Become a Member

Any Entity, upon compliance with such reasonable conditions as the Participants Committee may prescribe, may become a NEPOOL Participant by providing a duly executed counterpart of the NEPOOL Agreement, as amended, and payment of the applicable application fee. The process to become a ISO-NE Market Participant can be completed at the same time. In chronological order, the steps that must be completed are as follows:

1.  Complete and submit the following:      

Paper copy to:
    Attn: Membership Support
    ISO New England Inc.
    One Sullivan Road
    Holyoke, MA 01040-2841

Electronic copy to: 

Electronic copy to:  

Completed and delivered no later than 10 Business Days before the first of the intended effective date of membership:

Paper copy to:
Attn: Enterprise Risk Management
ISO New England Inc.
One Sullivan Road
Holyoke, MA 01040-2841

2. Wire Application Fee (email ISO-NE’s Billing Department ( for wiring instructions)

        • Application fee schedule 

3. Complete credit application and financial assurance review

Your credit application and applicable financial documents will be reviewed by ISO-NE Market and Credit Risk Department.  Any changes or additional materials should be promptly provided as requested. 

To estimate your company’s initial financial assurance obligation, please use this form. The Enterprise Risk Management Department will provide the definitive initial financial assurance obligation to the financial assurance contacts listed in the Membership Application.

Initial Financial Assurance must either (i) be deposited to your BlackRock account or (ii) an original Letter of Credit in the form provided in the ISO-NE Tariff from an Approved Letter of Credit Bank provided no later than 5 business days before the market entry month.

Once all requested materials have been submitted and reviewed, and any required amount of additional financial assurance provided, ISO-NE will issue to the Membership Subcommittee a Financial Viability Report.  The ISO New England Financial Assurance Policy provides ISO-NE up to three weeks to complete the Report from the time of receipt of all required documentation and financial assurance. 

4. Complete membership application review

Your membership application will be reviewed by the ISO-NE Membership Application Coordinator, ISO-NE Participant Support Membership Analyst (Mentor) and NEPOOL Counsel. Any changes or additional materials should be promptly provided as requested.  Once all requested materials are submitted and complete, Membership Subcommittee review (Step 5) will be scheduled.

5. Participate in NEPOOL Membership Subcommittee review 

The applicant should participate in the Subcommittee’s review of the application.  A schedule for the submission and Subcommittee review of applications is available here.  If approved, applicants must satisfy any conditions to such approval.  Applicants for Market Participant status will proceed to Steps 6 and 7; Governance Only Members need not complete Step 7.

6. Complete, execute and mail to Membership Coordinator:  

7. Complete, execute and mail to Membership Coordinator (if becoming a Market Participant):

Memberships become effective as of the 1st of the month that is 60 days from the completion of the steps outlined above (or sooner if applicants execute an indemnification agreement with NEPOOL and ISO-NE).

Contact Information:

Membership Support
(413) 535-4125

NEPOOL Counsel
Pat Gerity
(860) 275-0533

Market and Credit Risk Department
(413) 540-4400