Independent Educational Guide: Virginia residential solar permit facts, sourced, dated, and confidence-scored. Not legal, engineering, or permit advice.

Loudoun County Solar Permit Guide

Dominion Energy Virginia territory · Loudoun County

Loudoun County Solar Permit Checklist
Printed from mygridpermit.com/virginia/loudoun-county/solar-permit-guide/ · Last verified 2026-08-13 · Loudoun County Department of Building and Development, Permitting Division / Dominion Energy Virginia · Verify current requirements before relying on this checklist. Programs and fees change.
✓ Last verified 2026-08-133 official sources
Informational only. This page is not legal, engineering, or permit advice. Every fact below links to the official source it came from and shows how confident we are in it. Verify current requirements with Loudoun County Department of Building and Development, Permitting Division and Dominion Energy Virginia before making a decision.

Overview

GridPermit collects Virginia residential solar and permitting facts directly from official sources (city, county, and state government sites, utilities, and public utilities commissions) and shows only what we can verify, with a confidence score and a link to where it came from. Nothing here is estimated or inferred beyond what's stated below. See our methodology for the rules this page follows.

Battery/solar incentive program on record

No battery/storage incentive program is on record for this locality.

Permit fees

  • Building Permit: $230 (flat fee)

    Per the County's own Solar Permits page.

  • Zoning Permit: $165 (flat fee — ground-mounted systems only)

    Per the County's own Solar Permits page; not required for roof-mounted systems on an existing structure.

  • Electrical Permit: $70 (flat fee)

    Per the County's own Solar Permits page.

Confidence: High (0.9)

Source(s): Solar Permits

Rebates

Not yet verified.

Utility and generation supplier

Utility

Dominion Energy Virginia

Confidence: Medium (0.55)

Source(s): Net Metering

Generation supplier

Dominion Energy Virginia (utility)

No Community Choice Aggregator was found serving Loudoun County's residential solar customers this session; Dominion Energy Virginia is recorded as both the distribution and default generation utility for the portion of the county it serves — see the utility field notes on the genuine Dominion/NOVEC split within the county.

Confidence: Low (0.4)

Source(s): Net Metering

Interconnection

https://www.dominionenergy.com/virginia/renewable-energy-programs/net-metering

Confidence: High (0.85)

Permit authority

Loudoun County Department of Building and Development, Permitting Division

Virginia's Uniform Statewide Building Code (USBC) is administered centrally by the Department of Housing and Community Development (DHCD) and its Board of Housing and Community Development, but enforcement — including permit fees, application processes, staffing, and review timelines — is delegated to each local government's own building department. Loudoun County's own Department of Building and Development is the permitting authority for unincorporated county areas; incorporated towns within the county (e.g., Leesburg, Purcellville) may operate their own separate building departments and would be separate AHJs not covered by this record.

Confidence: High (0.95)

Source(s): Solar Permits, Virginia Uniform Statewide Building Code (USBC)

Permit page: https://www.loudoun.gov/solarpermits

Required documents

  • Construction drawings — three sets of wet-sealed plans showing PV array configuration, wiring system, overcurrent protection, inverter, disconnects, required signage, AC connection to the building, and attachment detail (required when: always)
  • Specification sheets and installation manuals for all components (required when: always)
  • A plat depicting the ground-mounted array's location relative to property boundaries (required when: for ground-mounted systems (required for the zoning permit))
  • Building/Zoning Permit Application and a separate Electrical Permit Application (required when: always)

Confidence: High (0.9)

Source(s): Solar Permits

Inspection steps

  • Inspections are scheduled through LandMARC
  • Inspections occur between 8:30 a.m. and 3:00 p.m., Monday through Friday

Confidence: High (0.85)

Source(s): Solar Permits

Eligibility constraints

  • Property types: residential
  • Max system size (AC): Not yet verified.
  • Max system size (DC): Not yet verified.
  • Max thermal capacity: Not yet verified.
  • Program/pathway: Not yet verified.
  • Other conditions:
    • Homeowners may pull the permit themselves using a 'Statement of Owner/Lessee License Exemption,' or hire a licensed Virginia State Contractor
    • Ground-mounted systems require an additional zoning permit; roof-mounted systems on an existing structure do not

Confidence: High (0.85)

Source(s): Solar Permits

Official contacts

  • Loudoun County Department of Building and Development, phone: 703-777-0220, official website

Confidence: High (0.85)

Need a solar installer who handles permits in Loudoun County?

EnergySage is an independent solar marketplace where you can request property-specific pricing from installers familiar with local permitting.

Compare quotes from solar installers →

You'll continue on EnergySage's website. GridPermit has a partner relationship with EnergySage; this link is not currently tracked, and whether the partnership results in compensation to GridPermit has not yet been confirmed.

Sources

Frequently Asked Questions

What utility serves solar customers in Loudoun County, Virginia?

Dominion Energy Virginia is the interconnection and distribution utility for Loudoun County. The default electricity generation supplier is Dominion Energy Virginia, a utility, separate from Dominion Energy Virginia.

What documents are required for a solar permit in Loudoun County?

Commonly required documents include: Construction drawings — three sets of wet-sealed plans showing PV array configuration, wiring system, overcurrent protection, inverter, disconnects, required signage, AC connection to the building, and attachment detail; Specification sheets and installation manuals for all components; A plat depicting the ground-mounted array's location relative to property boundaries; Building/Zoning Permit Application and a separate Electrical Permit Application.

Who do I contact about solar permits in Loudoun County?

Loudoun County Department of Building and Development, phone 703-777-0220.

Disclaimers: This page is for informational purposes only and is not legal, engineering, financial, tax, or permit advice. GridPermit is not a solar installer, contractor, engineering firm, public utility, or government agency. Requirements, fees, and program terms change. Verify current requirements with Loudoun County Department of Building and Development, Permitting Division and Dominion Energy Virginia before starting a project. Last verified 2026-08-13.

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