In our New York jurisdiction, National Grid's subsidiary company, Niagara Mohawk Power Corporation (NMPC) owns the transmission assets that provide wholesale transmission network service to those customers interconnected and looking to interconnect to our systems.

As of May 2024, the New York Independent System Operator (NYISO) will undergo a realignment of its interconnection process to comply with the Federal Energy Regulatory Commission (FERC) Orders 2023 and 2023A. The provided information will be regularly updated and adjusted to reflect these forthcoming changes

Technical

• Transmission TGP28 Issue 6, 05/09/2023 (pdf)
• Land Use Application Form: Wholesale Generation/Transmission Projects (pdf)
• National Grid Local Transmission Plan 2023 (pdf)
• Developer Telecom Order Forms (xls)
• Electric Specifications
• Study Data Request Form

Real Estate

• Third-Party Acquisitions and Transfer of Real Property (pdf)
  
  

Commercial/Financial

• Transmission Agreements Creditworthiness Policy (pdf)

NYISO Information

• NYISO Interconnection Project Portal
• Transmission Expansion and Interconnection Manual
• Transmission Expansion and Interconnection Guide
• Interconnection Process
• NYISO Learning Links
• The following tariff attachments may be referenced regarding Planning and can be viewed by accessing the Tariffs, FERC Filings & Orders.