To ensure fair, efficient, and competitive markets, MISO requires organizations to register as Market Participants before participating in our Open Access Transmission, Energy and Operating Reserve Markets. As a Market Participant, your company becomes a legal entity certified by MISO to submit bids to purchase energy, submit offers to supply energy and operating reserve, hold financial transmission or auction revenue rights and other market-related activities.
This page provides instructions on how to apply to be a MISO Market Participant. If you are interested in participating in the MISO Generation Interconnection queue, you do not need to register as a Market Participant first. Please refer to the Generator Interconnection Queue webpage instead.
Use the Document Navigator below to access many of the resources needed to manage your Market Participant Status.
Opportunities to Join as a Market Participant
The online Market Participant registration tool is only accessible through our secure Market Portal so you’ll need to complete a few steps before you can begin your registration. There are no application fees to become a Market Participant. However, you will incur costs when registering with OATI webRegistry, obtaining digital certificates, and posting collateral with MISO to meet your credit requirements.
1. Ensure the Minimum Participation Requirements are met before applying
The OATI webRegistry (system of record for electric industry information), described in Step 3, requires a DUNS number.
Note: Check with OATI WebRegistry for a list of accepted certificate vendors.
4. Obtain a Digital Certificate
MISO requires a client-side digital certificate from one of three MISO trusted Certificate Authorities.
Please refer to Client Certificates and DN strings Knowledge Article for additional information.
Complete the form and send it to MISO via the MISO Help Center. To do so, submit an access request to MISO Help Center and put External Description as “MISO Help Center account needed to submit form for Online Registration Tool.” Please complete the form and return to MISO by creating a case in the Help Center and attach the form as a document in your case.
We developed an online tool to help you register as a Market Participant. You can access the tool as soon as we process your system access request.
You are required to complete online sections and submit legal documents based on intended market activities. The type of market activities that you identify during the application process determine your rights and obligations under the Tariff, so please read the directions carefully.
7. Email Required Legal Documents
The legal documents required for your organization are in the online registration tool. Download the listed documents, obtain the necessary signatures, and send them back by creating a Help Center case and attaching them as documents in the case. Reference your entity code in the external description.
8. Credit Approval
After receiving the completed application, the Credit team will ensure that the applicant has met all of MISO's minimum requirements and has suitable collateral in place. For additional information regarding MISO's credit requirements, please visit:
9. Certification Deadlines
Certification occurs after credit approval and when the model is loaded, 7-10 days prior to the effective date.
Certified Market Participants who qualify for supplemental registration initiatives must submit the necessary documentation that corresponds to Tariff Schedule requirements. Please note beginning June 1, 2021, the actual Attachment B form is no longer required for supplemental registrations. Both MP’s and Non-MP’s will need to submit their changes via the Help Center.
Reactive Supply and Voltage Control (Schedule 2)
Upon request and with FERC approval, MISO provides compensation to Market Participants who have a Qualified Generator that provides reactive power and voltage control. Required documents include:
Station Power Service (Schedule 20)
Market Participants who are eligible to provide Station Power Service under Schedule 20 may register for service through On-Site Self-Supply, Remote Self-Supply, or Third-Party Supply. Required documents include:
Emergency Demand Response (Schedule 30)
Market Participants who have the capability to reduce load or operate back-up generation resources during emergency conditions can register those resources as Emergency Demand Response. Required documents include:
Blackstart Service (Schedule 33)
Certified Market Participants may register a Blackstart Unit if you have received FERC approval and meet criteria established in Schedule 33. You must commit to a minimum term of a continuous 3-year period and your unit must be tested periodically in accordance with NERC System Restoration and Blackstart reliability standards. Required documents include:
The Commercial Model contains information used to identify assets, collection of asset ownership, and representative Market Participants. It also defines all of the locations where prices are established and used for business transactions in MISO markets.
Market Participants are responsible for maintaining their Commercial Model representation and must follow established Network and Commercial Model deadlines for all additions and changes.
For new Market Participants, all additions, changes, and transfers of Commercial Model assets require the following document, which must be attached to the MCR within the MISO Model Manager (MMM):
For an overview of changes that can be submitted into the Commercial Model, please see below. And, for a complete list of parameters associated with each type of Commercial Model resource, refer to BPM 010 - Network and Commercial Models, Attachment E.
An Asset Owner can have any combination of generation and load but ownership of a physical asset is not required. Market Participants may add, transfer, or terminate its Asset Owner representation. Please attach the below document to the submitted MCR within the MISO Model Manager (MMM).
Market Participants may add or transfer resources capable of providing Generation. This includes generation resources, combined cycles, and external asynchronous resources. Market Participants may add or transfer a Commercial Pricing Node to represent the resource in the market. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
A Load Zone is a collection of elemental pricing nodes (which will correspond to the CPNodes which represent Load Zones), and, are considered assets and must be assigned to an Asset Owner. The CPNode to EPNode relationship for these is typically one to many except for isolated municipal or industrial load assets that have only one elemental load point in the Network Model. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
* Note: Any request to create a Load Zone shall have approvals from the Local Balancing Authority.
DRR Type I are typically customer programs such as industrial interruptible load programs, controlled appliance programs and other load reduction programs capable of providing a specific amount of Energy or Contingency Reserve into the MISO Market through physical load interruption. Market Participants may add or transfer a Commercial Pricing Node to represent the DRR Type I in the market. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
DRR Type II are typically behind the meter generators or highly controllable load processes capable of receiving electronic dispatch instructions to supply a range of Energy and/or Operating Reserves. Market Participants may add or transfer a Commercial Pricing Node to represent the DRR Type II in the market. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
SER Type I is capable of supplying Regulating Reserve, but not Energy or Contingency Reserve, through short-term storage and discharge of Electrical Energy. Market Participants may add or transfer a Commercial Pricing Node to represent the SER Type I in the market. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
SER Type II is capable of supplying Energy, Capacity, Spinning Reserve, Supplemental Reserve, Regulating Reserve, Up Ramp Capability, and/or Down Ramp Capability, through the storage and discharge of electrical Energy. Market Participants may add or transfer a Commercial Pricing Node to represent the SER Type II in the market. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
A time-varying energy transfer that is updated in Real-time and included in the Actual Net Interchange term (“NIA”) in the same manner as a Tie Line in the affected Balancing Authorities’ Reporting Area Control Error (“ACE”) equation (or alternate control processes). Pseudo Ties can be considered NEW, Modify Path or Volume, Reinstate or Terminate for either Load or Generation. The entire process is explained in much greater detail, by reviewing BPM 030 – Pseudo Ties. Please attach the below documents to the submitted MCR within the MISO Model Manager (MMM).
It is the responsibility of all Certified Market Participants to ensure data is kept current and that any change(s) to such data is submitted to MISO according to any stated deadlines. Failure to notify MISO of a change in information within stated deadlines may result in the change not being implemented within the requested timeframe.
Both Market and Non-Market Participants will need to utilize the new MISO Help Center for keeping their data current. You are required to notify us of changes such as:
All Commercial Model dependent changes require the submission of the Master Commercial Model Data Template change template. We must also receive an Attachment B - Change of Information Document in accordance with the Network and Commercial Model deadlines.
Please complete and sign this form if you wish to terminate your Certified Market Participant status. MISO must receive the request no later than five (5) business days prior to the requested termination date.
You may reapply to become a Market Participant no earlier than one (1) month after the effective date of termination, and only provided that you are not in default of any obligation incurred under the Tariff.