By Claire WhitakerUpdated November 2026
Net metering in Arizona has changed over the past several years, and the old one-to-one credit is no longer the default for new rooftop systems. For most homeowners in the state’s large utility territories, the real choice is between staying on a legacy net metering arrangement and the newer export-credit structure most new customers face. If you already have grandfathered net metering and your system is sized for your household use, keeping it is usually the better deal. If you are planning a new installation, you should compare how each option values the power you send back to the grid before signing anything.
This comparison looks at the two main options Arizona homeowners encounter: traditional net metering, where exported energy offsets your usage at close to the retail rate, and export-credit or “net billing” style compensation, where exported energy is credited at a lower, time-varying value. The criteria below cover how each one works, where each one wins, and who should pick which.
Quick Comparison Table
| Criterion | Traditional Net Metering (Legacy) | Export-Credit Compensation (New Customers) |
|---|---|---|
| How exported power is valued | Close to the full retail energy rate, applied as a kWh offset | Lower avoided-cost style credit, often varying by time of day |
| Who typically qualifies | Customers already enrolled before the rule change | New interconnections under current utility tariffs |
| Effect of oversized systems | Extra exports roll forward as credits, with limits set by the utility | Extra exports earn a smaller credit, so sizing matters more |
| Battery pairing value | Less critical, since exports already earn strong credit | Often improves savings by shifting exports to higher-value hours |
| Predictability of savings | Easier to estimate from past bills | Depends on time-of-use rates and seasonal patterns |
| Best fit | Grandfathered customers with self-consumption near system output | New systems sized to daytime and evening load |
Compensation Rate for Exported Energy
This is the criterion that separates the two options most sharply. Under traditional net metering, every kilowatt-hour your panels push to the grid is credited against kilowatt-hours you draw later, at a value close to what the utility charges you for energy. That near-retail credit is why legacy customers often see their solar produce a large share of their bill savings.
Export-credit compensation pays a lower rate for power sent to the grid. Many versions use time-varying values, so midday exports during high solar output may earn less than evening exports. Your savings depend heavily on when your home uses electricity compared with when your panels produce it.
Winner: Traditional net metering, for any customer who can still access it. The higher credit rate makes a meaningful difference over a 25-year system life.
Eligibility and Enrollment
Traditional net metering is generally limited to customers who interconnected under the older tariff before the change. If you are not already enrolled, you usually cannot switch into it. Confirm your status by checking the rate schedule printed on your bill and asking your utility to verify your interconnection date in writing.
New customers typically enroll in the export-credit structure at the time of interconnection. The application process runs through your utility’s interconnection department, and you will generally need an approved system design, a signed interconnection agreement and an inspection before the utility installs its bidirectional meter. Start with the requirements in the step-by-step guide to net metering eligibility if you are unsure what documents to prepare.
Winner: Traditional net metering in terms of access, but only if you already hold it. For everyone else, the export-credit option is the only realistic path, so the decision becomes about system design rather than tariff choice.
System Sizing and Excess Generation
Sizing matters under both structures, but the penalty for oversizing is steeper under export-credit compensation. A common rule of thumb is to size the array to cover your annual kWh use, adjusted for shading and panel orientation. Under legacy net metering, surplus credits can often carry forward month to month, subject to the utility’s annual true-up rules. Under export-credit pricing, surplus exports simply earn less per kWh, so an oversized array pays back more slowly.
To check your own numbers, pull twelve months of usage from your utility portal and compare it with a production estimate from a reputable solar calculator. A system that produces 80 to 100 percent of your annual use is a reasonable target for most homes, though local rules and roof space will shape the final choice.
Winner: Traditional net metering is more forgiving of sizing mistakes. Export-credit systems reward careful design.
Battery Storage and Self-Consumption
Battery storage changes the math most under export-credit compensation. When exports earn less, it makes sense to store midday production and use it during expensive evening hours, which can shrink the gap between what you sell and what you buy. Under traditional net metering, the case for a battery is weaker, because every exported kWh already earns close to retail value. A battery may still be worthwhile for backup power or outage protection, but the savings argument is less clear.
Hybrid inverters with built-in battery support are common in this market, and they let you add storage later without replacing the core equipment. Our roundup of hybrid inverters with net metering options for homeowners covers which designs support these features.
