Electrician-led solar company in Herndon

Solar Panel Installation in Herndon, VA

Herndon is one of the few Fairfax County towns with its own building department, so a solar permit inside town limits comes from the Town of Herndon, not the county. Franklin Farm and the other planned communities on the Herndon and Oakton line add an HOA review that we prepare. AJ Long Electric installs the array, the panel, the battery, and the EV charger as one job, with a master electrician on site.

A master electrician is on site for every solar project. $2.40–$2.85/W installed, cash. We file with the Town of Herndon or Fairfax County, whichever your parcel is in, prepare the HOA package, and file the Dominion interconnection.

Get a free solar quote

Content reviewed 2026-09-05

Colonial-style brick home with dark rooftop solar panels and closed exterior electrical equipment, Herndon, Virginia

Google reviews

1,463 across four profiles

Family-owned

Since 1996

Licensed and insured

VA 2705031092

On every install

Master electrician on site

Before work

Written scope and price

Cost

What solar costs in Herndon

A typical 8 to 12 kW rooftop system installs for $19,000–$34,000 cash, which is $2.40–$2.85/W. These are cash installed prices for modules, racking, inverter, and interconnection labor. The proposal identifies the equipment and installation scope handled by AJ Long Electric.

Herndon's 1980s and 1990s colonials have simple gable roofs and panels with room for a backfed breaker, so most Herndon arrays are priced inside the published band with no panel work. Inside the town limits the town permit fee is its own line. When a Herndon home still runs a 100A service, the heavy-up is on the same proposal at $3,500–$7,500.

Installed prices by system size
System size	Typical annual production	Installed price, cash
8 kW	About 10,000 kWh	$19,200–$22,800
10 kW	About 12,500 kWh	$24,000–$28,500
12 kW	About 15,000 kWh	$28,800–$34,200

Production assumes about 1,250 kWh per kW per year for a typical Northern Virginia roof. Your bill and your roof set the real number.

Incentives

Herndon solar incentives in 2026

The federal residential credit does not apply to systems installed after December 31, 2025. What is left for a Herndon address is built into the proposal, and the full list with sources is in our Fairfax County incentives guide.

Fairfax County waives the residential solar permit fee for a Herndon address and exempts the equipment from property tax for five years after the inspection passes.
Fairfax County: Going Solar Fairfax County: Solar Equipment Property Tax Exemption
Net metering credits every kilowatt-hour a Herndon array sends back at the retail rate, and the SRECs stay yours under the State Corporation Commission order of April 30, 2026.
Dominion Energy Virginia: Net Metering Virginia SCC: Dominion net metering case PUR-2025-00079 (NEM 2.0)
Inside the Town of Herndon the town issues the permit under its own fee schedule, so the county permit fee waiver applies to Herndon addresses in the county, not inside the town. The five-year property tax exemption applies to both.
Town of Herndon: How to Apply for a Building Permit Fairfax County: Solar Equipment Property Tax Exemption

Read the 2026 Fairfax County solar incentives guide

Why an electrician

Why Herndon homeowners choose an electrician for solar

For a Herndon property, the proposal needs to identify the electrical work and the required approval steps. Confirm the property jurisdiction, association requirements, and utility before setting an installation schedule.

The Town of Herndon inspects its own permits, and the inspector looks at the same things the county does: the backfed breaker, the disconnect, the labeling, and the grounding. That is the work we have done in Herndon for thirty years.

The price is a cash installed number. The HOA package, the permit fee, and any EV charger or battery are itemized on one proposal.

Solar makes sense in Herndon when

Your home is inside the Town of Herndon and you want the town building permit and inspection handled by a contractor who has filed there before.
Your Franklin Farm or Fox Mill colonial is under HOA architectural review and you want the package prepared and submitted for you.
Your 1980s panel has room for the backfed breaker and the array is the only electrical work, so you want a clean cash price for the roof alone.

Herndon neighborhoods we serve

Inside the town and across the Herndon mailing area in the county.

Downtown HerndonFranklin FarmFox MillKingstreamReston Oakton Sterling Chantilly

Google reviews

What Herndon homeowners say

Google reviews from panel, heavy-up, and EV charger jobs in Herndon and the western county. Solar reviews land here as installs finish.

Evan was the best! He was fast and installed my EV charger exactly where I wanted it. He also came out to do an estimate and told me exactly what he would do and how long it would take him. He was professional and nice!

