Entities reentering as a Market Participant (MP)

  • A new Entity Code is required to participate in the MISO market. Unfortunately, your old one cannot be re-used.
  • MISO systems are built on the premise that every MP has a unique Entity Code, even if they should return to the market. * *    Our database does not allow for re-activation and it will not allow us to create another instance of the entity code.
  • MISO Entity Codes cannot exceed 4 characters
  • The Market Participant Entity Code must be registered (and in approved status) in OATI WebRegistry.

More information can be found here: Home  Past Events  2021  Market Participant Certification Workshop - March 4, 2021