Claire WhitakerBy Claire Whitaker

Updated November 2026

Eversource net metering in New Hampshire lets homeowners with a grid-tied solar system send extra electricity to the grid and receive bill credits for it. This guide walks you through the application process, how credits are applied to your bill, and the paperwork that trips up most first-time applicants. By the end, you will know what to submit and what to expect after your system is switched on.

Confirm Your System Qualifies

Before you apply, check that your installation meets the basic requirements. Net metering in New Hampshire is generally available to residential systems that are connected behind your meter, use an inverter certified to the IEEE 1547 and UL 1741 standards, and stay within the size limits set by the state. Systems are typically sized to offset your own annual usage rather than to produce large surpluses. If you are still weighing which billing structure fits your home, read Net Metering in NH vs Net Billing: Which Is Better for Homeowners? first.

Shopping for one? See our guide: Eversource CT Net Metering vs Net Billing: Which Is Better for Your Home?.

Submit Your Interconnection Application

Every grid-tied system needs an interconnection application before it can be energized. You, or your installer on your behalf, submit it to Eversource. The utility reviews the design, the equipment specifications and the single-line diagram, then issues approval. Do not turn on the system or start operating it before you receive written permission to interconnect, because doing so can delay or void your agreement.

What to Include With Your Application

  • Your account number and service address as they appear on your bill
  • The system size in kilowatts (DC and AC ratings) and the number of panels
  • Inverter make, model and certification documentation
  • A single-line electrical diagram showing the array, inverter, disconnect and meter
  • Your installer’s license number and contact information

Install the Required Meter and Disconnect

Eversource generally needs a bidirectional meter that records both the power you draw from the grid and the power you export. Schedule the meter change after your application is approved and before final inspection. You will also need a visible, lockable AC disconnect near the meter so utility crews can isolate your system during outages. Local electrical inspection must sign off on the installation before the utility will complete the final interconnection.

Understand How Your Credits Are Calculated

Once your system is running, excess generation rolls into bill credits that offset future consumption. The details of rate structure and credit valuation are covered in Eversource Net Metering Rates: How Your Solar Credit Is Calculated. Keep in mind that credits typically carry forward month to month, and any remaining balance may be settled on an annual basis. Watch your first few bills closely to confirm that export is being recorded.

Stage What You Do What Eversource Does
1. Application Submit design and equipment details Reviews and approves interconnection
2. Meter change Schedule installation after approval Installs bidirectional meter
3. Inspection Pass local electrical inspection Verifies safety and wiring
4. Activation Energize the system only after approval Enrolls account in net metering

Common Mistakes

  • Energizing the array before receiving written interconnection approval.
  • Submitting a single-line diagram that does not match the installed equipment.
  • Forgetting to update your account if you change installers or equipment.
  • Assuming the first bill will show credits immediately; meter reads and billing cycles can lag.
  • Skipping the lockable disconnect, which can stall final approval.
  • Digital multimeter: Useful for checking voltage and continuity at the disconnect before your inspection. View on Amazon
  • Lockable AC disconnect enclosure: Helps you meet the visible, lockable disconnect requirement at the right location. View on Amazon

FAQ

Do I need a bidirectional meter for Eversource net metering?

In most cases, yes. A bidirectional meter records both imported and exported electricity, which is needed to calculate your credits accurately. Eversource typically arranges the change once your application is approved.

Can I start using my solar system before I get approval?

You should not. Energizing a grid-tied system before written interconnection approval can violate your agreement and delay your credits.

How long does the process take?

Timelines vary with application volume and inspection scheduling. Your installer can give you a realistic estimate based on current utility workloads in your area.

Conclusion

Getting credited under Eversource net metering in New Hampshire comes down to a clean application, the right meter and disconnect, and waiting for written approval before switching on. Keep your documentation organized and confirm each stage before moving to the next. If anything in your design is unclear, a licensed installer or electrician can review it before you submit.

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Claire Whitaker

About Claire Whitaker

Claire Whitaker is part of our editorial team and reviews and edits our home solar guides, checking product details against manufacturer specifications and owner feedback.