Claire WhitakerBy Claire Whitaker

The nb power net metering program lets New Brunswick homeowners with rooftop or small ground-mounted solar connect to the grid and receive credit for the electricity they send back. This guide walks you through eligibility, the application process, system requirements, and how credits appear on your bill, so you can plan a system that works with the program rather than against it.

What the NB Power Net Metering Program Does

Net metering means your home is connected to the utility grid through a bidirectional meter. When your solar array produces more power than your home uses at that moment, the excess flows onto the grid. When your home needs more power than your panels provide, such as at night, you draw from the grid as usual. Over a billing period, the utility nets these flows against each other and bills you only for the net consumption, with any surplus carried forward as a credit under the program’s terms.

Shopping for one? See our guide: Net Metering Solar Program vs Self-Consumption: Which Is Better for Homeowners?.

The practical effect is that your meter does the accounting for you. You do not need a separate battery to store daytime production, and you do not sell power on an open market. You simply use the grid as a free storage system, subject to the rules set by the utility and the provincial regulator.

Program details, rate structures and system size limits can change, so always confirm the current terms directly with NB Power before you finalize equipment or contracts.

Step 1: Check Whether Your Home Qualifies

Before you price out panels, confirm the basics. Most distributed generation programs look at a short list of factors:

  • Your home or property must be an existing NB Power customer with an active account.
  • The system must be intended to offset your own load, not to generate power for resale.
  • The system size should be sized to your own consumption, typically assessed against your last 12 months of usage.
  • Your service must be capable of supporting a grid-tied inverter, which your installer will verify.
  • The system must meet the technical interconnection standards referenced by the utility.

Pull up at least 12 months of your NB Power bills. Total the kilowatt-hours and divide by 12 to get your average monthly use. This number drives system sizing and is the first thing an application reviewer will look at.

Step 2: Size Your System Against Your Usage

Sizing is where many homeowners go wrong. A system far larger than your annual consumption may be treated differently under the program’s rules, and oversizing rarely pays off when credits are not paid out in cash at full retail value. A simple way to start:

  1. Take your annual consumption in kilowatt-hours from your bills.
  2. Estimate specific yield for your location. In the Maritimes this is usually lower than in sunnier regions, so use a local figure from a tool such as NREL’s PVWatts calculator or your installer’s modeling software.
  3. Divide annual consumption by specific yield to get a rough system size in kilowatts.
  4. Adjust downward for shading, roof orientation, and tilt losses. A south-facing roof at a moderate pitch gives the best output; east or west faces often lose 10 to 20 percent.

Aim to produce roughly what you consume over a year, not more. This keeps your credit balance from building up in ways that may not benefit you.

Step 3: Choose an Installer and Equipment

NB Power generally expects systems to be designed and installed by qualified electrical contractors who understand the interconnection requirements. Ask prospective installers:

  • Have they completed interconnection applications with NB Power before?
  • Which inverter models are they proposing, and are those listed as grid-tied and compliant with current interconnection standards?
  • Will they provide a single-line diagram and a production estimate based on your actual roof?
  • Do they handle the paperwork, or will you need to submit it yourself?

Equipment is usually a combination of solar modules, a grid-tied inverter, mounting hardware, disconnects, and a production meter or monitoring system. Make sure the inverter includes anti-islanding protection, which shuts the system off during grid outages so it does not energize lines that utility crews are working on.

Step 4: Submit the Application

The application process typically follows this sequence:

  1. Submit a pre-application or inquiry describing your system size, location and equipment.
  2. Receive utility review feedback, which may request revisions to the single-line diagram or equipment specifications.
  3. Obtain your electrical permit and any required municipal approvals.
  4. Have the system installed by your contractor.
  5. Schedule an inspection, then request the utility’s approval to interconnect.
  6. Receive permission to operate (PTO), and have the bidirectional meter installed or upgraded if needed.

Do not turn on the system before you receive written permission to operate. Energizing an unapproved interconnection can void your agreement and create safety hazards.

