State pages

Solar in North Carolina

Utility-scale sun built this state's ranking; rooftop economics live on retail rates and your utility's export terms. Size to daytime use first, and treat any surplus as a bonus until the tariff proves otherwise.

Production and price context

• Production: Roughly 1,200 to 1,400 kWh per kW per year across the Piedmont and coastal plain, lower in the mountains. These are planning factors based on NREL PVWatts-style yields, not a roof-specific model.
• Electricity prices: Residential prices sit a little below the national middle, so production and export terms have to do the work.
• Average residential price: 15.05 cents per kWh in North Carolina (average price by state, 2025). Source: U.S. Energy Information Administration, Electric Power Monthly (average price by state) (source year 2025, verified 2026-10-04). For wider utility and rate context beyond rooftop decisions, see EnergyBS.

What that production range means on a roof

Put North Carolina's range on the standard 8 kW example. At 1,200 to 1,400 kWh per kW per year, the middle band of the 13 states on this site, an 8 kW system produces roughly 9,600 to 11,200 kWh in its first year. The hardware price does not change at the state line: at the NREL benchmark of $3.25 per watt, that system is $26,000 before incentives in every state. What changes is the value of a kilowatt-hour. At North Carolina's average residential price, the year-one range is worth about $1,445 to $1,686 if every kilowatt-hour offsets a retail purchase, a simple payback of about 15.4 to 18.0 years with no federal credit and no incentive subtracted. At 15.05 cents, electricity is cheap enough in North Carolina that price will not rescue a weak roof. Production per installed watt and the export rule decide the outcome here, so shade, orientation, and how much of your own load the system can meet deserve more scrutiny than the discount on the quote.

North Carolina rooftop terms are set by utility and program vintage, and the old state renewable tax credit expired years ago. So read every North Carolina quote export-first. A kilowatt-hour you send out is worth less than one you use, and the production range above only pays in full on the share you consume yourself. Ask the installer what export value sits inside their payback, in writing, and check it against your tariff before you compare prices.

Hold installer promises against that 1,200 to 1,400 kWh per kW range. A promise above the top of it for any North Carolina roof needs a named production tool, stated tilt and azimuth, and a shade analysis you can reproduce. A promise near the bottom on a clean south-facing roof deserves the same questions in reverse. The state range frames the conversation; the roof-specific model, with your tariff's export value inside it, settles it.

Simple payback on the standard 8 kW example, with every assumption printed

• System size: 8 kW DC.
• Gross cost: 8,000 watts at the NREL residential benchmark of about $3.25 per watt DC (2024, checked October 4, 2026) is $26,000 before any incentive. That benchmark is a comparison line for judging quotes, not a quote, a local price survey, or a price cap.
• First-year production: 9,600 to 11,200 kWh, from the North Carolina planning range of 1,200 to 1,400 kWh per kW above. Planning factors only, until a roof-specific PVWatts model exists for your address.
• Value of production: every kilowatt-hour is valued at the EIA state average residential price of 15.05 cents per kWh (2025), giving a first-year value of about $1,445 to $1,686. Valuing every kilowatt-hour at the full average price overstates savings in North Carolina wherever exported energy is paid below the retail rate, and wherever fixed customer charges or minimum bills apply. Your real first-year savings will be lower than this range to the extent that you export power instead of using it yourself.
• Federal credit: none subtracted. The federal residential solar tax credit ended for systems placed in service after 2025, so this example assumes no federal credit.
• State and utility incentives: no incentive value is subtracted. Any program listed for your address in DSIRE would shorten the payback if you qualify; confirm its current value in DSIRE and your utility tariff rather than trusting a value printed in a quote.
• Not modelled: panel degradation, electricity price escalation, financing costs, maintenance, roof work, and time-of-use price differences are not modelled.
• Simple payback: $26,000 divided by the first-year value range above gives a simple payback of about 15.4 to 18.0 years. Simple payback means exactly that division; it is not a return forecast.

Run your own numbers with your actual bill and quote in the estimator, check how exports are priced in our net metering guide, and read the sizing guide before deciding how much of that 8 kW example your roof should actually carry.

Incentives and export rules to verify

North Carolina rooftop terms are set by utility and program vintage, and the old state renewable tax credit expired years ago. Confirm the current net metering or net billing terms for your address in DSIRE and your utility tariff.

DSIRE's North Carolina listing describes the portfolio standard first adopted in 2007 (12.5% for investor-owned utilities, 10% for municipal utilities and cooperatives, now carried forward as the Clean Energy and Energy Efficiency Portfolio Standard), and House Bill 589 (2017), which added competitive procurement for solar developers, a statewide solar rooftop leasing program, a community solar program, and the Green Source Rider. Rooftop export terms are set by your utility; the largest are Duke Energy Carolinas, Duke Energy Progress, and Dominion Energy North Carolina, alongside many cooperatives and municipal utilities. Confirm the current net metering or net billing terms for your address in DSIRE and the utility tariff.

Policy summary source: DSIRE (Database of State Incentives for Renewables & Efficiency), dsireusa.org, accessed 2026-10-04. Program values are never printed here as guaranteed; name the program, then confirm its current value in DSIRE and your utility tariff.

Two sources decide what applies to your address today: DSIRE, the national database of state incentives for renewables and efficiency, for programs; and your utility's current tariff or residential solar page, for export compensation, fixed charges, and rollover rules. Program names and values change through legislation and rate cases, which is why this page tells you where to verify instead of printing a program value that could be stale on arrival.

The order of decisions in North Carolina

1. Confirm the export rule and any minimum bill. That prices your surplus energy.
2. Size the system against a year of bills and the export rule, using our sizing guide.
3. Price at least three quotes against the $3.25 per watt NREL benchmark line in the estimator.
4. Only then evaluate batteries, which pay through export value and rate spreads, per our battery guide.

What matters most here

Utility-scale sun built this state's ranking; rooftop economics live on retail rates and your utility's export terms. Size to daytime use first, and treat any surplus as a bonus until the tariff proves otherwise. Start from that fact when you read quotes. Ask every installer to show the production tool behind their estimate, the export value inside their payback, and the incentive owner for every dollar subtracted from the price. If the answers name documents you can check in DSIRE or your tariff, you are having the right conversation. If they name deadlines and pressure instead, our quote red flags guide lists what to ask next.

Worked examples in North Carolina

This site works the full benchmark example, end to end, for Raleigh. Each metro page states its production factor, example electricity price, first-year savings, and simple payback on the same 8 kW, $180-bill example used across the site, so the metro figures and this state context can be read together.