Reviewed local solar briefing
Residential solar installation in Arlington
Residential solar in Arlington begins with the county's combined building-and-electrical permit path, followed by a property-specific check of roof access, townhome separation, historic review, service capacity, and the meter account.
A master electrician is on site for every solar project. Typical Northern Virginia rooftop arrays plan in the $19,000–$34,000 cash band at $2.40–$2.85/W. The permit authority, service capacity, mounting conditions, and serving utility are confirmed from the address before the written number.
Content reviewed 2026-08-26
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On every install
Master electrician on site
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Workmanship warranty
Led by a master electrician. Written proposal is project-specific after the local permit and utility path are confirmed.
Address before equipment
The local decision
Use Arlington's solar-permit checklist as the local submission baseline, but do not finalize equipment until roof access, any townhome fire boundary, historic status, panel capacity, and the address-confirmed utility path are documented.
- 01
Arlington County's official solar guidance calls for both a building permit and an electrical permit for residential single-family and townhome solar electric systems.
- 02
Townhome fire-separation conditions, usable roof access, array pathways, and attachment information can constrain the layout before module count is settled.
- 03
Historic-property review is considered where applicable, while panel capacity and grounding are documented for the proposed interconnection.
Project fit
A useful starting point when
- An Arlington detached home whose roof layout and electrical service need to be evaluated together.
- A townhome project that must account for firewall separation and roof-area constraints in the permit package.
- A property where historic review or constrained exterior access needs to be identified before the design is committed.
Local questions
Does Arlington residential solar require both building and electrical permits?
Arlington County's current solar guidance says residential single-family and townhome solar electric systems require both. The final submission package still depends on the property and system design.
What roof issue is specific to an Arlington townhome review?
The county guidance includes a fire-separation condition near a townhome firewall. The actual roof, firewall or parapet condition, array rating, and attachment layout must be documented for the permit review.
Is an Arlington County final inspection the same as utility permission to operate?
No. County permit inspection and the serving utility's interconnection, meter, and permission-to-operate steps are separate approvals.
We handle this for you
Permits and utility in Arlington
We pull the permit and file the utility interconnection for you. These are the offices and programs that apply.
Continue the plan
Connect the local and electrical decisions
Review the regional offer, combined solar-and-battery design, or the existing electrical service-area context for Arlington.
Next step
Start with your bill and your address
Send a recent electric bill and the address. A preliminary system size and price range comes back first, then a site visit with a master electrician turns it into a written proposal.
Solar energy company
AJ Long Electric Solar
AJ Long Electric
7138 Little River Turnpike #305
Annandale, VA 22003
Serving Annandale, Fairfax County, and Northern Virginia.