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IF YOU SUSPECT A GAS LEAK, LEAVE THE AREA IMMEDIATELY AND CALL UNITIL AT THE NUMBER BELOW FROM A SAFE LOCATION.

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Please call

888-301-7700

View all contact numbers here.

Please call

888-301-7700

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IF YOU SUSPECT A GAS LEAK, LEAVE THE AREA IMMEDIATELY AND CALL UNITIL AT THE NUMBER BELOW FROM A SAFE LOCATION.

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Requirements for Interconnections

Unitil must comply to requirements specified by the New England Independent System Operator (ISO-NE).  The requirements below are for all inverter-based generating units interconnecting with any electric distribution or transmission system in New England.

ISO New England Source Requirements

 

6 Steps to Interconnection

To make the interconnection process easier, Unitil has created an online application system that will determine which application is right for you. Read through the steps below to understand the full process and when you are ready, you can start or resume your online application HERE.

Throughout your application process, you will be asked to submit supporting documentation when neccessary. Please submit all completed documents through Document Upload Portal.

Here are a few things you and your contractor should know:

 

 
Step 1:

Start your application process when ready. Read the instructions and fill out the application thouroughly and accurately. An incomplete application can delay your request.

For customers connecting to radial electric power systems with power ratings up to 15 kW single-phase or up to 25 kW three-phase, or connecting to an area or spot network with a power rating of up to 15 kW single-phase, please review the instructions below and submit an application.
For customer systems with power ratings up to 100 kVA, we will direct you to the Simplified Application. For customer systems greater than 100 kVA, you will be directed to the Pre-Application Form. Please include payment of $500 for processing of the Pre-Application. After submittal, you will need return to fill out the Standard Application. There is no fee required for processing of the Standard Application. Mail checks to:

Unitil
ATTN: Generator Interconnection
6 Liberty Lane West
Hampton, NH 03842

 
Step 2:

Upload any neccessary supporting documents securely using our customer generation Document Upload Portal. Within ten business days, a Unitil representative will respond to let the applicant know if the application is complete, or if there are required steps needed to complete your application. For single phase systems up to 15 kW or three-phase systems up to 25 kW, Unitil will notify the applicant of the approval to install, or any system modifications required to allow for the installation  within tenfifteen business days after the application is considered complete. For larger systems, please contact Unitil to discuss your project.


 
Step 3:

Once the applicant has received installation approval from Unitil, be sure to share this information with the vendor or installer.


 
Step 4:

Once the generator is installed, please submit photos of the intsallation and the Certificate of Completion signed by the local municipal wiring inspector to our office through the customer genration Document Upload Portal.


 
Step 5:

After receipt of the applicant's signed Certificate of Completion, Unitil will notify the applicant of certification documents or witness test requirements. Once these requirements are met, Unitil will install the appropriate meter(s). At this point, the applicant will be notified of approval to use the generating system.


 
Step 6:

Use this approval form to qualify for state and federal rebates and enjoy the benefits of renewable generation! A monthly bill will show an “Other Credits” line item, listed near the bottom if the system generated more electricity than was used in that billing period. If the system did not generate excess energy (more than the monthly consumption), the customer will not see this credit.


 

Applications

Before installing your own renewable energy system, read the instructions and fill out the appropriate application.

 

Tips & Resources

View tips and resources on how to streamline the process of interconnection.

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