How Does Net Metering Work With Solar? A Step-by-Step Guide

By Ethan Brooks

Net metering is the billing arrangement that lets a home with rooftop solar send surplus electricity to the grid and receive credit for it, usually at the retail rate. In this guide you will learn how does net metering work with solar, step by step: how the meter tracks power flowing in both directions, how credits are applied to your monthly bill, what happens when you produce more than you use over a year, and what to check before you sign up.

The Short Answer: One Meter, Two Directions

A net meter is a bidirectional meter that records two readings: electricity you pull from the utility (import) and electricity your panels push back to the grid (export). Your bill is based on the difference between those two numbers over the billing period. When your panels make more than your house uses, the extra flows out and earns credit. When your house uses more than your panels make, you draw from the grid as usual and pay for the difference.

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

Step 1: Understand the Meter Setup

Before any credits make sense, you need to know what your meter is doing. Most grid-tied homes with net metering have a single bidirectional meter installed by the utility, sometimes replacing an older analog meter. Some utilities use two meters, one for import and one for export, but the billing logic is the same.

What the Meter Records

• Imported kWh: energy your household pulls from the grid, for example at night or on cloudy days.
• Exported kWh: energy your system sends out when production exceeds your immediate use.
• Net kWh: imported minus exported. This number drives your charges.

Your inverter converts the panels’ direct current into alternating current that matches the grid. Any power your home does not consume instantly flows through the service panel and out to the grid. The meter simply counts it.

Step 2: Follow the Flow of Energy in a Typical Day

Here is how the process plays out over 24 hours for a typical grid-tied home: If you want more background, see DIY Solar System Basics: How the Parts Work Together.

1. Morning: Production rises, but a refrigerator, lights and a coffee maker use some of it. Excess power exports, and the meter logs it.
2. Midday: Peak production. Your home may use only a fraction of what the panels make, so exports climb.
3. Evening: Production falls while cooking, heating or cooling loads rise. Imports begin.
4. Night: Panels produce nothing, so every kilowatt-hour you use comes from the grid and is recorded as an import.

Because exports from midday can offset imports at night, the bill reflects the net total rather than each moment separately.

Step 3: See How Credits Are Applied to Your Bill

How a credit is valued depends on your utility’s tariff. Two models are common:

• Full retail net metering: each exported kWh is credited at the same rate you pay for imported kWh. This is the most generous structure and is less common in newer programs.
• Avoided-cost or export-rate credits: exports are credited at a different, often lower, wholesale or time-varying rate. Many utilities now use time-of-use export rates, so power sent out at peak hours can be worth more than power sent out at midday.

Most utilities also charge a fixed monthly connection fee regardless of net usage. Read your tariff sheet to see whether credits can offset that fee or only the energy portion of your bill.

Step 4: Handle Excess Production Over the Year

What happens when your panels overproduce across a whole month or year varies by state and utility. Common approaches include:

• Monthly rollover: surplus kWh carry forward as a credit balance for the next bill.
• Annual true-up: credits roll over month to month, then are settled once a year. Any leftover balance may be paid out at a set rate or carried forward.
• Net excess compensation: remaining credits at year end are paid to the customer, often at the wholesale rate.

Read the rules for your specific utility rather than assuming a model. Some programs cap system size or limit credits to a percentage of your annual load.

Example: A Simple Monthly Calculation

Suppose a home imports 600 kWh from the grid in a month and exports 450 kWh from its panels. Net usage is 150 kWh. At a retail energy rate, that net amount is billed, plus the fixed connection fee. If the same home exported 700 kWh and imported 600 kWh, it would have a net surplus of 100 kWh, which would typically roll forward as a credit, depending on the tariff.

Step 5: Check the Factors That Change Your Results

For guidance on matching system size to your household, see How to Size a Home Solar System in Kilowatts. To understand your baseline use, How to Read Your Household Electricity Use Before Going Solar walks through the numbers.

Step 6: Confirm Approval and Interconnection

You cannot simply turn on net metering. Your utility must approve the interconnection of your system and install or configure the bidirectional meter. The process typically includes an application, equipment specifications, a permit and an inspection. The Home Solar Installation Process: Permits, Inspections and Utility Approval covers those steps in detail, and How Grid-Tied Solar Works: Net Metering, Interconnection and Outages explains the broader grid relationship.

Step 7: Monitor Your Bills and Production

After installation, compare your monthly bill against your production data. Check that exports and imports look reasonable for the season. If your credits seem off, ask the utility for the meter readings and the tariff terms in writing. For troubleshooting, see Why Is My Solar Production Low? Normal Variation vs Real Problems.

Tools and Information You Will Need

1. Twelve months of utility bills to establish your baseline use.
2. Your utility’s net metering or distributed generation tariff sheet.
3. A monitoring app or inverter dashboard showing daily production.
4. Your system’s rated capacity in kilowatts and expected annual output.
5. A copy of your interconnection agreement.

Common Mistakes

• Assuming all credits are worth retail rate. Many programs now credit exports at lower or time-varying rates.
• Oversizing the system. Excess credits may be paid out at a low wholesale rate or lost at year end.
• Ignoring fixed fees. Connection charges remain even when your net usage is zero.
• Forgetting seasonal swings. Summer surplus may not fully offset winter imports under a monthly model.
• Not reading the interconnection agreement. Program rules, caps and deadlines are often set there.
• Relying on memory of old rules. Net metering policies change, and grandfathered rates may not apply to new applicants.

Tips for Getting the Most Out of Net Metering

• Ask your installer to model expected production against your real usage profile.
• If your utility uses time-of-use export rates, consider shifting heavy loads like laundry or EV charging to midday.
• Review your bill for the first three months to confirm credits are applied correctly.
• Keep records of meter readings, since you may need them if a billing dispute arises.

FAQ

Does net metering mean my meter spins backward?

Not necessarily. Modern bidirectional meters record imports and exports separately, so the display may not run backward at all. The utility still tracks both directions for billing.

Do I still pay a bill with net metering?

Usually yes. Most homes pay a fixed connection fee and any net energy charges. Credits may cover some or all of the energy portion, but fixed fees typically remain.

What happens to credits if I move?

Policies differ. Some utilities pay out remaining credits when you leave, while others forfeit them. Check your tariff or ask the utility before you move.

Can I use net metering with a battery?

Yes, in many areas. A battery can store daytime exports for use in the evening. Whether those exports are credited separately depends on the tariff and whether the battery is configured as part of the net metered system.

Is net metering the same as feed-in tariffs?

No. Net metering nets your exports against your imports on the same meter. A feed-in tariff pays a set rate for all output, often through a separate meter, regardless of your use.

Will my utility keep net metering forever?

Not guaranteed. Many states and utilities have revised or phased out full retail net metering. Your existing agreement may be grandfathered, but new applicants should check current rules.

Should I hire a professional to set this up?

For interconnection, permits and electrical work, a licensed installer or electrician is strongly advised. Consult your utility and a qualified professional before making decisions based on financial projections.

Conclusion

Net metering works by tracking the power you import from and export to the grid, then billing you for the net difference. Your bill and credits depend heavily on how your utility values exports, so read the tariff before assuming full retail credit. Sizing your system to your actual use and monitoring your first few bills will help you understand how the arrangement works in practice.

About Ethan Brooks

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