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Solar energy company

The Electrician-Led Solar Company for Northern Virginia

A full-service solar company: roof study, design, permits, installation, utility interconnection, and service after. Solar and the electrical work are planned together by AJ Long Electric. Panel, heavy-up, battery, EV charger, and array planned together by a licensed electrical contractor.

$2.40–$2.85/W installed, cash. Rooftop installation and electrical work by AJ Long Electric, with a master electrician on site for every install.

Content reviewed 2026-09-01

Colonial-style brick home with dark rooftop solar panels and closed exterior electrical equipment
Solar planning illustration

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

Answer first

The direct answer

AJ Long Electric is a solar company serving Annandale, Fairfax County, and Northern Virginia, handling rooftop installation and electrical work. A master electrician is on site for every solar project, and the panel, heavy-up, battery, and EV charger are designed with the array under one license. A typical 8 to 12 kW rooftop system installs for $19,000–$34,000 cash, which is $2.40–$2.85/W.

  • AJ Long Electric handles the panel, the heavy-up, the battery, the EV charger, and the array.
  • A typical 8 to 12 kW rooftop system installs for $19,000–$34,000 cash. Panel, battery, and roof work are itemized separately.
  • We pull the county permit, file the Dominion or NOVEC interconnection, and close out the inspection.
  • A standard grid-tied array shuts off in an outage. Add a battery and transfer equipment and the circuits you choose stay on.

Cost

What solar costs in Northern Virginia

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.

A panel upgrade, when the house needs one, is itemized separately at the published $3,500–$7,500 range. Batteries, EV chargers, and roof work are itemized too, so the number you compare is the number you pay for the array.

Typical 8–12 kW rooftop solar array

Cash planning range at $2.40–$2.85/W for modules, racking, inverter, and interconnection. Unusual roofs, panel upgrades, batteries, and EV circuits are extra. The written proposal is project-specific.

$19,000–$34,000

Installed prices by system size
System sizeTypical annual productionInstalled price, cash
8 kWAbout 10,000 kWh$19,200–$22,800
10 kWAbout 12,500 kWh$24,000–$28,500
12 kWAbout 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.

Solar, connected to your life

One home. Three energy moments.

See how the roof, electrical panel, battery, and utility work together. Select a moment to follow the power.

Your roof powers your day.Solar → home · Surplus → battery or grid. Conceptual house energy diagram with optional battery storage.Rooftop solarYour homePanelBatteryOptionalUtility grid
Illustration only. Equipment, flow, and backup capability depend on the final system design.

Solar → home · Surplus → battery or grid

Your roof powers your day.

Solar generation can serve household loads first. Available surplus can charge compatible storage or flow to the grid under your utility agreement. When production falls short, the grid supplies the difference.

Explore solar installation

Why an electrician

Why hire an electrician for solar

Solar and the electrical work are planned together by AJ Long Electric. Here is what that changes.

  1. 01 / panel

    We already do the panel and heavy-up

    Many Northern Virginia homes on 100A or 150A service need a heavy-up before solar. That is our core trade, and it is priced in the same proposal at the published $3,500–$7,500 range, not as a change order.

  2. 02 / loads

    We design the EV and battery loads with the array

    The charger, the battery, and the array share one panel and one load calculation. We size all of it together so nothing is an afterthought.

  3. 03 / crew

    A master electrician is on site for every install

    Led by a master electrician. The person responsible for the electrical is on your roof and in your panel.

  4. 04 / county

    30 years of Fairfax County inspections

    AJ Long Electric has pulled permits and closed inspections in Fairfax County since 1996. We know the forms, the inspectors, and the Dominion and NOVEC interconnection steps.

Equipment

Equipment we design around

Listed equipment with manufacturer warranties and local support. The final platform is set in your written proposal.

Inverters
Listed microinverters or string inverters selected for the roof and system design.
Modules
Listed modules selected for roof area, shade, output, and manufacturer warranty terms.
Batteries
Compatible listed storage and transfer equipment, with the model specified in your proposal.
Smart panels
SPAN Panel and Leviton Load Center.

System sequence

One electrical design

  1. 01Array
    Modules and racking sized to your roof and your bill.
  2. 02Inverter
    Microinverters or a string inverter, with rapid shutdown built in.
  3. 03Panel
    Capacity and backfeed checked, upgraded when the house needs it.Review
  4. 04Smart loads
    Optional load management on the same panel.Review
  5. 05Battery
    Optional backup for the circuits you choose.Review
  6. 06EV circuit
    Optional charger load included in the calculation.Review

Incentives

2026 solar incentives in Northern Virginia

The federal residential credit is gone. The local incentives are still worth real money, and we build them into the proposal.

  • The federal residential credit, Section 25D, does not apply to systems installed after December 31, 2025. Our pricing does not assume it.
  • Dominion one-to-one net metering and customer-owned SRECs were preserved by the State Corporation Commission's final order on April 30, 2026. New net metering customers pay a $1 per month administrative fee.
  • Fairfax County waives the residential solar permit fee and exempts solar equipment from property tax for five years. The City of Fairfax exempts it for ten.
  • Virginia Code 58.1-3661 is the state law behind the local property tax exemptions and covers residential systems up to 25 kW.
Read the 2026 Fairfax County solar incentives guide

How it works

From your bill to permission to operate

Six steps. We handle the permit, the utility, and the inspection.

