National Grid packet checklist

Sample preview — compiled from public sources 2026-08-19

The structural contents of a National Grid upstate New York interconnection packet under the NYS Standardized Interconnection Requirements. Every form and appendix reference below should be checked against the SIR revision in force before filing.

• Standardized SIR application — inverter-based or non-inverter-based appendix form confirm current revision — submitted through National Grid's nCAP portal
• SIR application-package checklist items (Appendix F confirm current revision)
• Customer authorization tied to the correct National Grid account and service point
• Single-line diagram; three-line detail where required for three-phase or storage designs
• Equipment spec sheets — inverters certified to UL 1741 (supplement SB) with settings per National Grid's ESB 756
• Site plan
• Property-owner consent and site-control certification where applicable (SIR appendices)
• Energy storage systems: the ESS application requirements appendix (SIR)
• Application fee where applicable — none for systems 50 kW or less per the SIR; verify current schedule above 50 kW

The structural contents of a National Grid Massachusetts DG interconnection packet under the DPU-approved Standards for Interconnection of Distributed Generation. Check exhibit references against the tariff revision in force.

• Simplified Process application (tariff Exhibit A — includes the agreement) or Expedited/Standard application (Exhibit C) confirm current revision
• Pre-application report (Exhibit B) — optional below 250 kW, required at 250 kW and above for Expedited/Standard filings
• Interconnection Service Agreement for Expedited and Standard projects (Exhibit G)
• Single-line diagram and equipment spec sheets for listed inverters
• Landowner consent agreement where applicable (Exhibit I)
• Schedule Z — additional information required for net metering service
• Application fee per the tariff fee schedule — $28 Simplified; $4.50/kW (min $300, max $7,500) Expedited/Standard verify current schedule

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