North Carolina solar calculator
Size a North Carolina home solar system from your electric bill — kW, panel count, roof area, true cost with no federal credit for 2026 installs, and payback.
Quick answer: At $0.150/kWh and 4.7 peak sun hours, a $200/month bill needs about 12.30 kW — 30 × 410 W panels covering ~60 m². Gross cost is ~$30,135 with no federal credit for systems installed after 2025, offsetting $2,400 a year for a ~12.6 year payback.
Your details
Ballpark, not gospel. Ballpark, not gospel. Sized at 78% real-world output with the North Carolina sun-hour average — confirm shading, roof angle and your utility's export tariff with a local installer before buying. The savings math values all generation at your retail rate. Under Duke's Net Metering Bridge Rider, monthly surplus earns only ~3.4–4.5¢/kWh — real savings track how much you self-consume or store in a battery.
The 30% credit ended — what changed
The residential clean energy credit (26 U.S.C. § 25D) gave homeowners a 30% credit on solar installed from 2022 through 2025. The July 2025 tax law ended it: no credit is available for property placed in service after December 31, 2025. That is why every figure on this page is ~30% higher than pre-2026 guides show. If your system went live by the end of 2025, tick the box above to see the credit applied; leased systems may still benefit because the leasing company claims the commercial credit. Source: IRS — Residential Clean Energy Credit.
Typical North Carolina system sizes by monthly bill
| Monthly bill | System size | Panels (410 W) | Net cost (no 2026 federal credit) | Payback |
|---|---|---|---|---|
| $100 | 6.15 kW | 15 | $15,068 | 12.6 years |
| $200 | 12.30 kW | 30 | $30,135 | 12.6 years |
| $300 | 18.45 kW | 45 | $45,202 | 12.6 years |
Computed at $0.150/kWh, 4.7 peak sun hours and $2.45/W installed, with no federal credit for 2026 installs. Modeled on Duke's Net Metering Bridge Rider — exported power earns avoided-cost rates (see below), not the retail rate.
Solar in North Carolina: the details
Solar cost in North Carolina
North Carolina sits mid-pack on price. The EnergySage marketplace averaged about $2.45 per watt installed in 2026, with market quotes typically $2.40–$3.00/W. A $200/month bill needs ~12.3 kW, grossing around $30,100, with no federal credit for 2026 homeowner installs and no Duke rebate (the old lottery rebate program ended; the PowerPair pilot is effectively full).
The state's regulated-market structure means one dominant utility and no provider choice — your export terms are whatever Duke's current tariff says.
Export rules: getting paid for surplus power
Duke Energy's legacy 1:1 net metering is closed to new customers. For 2026 interconnections, the option is the Net Metering Bridge Rider: monthly netting with a ~$22–$28 minimum bill, and any monthly surplus credited at avoided cost — roughly 3.4¢/kWh (Duke Energy Progress) to 4.5¢/kWh (Duke Energy Carolinas), not the retail rate. Bridge enrollment is capped and closes to new customers at the end of 2026.
From 2027, new systems default to Residential Solar Choice: a mandatory time-of-use rate with critical peak pricing, ~3.4¢/kWh midday exports, and a grid access fee on larger systems — a tariff where batteries are near-necessary. Co-ops, municipals and Dominion Energy NC set their own terms.
North Carolina solar incentives
80% property tax exclusion (N.C. Gen. Stat. § 105-275) — file Form AV-10 with your county assessor and 80% of your solar's appraised value stays out of the tax base. North Carolina's old state tax credit is long gone, and Duke's solar rebate program has ended.
The honest picture: NC's incentives are thin, so the economics run on avoided retail purchases — self-consumption first, exports second.
Is solar worth it in North Carolina?
Verdict: workable, but the thinnest math of these five states. The calculator puts a $200/month bill at a ~12.6-year payback with no federal credit and avoided-cost exports. The saving grace is the rate outlook: Duke projects 16–18% further residential rate hikes over the next two years on surging demand — every cent of rate growth shortens your payback. If you install, do it under the 2026 Bridge window and price a battery for the 2027 tariff.
Questions people actually ask
Straight answers, no fluff. Then run your own numbers above.
How many solar panels do I need in North Carolina?
It follows your bill. At the North Carolina average of $0.150/kWh and 4.7 peak sun hours, a $200/month bill needs about a 12.30 kW system — roughly 30 × 410 W panels covering ~60 m² of roof.
What is the average cost of solar panels in North Carolina in 2026?
The EnergySage marketplace averaged about $2.45 per watt installed in 2026, with market quotes typically $2.40–$3.00/W. A $200/month bill needs ~12.3 kW, grossing around $30,100, with no federal credit and no Duke rebate for 2026 installs.
Does Duke Energy still offer net metering in North Carolina?
Legacy 1:1 net metering is closed to new customers. 2026 interconnections use the Net Metering Bridge Rider: monthly netting, a ~$22–$28 minimum bill, and surplus credited at avoided cost (~3.4–4.5¢/kWh). Bridge enrollment closes at the end of 2026; from 2027 new systems default to time-of-use Residential Solar Choice.
What solar incentives does North Carolina offer?
An 80% property tax exclusion for solar (N.C. Gen. Stat. § 105-275 — file Form AV-10 with your county). The state tax credit is gone and Duke's rebate program has ended. Economics run on avoided retail purchases.
Is the 30% federal solar tax credit still available?
Not for homeowner purchases anymore. The residential clean energy credit (26 U.S.C. § 25D) is not available for property placed in service after December 31, 2025, under the July 2025 tax law (Public Law 119-21). Systems installed by the end of 2025 can still claim 30%, and leased systems may still benefit because the leasing company claims the commercial credit instead. (Source: IRS — Residential Clean Energy Credit.)
Is solar worth it in North Carolina?
Workable, but the thinnest math of these states: ~12.6-year payback with no federal credit and avoided-cost exports. The case improves as rates rise — Duke projects 16–18% further residential hikes over two years. Install under the 2026 Bridge window and price a battery for the 2027 tariff.
Figures last checked October 2026. Sources: EIA residential data (2026: ~$0.14–0.16/kWh), NREL PVWatts/NSRDB (~4.5–5.0 peak sun hours), DSIRE, NC Utilities Commission / Duke Energy; IRS — Residential Clean Energy Credit.
More US solar calculators
Compare other states: Texas, Florida, California, Arizona. And the national US solar calculator for country averages.
Comparing quotes? The solar cost calculator breaks down cost per watt and the solar ROI calculator maps your payback year by year. Going deeper: installation cost guide, how net metering works, how much you can save with solar and the solar batteries guide.