration Questionnaire and associated documentation in the "Comments and Attachments" section.
5. Submit the request.
6. Respond to any subsequent Registration Data Requests from WECC to provide additional information or documentation needed to process the request.