North Carolina ranks fifth in the country for installed solar capacity, with more than 10,093 megawatts on the ground, according to Solar Energy Industries Association data for North Carolina. On many utility-scale projects, the perimeter fence gets scoped late and becomes one of the first permitting issues to create delays. A setback conflict can force a site-plan revision, while a missing code reference can send the package back for review.
This guide covers North Carolina code requirements, chain link versus high-tensile woven wire, county setback rules, and what to look for in a solar farm fence contractor.
What North Carolina’s Electrical Code Actually Requires
Two sets of rules govern most utility-scale solar fencing decisions: the National Electrical Code (NEC), adopted statewide as North Carolina’s electrical code, and the state building code, which governs footings and structural work.
Under NEC Article 110.31, any fence enclosing equipment above 1,000 volts must be at least 7 feet tall, or 6 feet of fence fabric plus 1 foot of barbed wire. The same section, referenced by Article 691 for large-scale photovoltaic supply stations, establishes minimum clearances between the fence and energized equipment:
- 10 feet for 601 to 13,799 volts
- 15 feet up to 230,000 volts
- 18 feet above 230,000 volts
North Carolina is currently enforcing the 2020 electrical code and the 2018 building code. The 2024 building code has been adopted, but its effective date remains unset, so footing and foundation work must still comply with the 2018 code. Confirm the current status with the county inspections office.
The most overlooked issue is grounding. Under National Electrical Safety Code Rule 092E, metallic perimeter fences at electric supply stations must be bonded and grounded at specified intervals to reduce step-and-touch potential during a fault.
Chain Link vs. High-Tensile Woven Wire
Both materials are common on North Carolina utility-scale sites.
Chain link is inspector-friendly. Chain link fence installation is easy to source, familiar to inspectors, and straightforward to specify with a barbed-wire top where required. It bonds cleanly to the grounding system and generally creates fewer questions during electrical review.
High-tensile woven wire costs less on large sites. This fencing, typically a fixed-knot design with a Class 3 galvanized coating, is common on larger rural sites. With post spacing around 20 feet, the installed cost per linear foot is often lower, and the system is designed for long service life.
For a 50-acre site near a subdivision, chain link is often the cleaner fit. For a 200-acre rural parcel, fixed-knot woven wire is frequently the more economical choice.
County Setback Rules Can Reshape Your Buildable Acreage
This is where many developers get surprised. Some counties have dedicated solar ordinances with specific fence setbacks, while others apply the base zoning district’s accessory-structure setbacks.
| County | Fence / setback requirement | Source |
|---|---|---|
| Beaufort | Security fence set back at least 100 ft from all property lines and rights-of-way; solar equipment kept at least 25 ft inside the fence line; fence minimum 6 ft, chain link | Code of Ordinances, Ch. 155, § 155.05 |
| Warren | Security fencing set back 50 ft from all property lines; fence minimum 6 ft; vegetative buffer required | Code of Ordinances, § 157.068 |
| Wayne | Improved area set back 200 ft from a public road (reducible to 100 ft with an opaque fence) and 25 ft from the fence line | Code of Ordinances, Ch. 18, Art. VII, § 18-195(c) |
| Alleghany | 2,000 ft from dwelling units and other protected uses | NC State Clean Energy Technology Center survey |
| Brunswick | 500 ft from scenic byways | NC State Clean Energy Technology Center survey |
| Chowan | 1,000 ft from scenic byways or historic sites | NC State Clean Energy Technology Center survey |
On a 100-acre site, Beaufort County’s setback requirement alone can remove 8 to 10 acres from the buildable envelope. Wayne County’s ordinance can reduce the required road setback by half if an opaque fence is installed.
Most counties that specify a fence height require 6 feet, per NC State University’s ordinance survey. For North Carolina counties without a dedicated solar ordinance, confirm setbacks with the planning department in writing. Also, remember to call NC 811 at least three full working days before anyone excavates, as required by state law.
Wildlife-Friendly Fencing Without Giving up Security
Wildlife-friendly design is appearing more frequently in North Carolina solar approvals.
The Nature Conservancy conducted multi-year camera-trap studies at solar sites in Johnston County and Moore County and found that a permeable gap at the bottom of the fence allowed wildlife movement without materially reducing perimeter security. The organization’s published design brief specifies vertical wire spacing of at least 7 inches at the bottom of the fence, rather than driving the bottom wire flush to the ground.
That can be achieved with wider bottom-wire spacing on fixed-knot fencing or by holding chain-link fabric slightly above grade. The 7-foot NEC minimum height is measured to the top of the fence, so a permeable bottom remains compatible with code.
What to Look for in a Solar Farm Fence Contractor
A solar farm fence is not simply a larger residential fence. It surrounds live medium-voltage equipment and must coordinate with grounding plans, setback requirements, wildlife considerations, and access-control systems.
Gate and access control work in-house.
Every solar site needs at least one automated gate, usually a slide gate with card reader or keypad access for crews. Hurricane Fence runs its own gate operator and access control division rather than subcontracting that work out, with a team holding IDEA Certified Automated Gate Systems Designer, CAGOI, and CGAD credentials.
Look for design-build capability, not just installation.
Look for a contractor that can review the site plan and electrical single-line drawing and return a specification package suitable for permitting and procurement.
Regional experience counts with local planning departments.
Hurricane’s Raleigh and Dunn office covers commercial fencing across the Research Triangle and reaches roughly halfway to Charlotte.
Bring the fence contractor into the site plan conversation early.
Hurricane Fence has handled commercial and high-security perimeter fencing across Virginia, North Carolina, and the DC metro area since 1994, including solar and other large-scale energy projects. Call the Raleigh/Dunn office at (919) 879-2271 or request a free estimate, and someone will follow up within 24 hours. Developers in the DC metro area can reach Hurricane’s Northern Virginia office at (571) 369-3006.
Frequently Asked Questions
How tall does a solar farm fence need to be under the National Electrical Code?
Under NEC Article 110.31, a fence enclosing equipment above 1,000 volts must be 7 feet tall or 6 feet plus 1 foot of barbed wire.
Does North Carolina require a specific setback for solar farm perimeter fencing?
It depends on the county. Beaufort County and Warren County have dedicated solar setback requirements, while other counties rely on base zoning setbacks.
Is wildlife-friendly fencing required for solar farms in North Carolina?
Not statewide, but it is increasingly requested during rezoning and conditional-use approvals. The Nature Conservancy’s North Carolina design brief recommends at least 7 inches of vertical wire spacing at the bottom of the fence.
Should a solar farm in North Carolina use chain link or high-tensile woven wire?
Both meet code. Chain link is often preferred near roads and subdivisions, while high-tensile woven wire is frequently the lower-cost option on large rural sites.
Who handles grounding and bonding for a solar farm’s perimeter fence?
The fence contractor installs the fence in accordance with the grounding plan prepared by the project’s electrical engineer, bonding it per NESC Rule 092E.
How far ahead do we need to call NC 811 before fence post installation begins?
At least three full working days before excavation. Late utility locates are among the most common avoidable causes of fence installation delays.