Winner: Export-credit compensation for homeowners who can pair a battery and use it for time shifting. Traditional net metering wins for households that do not want the added cost and complexity of storage.
Long-Term Predictability and Bill Impact
Legacy net metering offers simpler long-term forecasting. Your past bills give a reasonable picture of what a system will offset, and rate changes affect both your usage and your credits in similar ways. Export-credit compensation adds more variables: time-of-use rate schedules, seasonal avoided-cost changes, and how your household’s load lines up with production.
Even with a well-designed system, a bill can stay higher than expected. Common culprits include evening usage that outpaces solar output, fixed monthly charges, and a meter read that does not match your net flow. If this happens to you, these six causes and fixes for a high net metering bill are worth working through before you assume the system is underperforming.
Winner: Traditional net metering for predictability. Export-credit compensation rewards homeowners willing to track usage patterns and adjust their habits.
Installation and Interconnection Timeline
Both structures require utility interconnection, but timelines vary by utility and by how complete your application is. Expect a process that includes a site assessment, a permit from your local jurisdiction, an interconnection application, a utility review, equipment installation, a city or county inspection, and finally permission to operate. Incomplete paperwork is the most common cause of delay, so double-check every form before submitting.
- Confirm your utility territory and rate schedule.
- Get a system design sized to your 12-month usage history.
- Submit the interconnection application and wait for written approval.
- Install the system and schedule the city or county inspection.
- Request the bidirectional meter and final permission to operate.
Winner: Tie, since both options follow similar steps. Choose the installer with the strongest track record of handling your specific utility.
Which Should You Choose?
- Choose traditional net metering if you are already enrolled and your system is sized close to your annual usage.
- Choose export-credit compensation with a battery if you are a new customer who wants to shift midday solar into evening hours.
- Choose export-credit compensation without a battery if your home uses most of its power during the day and you do not want storage costs.
- Choose a smaller system if your roof or budget limits you, since oversizing under export-credit rules rarely pays off.
- Consult a licensed electrician or solar installer before signing any interconnection agreement, because tariff terms and safety requirements both matter.
Recommended Equipment
Your choice of tariff affects which equipment makes sense, but the core components remain similar. Look for a bidirectional meter provided by your utility, a grid-tied or hybrid inverter that meets local interconnection standards, and panels with a manufacturer warranty. For homeowners who want to monitor production and consumption in real time, a standalone energy monitor can help you see exactly when your home uses and exports power.
For readers comparing traditional net metering against export-credit options, the equipment choice is often less important than the tariff terms you accept. Read the interconnection agreement carefully and ask your installer to show you the projected savings under both structures before committing.
FAQ
Can I switch from export-credit compensation back to traditional net metering in Arizona?
In most cases, no. Traditional net metering is generally tied to the interconnection date and the tariff in effect at that time. Contact your utility’s customer service or interconnection department to confirm your eligibility for any rate change.
Does a battery make sense if I already have net metering?
Possibly, but the savings case is weaker because exports already earn a high credit. A battery may still be useful for backup power during outages. Compare the cost and expected savings with a qualified installer before deciding.
What happens to extra solar credits at the end of the year?
Under many net metering arrangements, unused credits are settled in an annual true-up, and utilities may pay out or reset the balance on a set schedule. The exact treatment depends on your utility’s current tariff, so check your account terms.
How long does interconnection usually take?
Timelines vary widely by utility and by how complete your application is. Delays are most often caused by missing documents or inspection scheduling. Submitting a complete package at the start reduces the wait.
Should I hire a professional for my net metering setup?
Yes. Electrical work, interconnection and permitting all carry safety and legal requirements. A licensed electrician or solar installer familiar with your utility’s rules can help you avoid costly errors and confirm that your system is compliant before it is energized.
Conclusion
For Arizona homeowners, net metering is still worth understanding, even as the rules have shifted. If you are already on traditional net metering, keep it and size future changes carefully. If you are a new customer, your best outcome comes from matching the system to your actual usage pattern, and deciding whether a battery fits your household’s schedule. Review your utility’s current tariff, run the numbers with your own bills, and get written projections before you commit.
Related reading
- Why Is My Net Metering Electricity Bill Still High? 6 Causes and Fixes
- What Is the Benefit of Net Metering for Home Solar Owners?
- What Is a Net Metering Bridge Rider? Meaning, Costs and Fixes
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.
