Skip to Main Content

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,

Notice of Process Change:

Our online interconnection application form and portal will be temporarily unavailable from February 24, 2025 - February 26, 2025. This is in preparation for the launch of our new online portal, which will feature enhanced communication capabilities, improved user experience, and more streamlined processes. Learn more about the new portal here.

Please note that existing projects will be transferred to the new system, and your Unitil representative for these projects will remain the same.

During this transition, we appreciate your patience. All information and data will continue to be securely stored. If you have any questions, feel free to contact us by emailing generator@unitil.com.

Interconnection Application Form

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

Application Form

Attention:

This portal will be temporarily removed 2/24/2025 - 2/26/2024 in order to launch the new online portal. Learn more here.

   

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.