  1. 01

    Free quote from your bill and address

    Send your address and recent electric usage. We review the roof and electrical conditions before sizing the array.

  2. 02

    Site and electrical review

    A master electrician checks the roof, the service size, the panel, and the interconnection point.

  3. 03

    Written proposal

    Equipment, price, and scope in writing, with any panel, battery, or EV work itemized.

  4. 04

    Permit and interconnection

    We pull the permit and file the Dominion or NOVEC interconnection for you.

  5. 05

    Installation

    Our crew installs the array and the electrical. A master electrician is on site for every solar project.

  6. 06

    Inspection and permission to operate

    We schedule the inspection and close out the utility so you can turn the system on.

Google reviews

What Northern Virginia homeowners say

Three of our 1,463 Google reviews, from panel, heavy-up, and EV charger jobs.

5 out of 5 stars
AJ Long electric was great from start to finish. The owner who came and quoted my panel upgrade, EV charger install, and grounding install was very thorough and answered any and every question I had. Their quote was reasonably priced, and I felt comfortable.
Michael Prevatt, Google review
5 out of 5 stars
Upgraded my fuse box and installed an EV charger wtih an additional 110 outlet. Solid estimate, timely response, excellent work. Very efficient and knowledgeable, making useful recommendations without trying to "upsell". I definitely recommend and will use them again.
Don Sz, Google review
5 out of 5 stars
They were upfront a honest with me during the troubleshooting & estimate process. When they did the actual "heavy up" and bringing our house up to code, their work was great. Professional service, I highly recommend them. We already have other projects we will be hiring them for.
Josh Davidson, Google review

Straight answers

Frequently asked questions

Does AJ Long Electric install solar panels?

Yes. AJ Long Electric designs and installs residential solar in Northern Virginia: the array, the inverter, the interconnection, and any panel, battery, or EV charger work in the same job. A master electrician is on site for every solar project.

How much does solar cost in Fairfax County?

A typical 8 to 12 kW rooftop system installs for $19,000–$34,000 cash, which is $2.40–$2.85/W. That price covers modules, racking, inverter, and interconnection labor. Fairfax County waives the residential solar permit fee, so there is no permit fee line on the proposal. A panel upgrade, when the house needs one, is itemized at the published $3,500–$7,500 range.

Is the solar quote free?

Yes. The bill review, the site visit, and the written proposal are free. There is no fee for the visit or the written price.

Do I need a panel upgrade for solar?

Many Northern Virginia homes on 100A or 150A service do, and some 200A panels need a main breaker or busbar change to accept the backfeed. We run the load calculation and the 120 percent busbar check during the site review. If the panel needs work, it is priced in the same proposal at the published $3,500–$7,500 range, not as a change order later.

Who handles the rooftop installation and electrical work?

AJ Long Electric handles the rooftop installation and electrical work, including the panel, any required heavy-up, and interconnection, with a master electrician on site.

Is net metering still available in Virginia in 2026?

Yes. The State Corporation Commission's final order on April 30, 2026 kept Dominion's one-to-one net metering credit and left SREC ownership with the customer. New net metering customers pay a $1 per month administrative fee. NOVEC runs its own net metering program, and we file the interconnection for either utility.

How does net metering work in Northern Virginia?

Your meter runs both ways. Every kilowatt-hour the array exports during the day earns a kilowatt-hour credit against what you pull at night, and the credit carries forward month to month. The utility is set by your address, not your city name, so we confirm Dominion or NOVEC from your bill and file the interconnection paperwork for you.

Does Fairfax County charge a permit fee for solar?

No. Fairfax County Land Development Services waives the permit fee for residential solar, and the county exempts the solar equipment from property tax for five years. The City of Fairfax exempts it for ten years. We pull the permit and schedule the inspection either way.

Is the federal solar tax credit still available for homeowners?

No for residential systems. Section 25D does not apply to systems installed after December 31, 2025, and our proposals do not subtract a credit you cannot claim. Rental and business-owned systems may qualify for the commercial Section 48E credit if placed in service by December 31, 2027; confirm with a CPA. AJ Long Electric does not provide tax advice. Read the IRS page or ask a tax professional.

Can you install the battery and EV charger at the same time?

Yes, and it is the best time to do it. The array, the battery, the EV circuit, and the panel share a coordinated design and permitting plan, which can reduce duplicate electrical work. Battery and EV work are itemized on the same proposal.

Will solar keep my house on during an outage?

Not on its own. A standard grid-tied array shuts off when the grid goes down so it cannot back-feed line workers. Add a battery and transfer equipment, and the circuits you choose stay on while the array recharges the battery during the day. That is why we design the battery with the array instead of adding it later.

Do you offer $0-down solar financing?

We quote cash and loan. The published band, $19,000–$34,000 for a typical 8 to 12 kW system, is the cash installed price. A loan proposal shows that same installed price plus the lender's terms, so you can see the dealer fee and the interest instead of a monthly payment that hides them.

Who is on site for the installation?

A master electrician is on site for every solar project. Led by a master electrician. AJ Long Electric handles the racking and electrical installation.

Do you install commercial or utility-scale solar?

No. This is a residential service for Northern Virginia homes. Light commercial electrical is a separate service.

Authoritative sources

Sources reviewed 2026-09-01

Next step

Start with your bill and your address

Send a recent electric bill and the address. The roof, shade, electric usage, and electrical service inform the design; a site review confirms the written proposal.

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