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Apply for Interconnection

Begin the process of generating your own power.

Start by finding your desired address on your state's Interconnection Hosting Capacity Map.

Then, use the Interconnection Application Form below to create a new account or sign in to an existing account. You may submit multiple applications under one account and you will be able to save and edit your progress of each application up until it's successfully submitted.

As you start answering questions, our intuitive form will determine which application you will need to complete. When your application has been submitted, a Unitil representative will review and follow up as needed.

Interconnection Application Form

As you complete the application, we have included simplified instructions to guide you along the way. 

Application Form

Document Uploads

Please upload all supporting documents using our customer generation Documentation Upload Portal.

Once the generator is installed, photos and a Certificate of Completion must be signed by the local municipal inspector and submitted to the Unitil office through the Documentation Upload Portal.

For MA applicants only: Access the tariff here (PDF) that outlines the application process in detail with complete instructions.