Claire WhitakerBy Claire Whitaker

Updated November 2026

Duke net metering changes affect how much your rooftop solar system earns for the electricity it sends back to the grid. This guide explains what shifts in Duke Energy’s export credit rules mean for a typical homeowner, how to check which rules apply to your account, and what to do before your next billing cycle. Your goal is to understand your credit, confirm your rate schedule and decide whether any system changes make sense.

What Changed in Duke Net Metering

Net metering has historically let you send surplus solar power to the grid during the day and draw from it at night, with the utility netting the two. Recent changes in several Duke service territories move away from a simple one-for-one retail credit. Instead, exported energy may be valued at a separate, usually lower, avoided-cost or time-varying rate. The exact rule depends on your state, your interconnection date and the rate schedule on your account.

Shopping for one? See our guide: Duke Energy Florida Net Metering (2026): Which Option Fits Your Home?.

Because the rules differ by state, start by confirming which Duke utility serves your home and which program your system was approved under. Your interconnection agreement and the most recent bill both list the applicable schedule.

Steps to Check How the Changes Affect You

  1. Pull your last 12 months of bills and note your kWh imported (from the grid) and exported (to the grid).
  2. Find your rate schedule name on the bill and compare it with the current Duke tariff for your state.
  3. Confirm your system’s interconnection date. Many grandfathering provisions depend on whether you were approved before a set cutoff.
  4. Calculate your current export credit by dividing the export credit dollars by the kWh exported for one month.
  5. Repeat the calculation after your next bill to see whether the rate has shifted.

Reading the Credit Line on Your Bill

Look for a line labeled as a solar or net metering credit, not just a total. If the per-kWh value looks noticeably lower than your retail energy charge, the export rate has likely been separated from retail pricing. Write the number down so you can track changes month to month.

Options to Consider After the Change

Once you know your export value, you can judge whether your system is sized correctly. A system that exports heavily at a low credit rate may benefit more from shifting use into the middle of the day, when your panels produce the most. Running dishwashers, laundry and water heating during peak solar hours increases the share of power you consume directly, which is worth more than the export credit.

Battery storage is another option to evaluate. A battery can hold midday surplus for use in the evening, which can matter when evening rates are higher. Compare the cost of storage against your projected savings under your specific rate, and treat any projection as an estimate.

For guidance on the rules in your state, review how the programs compare. For example, Duke Energy Net Metering Rate: How Your Solar Credit Is Calculated walks through the credit math, and Duke Energy NC Net Metering vs Net Billing: Which Is Better for Your Home? compares the two structures most homeowners encounter.

Common Mistakes

  • Assuming your existing credit rate stays the same without checking your interconnection date.
  • Judging the change by one bill, which can be distorted by weather or unusual usage.
  • Ignoring export totals, since they drive the credit more than most homeowners expect.
  • Oversizing a system on the assumption that every exported kilowatt-hour will be valued at retail.
  • Skipping a call to Duke to confirm which schedule applies to your account.

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FAQ

Do the duke net metering changes apply to systems already installed?

It depends on your interconnection date and the program you were approved under. Many systems approved before a cutoff keep their original terms, so check your interconnection agreement.

How do I find out my current export credit?

Divide the solar export credit on your bill by the kWh exported that month. Compare the result with your retail energy rate to see how much the export value has changed.

Should I add a battery because of the changes?

A battery can make sense if your export value is low and your evening rates are high, but the decision depends on your usage and upfront commitment. Consult a qualified solar installer or energy advisor before buying.

Conclusion

The duke net metering changes shift how your exported solar power is valued, so the first step is confirming your rate schedule and interconnection date. Track your export credit each month to see the real effect on your bill. Then adjust your habits or system to make more of your solar energy directly.

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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.