Mari P, Google review

We had a great experience being able to get power restored to our house with a breaker box replacement. Visit was scheduled within a couple days and diagnostic was free. I got a reasonable quote that was right around what a couple other companies priced, but half of another competitor who did the initial assessment. Very professional electrician that got everything done in a day, and appreciated that he also helped put dry wall back up for me to spackle/paint. Felt like my options were honestly laid out and had a good discussion around the contract before repairs began. Owner felt trustworthy

Bryon Elwell Jr, Google review

For us, AJ Electric has forgotten more about electrical work then any other electrical service providers have ever known. We have used AJ Long Electric for all kinds of work at our home and they were excellent in every respect. We had them update many lights, remove old florescent lights, install outdoor security lights, change old switches to add dimmers, and help us clarify some old labels in our fuse box. The best thing about AJ Electric is THEY ARE VERY RESPONSIVE! They respond quickly to our inquiries, they email and text frequently with updates, we see an estimate for every job days before they arrive, and they text when they're on their way. Responsiveness is the most important aspect of a any business relationship and with AJ Electric it's their modus operandii. After AJ Electric arrives, their work is professional and of high quality. Their electrians work efficiently and are very mindful of being a guest in a customer's home. We have also appreciated how the AJ Electric staff, despite us having agreed to an estimate, will still consult with us before finalizing any work just in case we want any changes. Often, we have a discussion about any other options or ideas before we proceed. That degree of consideration on any home projects is great appreciated.

Jay McAninch, Google review

Herndon solar questions

Who issues a solar permit in Herndon, the town or the county?

It depends on the parcel. Inside the Town of Herndon limits, the town's Building Inspections division issues the building and electrical permits and sends its own inspector. A Herndon mailing address outside the town, including most of Franklin Farm and Fox Mill, is Fairfax County, where Land Development Services issues the permit and waives the fee. We confirm the jurisdiction from the parcel record before we file.

Town of Herndon: How to Apply for a Building Permit Fairfax County: Residential Solar Permits

Does the Fairfax County permit fee waiver apply inside the Town of Herndon?

No. The waiver is a Fairfax County program for county-issued permits. Inside the town, the Town of Herndon's fee schedule applies, and we show it as its own line on the proposal so there is no surprise. The county property tax exemption still applies to a Herndon parcel because the town is inside the county.

Town of Herndon: How to Apply for a Building Permit Fairfax County: Going Solar Fairfax County: Solar Equipment Property Tax Exemption

Will the Franklin Farm HOA approve solar on my roof?

Virginia Code 55.1-1820.1 stops an association from banning rooftop solar unless the recorded declaration does, and it limits restrictions that raise the cost more than 5 percent or cut production more than 10 percent. Franklin Farm reviews exterior changes, and we prepare the package with the roof layout, the all-black module option, and the attachment detail so the review goes through on the first pass.

Franklin Farm Foundation Virginia Code 55.1-1820.1: Installation of solar energy collection devices

Who is the utility for a Herndon address?

Dominion Energy Virginia serves Herndon and the surrounding county. We file the interconnection with Dominion after the town or county permit is issued and request permission to operate when the inspection passes.

Dominion Energy Virginia: Net Metering

We handle this for you

The town, the county, the HOA, and Dominion in Herndon

Herndon has two jurisdictions with the same mailing address, and one of them is a town with its own building department. Here is how a Herndon solar permit works.

01
Inside the Town of Herndon, Building Inspections issues the building and trade permits, including the electrical permit for a rooftop array, and sends its own inspector. A Herndon mailing address outside town limits is Fairfax County. We confirm from the parcel.
Town of Herndon: How to Apply for a Building Permit Fairfax County: Residential Solar Permits
02
Franklin Farm and the other 1980s planned communities between Herndon and Oakton run architectural review for exterior changes. Virginia Code 55.1-1820.1 keeps that review reasonable, and we prepare the HOA package with the layout and module color.
Franklin Farm Foundation Virginia Code 55.1-1820.1: Installation of solar energy collection devices
03
Herndon addresses are Dominion Energy Virginia. The 1980s and 1990s colonials in Franklin Farm and Fox Mill are usually on 150A or 200A service with a panel that has busbar room for the backfed breaker.
Dominion Energy Virginia: Net Metering Fairfax County: Residential Solar Permits

We handle this for you

The offices and programs

Click through for the official pages. We do the filing, the scheduling, and the follow-up.

Permit office

Utility interconnection

Dominion Energy Virginia: Net MeteringApplies when your bill shows Dominion Energy Virginia as the serving utility.We file the interconnection and request permission to operate after the inspection passes. Dominion credits exported power one for one under the SCC order of April 30, 2026.Source reviewed 2026-08-26

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 Herndon.

Next step

Start with your bill and your address

Send a recent electric bill and the address. We review your usage, roof information, and electrical needs, then confirm the assessment needed for a written proposal. Estimates are free.

Get a free solar quote