Harnessing the Power of the Sun

Did you know that every hour more energy from the sun hits the earth than the world uses in an entire year? Solar Photovoltaic (PV) systems absorb this energy and convert it into electricity. This electricity can be used to power homes and businesses.

Sizing a PV system to meet your needs is an important first step in determining your overall investment and payback. Your solar contractor will be able to assist you in sizing your system appropriately. While a system that is too big will increase your upfront capital costs and the amount of power you export to the grid. This will decrease the overall cost effectiveness of your solar investment while extending the payback period. Your current and future energy goals are key factors to consider. This step is a great time to consider improving your energy efficiency, or adding a heat pump or electric vehicle charger.

Net Metering



Net Metering


2024 Solar & Battery Interconnection Application

If you are planning to install an interconnection-facility and connecting to NHEC’s grid, you must receive approval from us.

This Application package assists us with evaluating your proposed interconnection-facility and to ensure its operation will not adversely affect our electrical distribution system.

Before you begin the application process…

Step 1 - Begin Your Application Process
  • Interconnection Application Form – This two-page form lists applicant, project site, generator, inverter data, contractor, and electrician info. Step 1 form must be fully completed, submitted, reviewed, and accepted by NHEC prior to installation. Incomplete forms will not be accepted.

Step 1 – 2024 Interconnection Application here

  • Battery Storage Form – Please complete this form before installing a battery storage/battery backup as part of your proposed interconnection facility or if you are adding to an existing interconnection facility.

Battery Storage / Backup Supplemental Form

  • One-Line Drawing – Please include a one-line diagram of the proposed interconnection facility installation.

One-Line Diagram Form

One-Line Drawing Example

Step 2 - Supporting Documents
  • Completion Forms – These forms must be submitted after the project is installed and tested by the electrician.
    1. Step 2 – Interconnection Application Completion Form
    2. Mutual Identity Agreement Form
    3. Renewable Energy Certificate Member Agreement
  • Photo documentation of the project is required to be submitted with Step 2.
    1. Central inverter and/or micro-inverter nameplate
    2. Battery equipment nameplate
    3. Utility-accessible disconnect
    4. Net meter & production meter equipment labeling as directed by Step 2
    5. Production meter equipment height measured with tape from grade
    6. Production meter equipment location showing no LP gas tanks or LP gas regulators within 10 feet.
  • Installer Completion Checklist – The completed checklist shall be submitted to NHEC with Step 2 (COC) by the solar contractor to initiate the inspection and meter swap scheduling by an NHEC technician

Installer Completion Checklist Form

Step 3 - Submit Your Documents
  • Submit general correspondence by email, mail, or fax to:

New Hampshire Electric Cooperative, Inc.
Attn: Scott C. McNeil
579 Tenney Mountain Highway
Plymouth, NH 03264
Phone – 603-536-8608 / Fax – 603-536-8698

Step 4 - NHEC Site Visit
  • We’ll visit the installation to check compliance with our standards. If compliant, we’ll replace the existing meter with a net meter that measures both energy used and excess energy produced. This initial visit is free of charge whether the system is compliant or not. If during our initial visit it is deemed the system is not compliant, notification will be made noting the steps to bring the system into compliance. Once updates are completed an NHEC technician must revisit to ensure compliance. For each return visit the member will be assessed a $320 interconnection site visit fee.

Calculating Solar

Hosting Capacity


Understanding Your Net Metering Bill


Other Considerations