North Carolina is a serious solar state — about 5.2 peak sun hours per day in most of the state, and 5th in the US by installed solar capacity. But the customer math has gotten harder. For a Duke Energy residential purchase in 2026, payback runs around 13–19 years, depending on system size, self-consumption, and roof orientation; our model puts it near ~18 years for a typical case.
Two things drive the long payback: the federal credit is gone, and North Carolina has no state income tax credit (the old 35% credit ended in 2015 — yet some installer proposals still list it). On top of that, Duke buys exports cheaply under net billing, not net metering.
The good news: NC has one closing window where the math is materially better, and which utility serves you matters a lot. Read on before assuming any of this applies to your address.
What changed
The federal Residential Clean Energy Credit (§25D) — the 30% homeowner credit — was repealed for systems installed after December 31, 2025. For 2026 NC buyers, the federal credit on solar is $0. The same applies to home batteries purchased outright. The §48E commercial credit (30%) still exists, but only for leased or third-party-owned systems — the lessor claims it, not you. Full federal context here.
VERIFIED 2026-06 · irs.govNet billing in NC: utility and timing decide everything
This is the most important section of the article. Your payback in NC isn't really a number — it's a function of two things: which utility you're on, and when you interconnect.
Duke Energy Solar Choice (the durable default, what we model). Duke serves most of NC — Charlotte, Raleigh, Durham, Greensboro, Winston-Salem. Under Solar Choice:
- Exports are credited at avoided-cost, ~3.4¢/kWh — about 75–80% below retail.
- It's a required time-of-use (TOU) plan.
- This is the post-2026 default for new Duke residential solar customers.
Duke Net Metering Bridge Rate (closing Dec 31, 2026). A much better rate exists, but with a hard deadline:
- Near-retail monthly credits, locked for 15 years once you interconnect.
- Available to new customers only, and only if you interconnect on or before December 31, 2026.
- After that date, new Duke residential solar customers get Solar Choice — period.
This isn't a sales urgency story. It's a regulatory calendar fact. If your project can realistically complete interconnection before the deadline, your terms will be materially better than what this calculator models. If it can't, plan around Solar Choice.
Dominion Energy (small share, northeastern NC). Dominion customers get true 1:1 retail net metering at about ~14¢/kWh — the best case in the state, but the customer base is small. Our calculator does not model Dominion.
EMC cooperatives. Cooperatives across rural NC use their own net billing, typically around ~3–4¢/kWh — similar to Duke Solar Choice, but specifics vary by cooperative. If you're on an EMC, call your cooperative.
NC retail electricity is currently about ~14¢/kWh and has risen ~24% since 2021.
VERIFIED 2026-06 · eia.govWhat NC doesn't have
No state income tax credit. North Carolina's residential solar income tax credit (the well-known 35% credit) expired at the end of 2015. Nothing replaced it. This is one of the most common quote errors we see — proposals occasionally list a "state solar credit" that does not exist. If you see one, ask for the statute citation. There won't be one.
By contrast, neighboring South Carolina does have a strong residential credit (25% of cost, up to $3,500/year, 10-year carryforward). The NC and SC outcomes look different mostly because of that difference.
Sales tax: status disputed. Most sources say NC does not offer a residential solar sales tax exemption. One source cites §105-164.13(57a) as an exemption. We don't take a position. Check with the NC Department of Revenue if a quote relies on a sales-tax exemption.
Property tax: exempt — but watch July 1, 2026
NC currently offers a 100% property tax exemption for residential solar under N.C. Gen. Stat. §105-275(45) — automatic, no application. So the added home value from your system does not raise your property tax bill today.
Caveat: 2025 legislative proposals could change residential solar property tax abatement rules starting July 1, 2026. Whether anything passes and what the final language looks like is unsettled. If you're closing on a system around or after that date, verify the current law before relying on this.
VERIFIED 2026-06 · N.C. Gen. Stat. §105-275(45)Battery in North Carolina
A home battery makes sense when the retail-export gap is large — you store solar that would have exported cheaply and use it instead of buying retail later. In NC under Duke Solar Choice the gap is ~10.6¢ (14¢ retail vs. ~3.4¢ avoided-cost). That's an intermediate case:
- Bigger gap than Arizona or Georgia (~5–6¢) — battery economics are noticeably more favorable than those states.
- Smaller gap than California NEM 3.0 (~26¢) — not the clear win California is.
There's no federal credit on the battery purchase in 2026 (§25D repealed), and NC has no general state battery rebate. Duke PowerPair is the relevant program: up to $9,000 (~$3,600 solar + ~$5,400 battery) for qualifying solar+battery customers. PowerPair is Duke-specific, has limited availability, and is not modeled in this calculator by default. Verify directly with Duke whether you're eligible — if you are, your math improves.
The honest picture
North Carolina solar in 2026:
- Federal credit: $0 — not 30%.
- State income tax credit: none (the old 35% ended 2015 — be wary of quotes that list one).
- Net billing export rate (Duke Solar Choice): ~3.4¢/kWh — durable default.
- Bridge Rate (near-retail, 15-yr lock): new Duke customers only through Dec 31, 2026.
- Dominion northeastern NC: true 1:1 retail (~14¢) — small share, best case, not modeled.
- EMC cooperatives: ~3–4¢ net billing — call your cooperative.
- Retail rate: ~14¢/kWh, up ~24% since 2021.
- Property tax: 100% exempt today; 2025 proposals could change July 1, 2026 — verify current law.
- Sales tax: status disputed — don't model an exemption.
- Battery: intermediate case (~10.6¢ gap). Duke PowerPair (up to $9,000) is Duke-specific and not assumed here — verify separately.
- Typical Duke Solar Choice payback: ~18 years in our model; 13–19 years range depending on case.
The case for NC solar is real, but the headline number depends on two switches you can't control by trying harder: your utility, and whether you can complete interconnection before the Bridge Rate deadline. If you're on Dominion, the math is the best in the state. If you can make Bridge before December 31, 2026, you lock in materially better terms for 15 years. If you can't — Solar Choice and a long payback are the honest baseline.
Before you commit:
- Confirm whether you're on Duke, Dominion, or an EMC — the export rate changes by a factor of ~4.
- If you're aiming for Bridge Rate, make sure your installer's project timeline can realistically complete interconnection by Dec 31, 2026 — not just sign a contract.
- Don't model a state income tax credit. NC doesn't have one.
- Don't assume a sales tax exemption. Verify with NC DOR.
- Verify the property tax law as it stands when your system installs — 2025 proposals could change residential abatement July 1, 2026.
- Ask Duke directly about PowerPair eligibility before assuming the rebate.
- Run the calculator with your actual ZIP and system size.
Estimates only — your terms depend on your utility (Duke / Dominion / EMC) and timing (Bridge Rate deadline). Verify with your utility and a licensed installer. This is not financial advice.