Attend an Electric Supplier /Broker Training Session. To register, please contact the sponsoring utility contact person available on the 2025 Supplier/Broker Training Schedule (pdf).

Complete the Electric Supplier License Application, available on the Department of Public Utilities website. You will have to submit this to the Department of Public Utilities.

• Please provide three signed original copies of the Competitive Supplier Agreement (pdf)
• Visit the ISO New England website for a copy of the ISO-NE Market System Asset Registration Form.
• Use this information to complete the form: National Grid Information for the ISO-NE Market System Asset Registration Form (pdf)

Complete the EDI Pre-Testing Worksheet (pdf) and provide three signed original copies. Please note that a minimum of three weeks is typically required to establish a start date for system testing.

Additional Information:

• EBT Testing Standards (doc)
• EBT Test Plan Overview (doc)
• EBT Test Conditions and Descriptions (xls)
• EDI Specific Testing Conditions (pdf)

Complete the EDI Testing Policy (pdf) and provide two signed original copies. There are certain circumstances under which parties who would normally have to test EDI will now have to only do a limited EDI test (EDI connectivity into production testing). Those circumstances are listed in the policy.

Complete the Supplier Participation and Acknowledgment Agreement (pdf) and provide three signed original copies. This will enable you to be listed on our website as an active Supplier/Broker. Please note that being listed on our website requires abiding by the terms and conditions contained in the Agreement.

To review our Energy supplier lists:

• Business: Energy Supplier List
• Residential: Energy Supplier List

Complete the ACH Payment Authorization Form (pdf) with the W9 Form (pdf) and provide three signed original copies. This authorizes National Grid to initiate credit entries to the account specified on the form.

Complete the Approved Supplier Enrolment Form (pdf) and provide two signed original copies. This application should be submitted with the ACH Payment Authorization Form and the W9 Form.

Complete the MA Nantucket Electric Payment Authorization Form (pdf) and provide two signed original copies. The purpose of this form is to provide National Grid with a notice that the ESCO wishes to forward its rights to payments to a Third Party. For example, an ESCO may wish to forward its POR payments to a bank (or another ESCO) in order to repay a business loan.