Dominion Energy Solar Policies for North Carolina Customers

Dominion Energy serves approximately 560,000 electric customers in northeastern North Carolina, operating under the regulated utility framework established by the North Carolina Utilities Commission (NCUC). This page covers the interconnection requirements, net metering rules, rate structures, and program options that apply specifically to residential and commercial solar customers within Dominion Energy's North Carolina service territory. Understanding these policies is essential before sizing, financing, or installing a photovoltaic system in this service area, as Dominion's rules differ materially from those governing Duke Energy's solar program in North Carolina.

Definition and scope

Dominion Energy North Carolina — the regulated electric utility formerly operating as North Carolina Power — delivers electricity to a service territory covering northeastern counties including portions of Hertford, Northampton, Halifax, and surrounding areas. The NCUC certifies and regulates this entity under North Carolina General Statutes Chapter 62, which governs public utilities including their tariff structures, interconnection obligations, and customer generation programs.

Scope of this page: Coverage applies exclusively to customers whose electric service account is held with Dominion Energy North Carolina. Customers served by Duke Energy Carolinas, Duke Energy Progress, municipal utilities, or electric cooperatives fall outside this scope. Off-grid solar installations without a utility interconnection agreement are also not covered by Dominion's tariff-based policies discussed here, though general conceptual grounding is available at How North Carolina Solar Energy Systems Work.

The full regulatory context — including the Renewable Energy and Energy Efficiency Portfolio Standard (REPS) established under N.C.G.S. § 62-133.8 — is documented at Regulatory Context for North Carolina Solar Energy Systems.

How it works

Solar customers in Dominion Energy's North Carolina territory interact with the utility through three primary mechanisms: interconnection, net metering, and applicable rider tariffs.

1. Interconnection

Before any solar system can operate in parallel with the grid, the customer must submit an interconnection application to Dominion Energy under the NCUC's interconnection rules. The NCUC adopted interconnection standards aligned with the national framework established in IEEE 1547-2018, which governs technical performance requirements for distributed energy resources. The process for obtaining this approval is detailed at North Carolina Utility Interconnection Process.

Key steps in interconnection:

Submit a completed interconnection application with system specifications (inverter make/model, system capacity in kW-AC, one-line diagram).
Dominion reviews the application for technical screen compliance — typically a 15-business-day review window for systems under 10 kW-AC.
If screens pass, Dominion issues a provisional approval pending physical inspection.
A licensed electrical inspector and utility meter technician conduct separate inspections before permission to operate (PTO) is granted.
Dominion installs a bi-directional revenue meter, completing the interconnection.

Systems above 10 kW-AC or those that fail initial screens enter a supplemental review phase, which may extend the timeline and require a distribution impact study at the customer's cost.

2. Net Metering

North Carolina's net metering statute (N.C.G.S. § 62-133.8(b)) requires investor-owned utilities, including Dominion Energy North Carolina, to offer net metering to customer-generators. Under net metering, excess kilowatt-hours exported to the grid are credited at the retail volumetric rate against the customer's bill. Detailed mechanics and current rate structures are covered at Net Metering Policy North Carolina.

Residential systems are capped at 1,000 kW-AC system capacity for net metering eligibility. Non-residential systems may qualify up to 1,000 kW-AC under the same tariff structure.

3. Rate Riders and Tariff Classification

Dominion Energy North Carolina's tariff schedules, filed with and approved by the NCUC, determine the applicable rate class. Residential solar customers typically remain on the standard residential rate with the net metering rider applied. Commercial customers may face demand charges that affect the economics of solar offsets — an analysis relevant to Commercial Solar Systems in North Carolina.

Common scenarios

Scenario A — Small residential rooftop system (≤10 kW-AC): A homeowner in Northampton County installs a 7 kW-AC system. The customer retains eligibility for the Federal Investment Tax Credit (ITC) and may also qualify for the North Carolina solar property tax exemption.

Scenario B — Mid-scale commercial system (10–100 kW-AC): A small business installs a 45 kW-AC rooftop array. This system triggers supplemental technical review. The business remains on a commercial demand-metered rate, meaning the solar offset applies to energy (kWh) charges but may not reduce fixed demand (kW) charges, depending on generation timing relative to peak demand windows. The North Carolina solar return on investment analysis changes materially under demand-charge rate structures.

Scenario C — Battery storage addition: A residential customer adds a 10 kWh battery storage system. Dominion's interconnection rules require disclosure of storage in the application, and the system must comply with UL 9540 safety standards. Details on storage integration are available at Battery Storage Integration North Carolina.

Decision boundaries

The following classification distinctions determine which rules, timelines, and tariffs apply:

Factor	Simplified Track	Supplemental Review
System capacity	≤10 kW-AC	>10 kW-AC
Review timeline	~15 business days	Variable; study required
Cost to applicant	Application fee only	May include study costs
Meter type	Bi-directional revenue meter	Bi-directional revenue meter

Grid-tied vs. non-grid-tied: Dominion's interconnection and net metering policies apply only to grid-tied systems. Off-grid and hybrid configurations without grid interconnection fall outside Dominion's tariff framework. The distinctions are explored at Grid-Tied vs. Off-Grid Solar North Carolina.

Ownership structure: Customers who lease solar equipment through a third-party owner must ensure the system owner, not just the customer, is party to any interconnection agreement. North Carolina Solar Lease vs. Purchase covers the implications of each ownership model within this regulatory framework.

HOA and deed restrictions: Dominion's policies govern the utility-side of a solar installation. Private land use restrictions, including HOA rules, operate independently and are addressed at HOA Solar Installation Rules North Carolina.

For a full picture of programs, incentives, and policy tools available across all North Carolina utilities, the North Carolina Solar Authority home page consolidates statewide solar resources.