Operations Documentation

The information provided below will assist you in connecting to the transmission system. 

Massachusetts, New England areas:

• 2025 MA National Grid ROW YOP (pdf)
• 2025 MA National Grid ROW YOP Maps (pdf)
• 2024 MA National Grid YOP (pdf)
• 2024 MA ROW YOP Maps (pdf)
• 2024 MA YOP Herbicide Labels (pdf)
• 2024-2028 MA National Grid 5 Year VMP (pdf)
• Information and Requirements for Electrical Service (pdf)
• ISO New England Inc. Transmission, Markets and Services Tariff
• ISO-New England interconnections documents
• ISO-NE Operating Procedures (for Procedures #17 and #18)
  
  

New York State:

• National Grid in New York Electric Specifications 
• NYISO Transmission Expansion and Interconnection Manual (pdf)
• NYISO System Reliability Impact Study Criteria and Procedures
• NYISO Market Administration and Control Area Services Tariff
  
  

Applicable to National Grid's New York State and New England areas:

• Transmission Network Performance Report - Fiscal Year 2008 (pdf)
• Requirements for Parallel Generation Connected to a National Grid Owned EPS (pdf) (ESB 756)