Step 5: Understand How Credits Appear on Your Bill

Once the system is running, your bill will show imported and exported kilowatt-hours. Read it carefully the first few months. Look for:

  • Total consumption drawn from the grid
  • Total energy exported to the grid
  • Net energy billed for the period
  • Any credit balance carried forward

Credits are generally applied against future consumption charges. Track them monthly so you know whether your system is oversized or undersized relative to your household use. If you see a large balance building through the summer, that is a signal to consider adjusting your loads, such as moving water heating or EV charging to midday hours.

Net Metering Versus Other Options

Net metering is not the only way to receive value for solar power. Depending on the program in place where you live, you may instead be paid for exported energy at a separate rate, or you may participate in a larger community arrangement. The table below summarizes the general trade-offs.

Feature Net metering Separate export payment
Main benefit Exports offset your own usage Exports are paid directly
Best for Homes that use most of their solar on site Homes with large midday surpluses
Bill impact Reduces the net amount you pay Adds income separate from your bill
Main risk Credits may roll over without full cash value Export rates can change over time

Confirm which arrangement applies to your account before signing a contract, since terms differ by utility and by program year.

Common Mistakes

  • Oversizing the array. Systems much larger than your annual use can leave you with credits you cannot easily use.
  • Ignoring shading. A single chimney or tree can cut output far more than expected. Measure shading across the full day and season.
  • Skipping the pre-application. Equipment bought before the utility reviews your design may need to be replaced.
  • Energizing too early. Wait for written permission to operate.
  • Forgetting about roof life. If your roof needs replacement within a few years, replace it before installing panels, not after.
  • Not monitoring production. A monitoring app lets you spot a failed string or inverter fault quickly, before it costs you months of output.

Tips for Getting the Most From Net Metering

  • Shift flexible loads such as laundry, dishwashing, and EV charging to daylight hours.
  • Compare your production estimate with actual output during the first summer to validate your sizing.
  • Keep a folder with your interconnection agreement, single-line diagram, inspection reports and permission to operate letter.
  • Re-check program terms at least once a year, since rules can change.
  • If you plan to add a heat pump or EV later, factor that load into the system size from the start.

A few types of equipment help homeowners manage a grid-tied system day to day. Your installer should specify the exact models that meet NB Power’s requirements, so use these as general categories when shopping for accessories.

  • Solar production monitor — A monitoring gateway or smart plug-based energy monitor lets you see real-time generation and daily totals, which makes it easier to spot underperformance. View on Amazon
  • Clamp-on current meter — A basic clamp meter helps you check circuit loads and verify that household consumption matches what your bills show. View on Amazon
  • Weatherproof disconnect and labeling kit — Clear labels on disconnects and a laminated single-line diagram near the meter help firefighters and utility crews work safely. View on Amazon

FAQ

Do I need a battery for the nb power net metering program?

No. Net metering uses the grid as your storage. A battery is optional and usually only worth adding if you want backup power during outages or want to shift usage beyond what the grid credit arrangement provides.

How long does the application process take?

Timelines vary with utility workload, permit scheduling and installer availability. Plan for several weeks to a few months from application to permission to operate, and build that into your installation schedule.

Can I add more panels later?

Usually yes, but any increase in system size generally requires a new or amended application and a fresh review. Check with NB Power before buying additional modules.

What happens to credits if I move?

Treatment of credit balances at account transfer depends on current program rules. Ask NB Power how a remaining balance is handled before listing your home for sale.

Will my system work during a power outage?

A standard grid-tied system shuts down during outages for safety. Backup power requires a separate battery system or a backup-capable inverter design, and the installer must configure it correctly.

Do I need a licensed electrician?

In most cases, yes. Electrical work on a home service and interconnection typically requires a licensed contractor and a permit. If you have doubts about any step, consult a licensed professional before proceeding.

Are credits paid out in cash?

Credits are typically applied against future bills. Whether any remaining balance is ever paid out depends on the program terms in effect, so confirm this directly with NB Power.

Where can I find the official program rules?

Start with NB Power’s website and their distributed generation or net metering information pages. Your installer and the provincial energy regulator can also point you to current documentation.

Conclusion

The nb power net metering program can make a home solar system far more valuable when it is sized to your real usage and installed to the utility’s standards. Gather your bills, get a realistic production estimate, and work with an experienced installer who handles interconnection regularly. Keep an eye on your monthly credits and production data, and revisit program terms each year so your system keeps delivering the savings you planned for.

Ready to choose one?

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.