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Interconnection Analysis Portal for Developers

We are excited to provide large-scale solar developers with Gridtwin’s cutting-edge interconnection analysis software, at no cost. If you are looking for your next commercial or ground-mount solar project, this software can be used to:

  • Understand interconnection costs within the Eversource service territory
  • Find suitable land for solar development
  • View Hosting Capacity Maps

The Gridtwin software also enables you to invite colleagues to join so that you can share information and collaborate.

Detailed instructions on creating an account, managing your company’s team and contact information for additional support can be found in our Interconnection Analysis Portal User’s Guide.

Additional helpful information on maximizing your experience of the portal can be found in this User Guide and Training Material document.

Log in or create an analysis portal account

If you already have an account on, be sure to enter different log-in information than you use to log-into Your account will be a separate account from your Interconnection Analysis Portal account.