
Home Battery Wall Pack Installation in Northern Virginia
A wall pack is silent indoor backup tied to selected circuits. Here is how AJ Long Electric supplies and installs...

Listed home battery and wall-pack installation with panel integration, transfer equipment, circuit selection, and permit-path confirmation. Trusted by homeowners throughout Loudoun County since 1996.
AJ Long Electric provides professional home battery & wall packs services in Sterling, VA. Our licensed electricians have served Loudoun County for over four decades, delivering safe, code-compliant electrical work for homeowners and businesses. With deep experience across every type of residential electrical project, we bring both technical expertise and local knowledge to every job we complete in the Sterling area. In Sterling specifically, we most often work on 1970s-1990s Sterling Park plus newer Cascades homes, where older 100-150A panels in Sterling Park, 200A in Cascades are common — a backdrop that shapes how we approach home battery & wall packs here.
In neighborhoods like Countryside, Sugarland Run, Cascades, Potomac Falls, Sterling Park, near landmarks such as Claude Moore Park, Algonkian Regional Park, Sterling Community Center, we have completed countless home battery & wall packs projects. Our familiarity with local building codes, inspection requirements, and the common electrical challenges found in Loudoun County homes ensures your project is completed correctly the first time. On the ground in Sterling, the issue we run into most is aging Sterling Park panels and EV additions in Cascades and Countryside. Because the work is permitted through the Loudoun County Building & Development, we pull the permit, schedule the inspection, and verify grounding to NEC 250 before we close out — and Loudoun County permit fees are folded into the quote.

Our licensed electricians serving Loudoun County
When you choose AJ Long Electric for home battery & wall packs in Sterling, you are partnering with a team that understands your community. We have been serving Loudoun County since 1996, building relationships with homeowners in Countryside, Sugarland Run, Cascades, Potomac Falls, Sterling Park, and earning a reputation for excellence near Claude Moore Park, Algonkian Regional Park, Sterling Community Center. Our electricians are familiar with the unique electrical challenges in Sterling, including 100-amp panel upgrades in 1960s-1970s Sterling Park homes, FPE Stab-Lok panel replacements in Sugarland Run, Data center corridor grid voltage fluctuation protection. This local expertise means faster service, accurate estimates, and installations that meet both your needs and local code requirements.
Licensed & Insured
Since 1996
5-Star Rated
The design starts with the circuits that matter during an outage, not a one-size whole-house package.
We supply EcoFlow, Bluetti, and Anker SOLIX systems, or connect other listed customer-selected batteries.
Transfer equipment or a smart home panel keeps utility and battery sources from backfeeding each other.
Battery systems produce no exhaust, so they can sit in a garage or utility space without a fuel-burning generator.
Grid and, where the equipment allows, solar recharge are documented in the written scope.
AJ Long Electric supplies and installs listed home battery equipment, or connects customer-selected listed batteries, so selected household circuits stay powered during an outage. The defined scope may include a wall-mounted power station, a backed-up-load panel or smart home panel, transfer equipment, conductors, protection, labeling, and commissioning. We start with the circuits you want to keep alive, the equipment ratings, the existing panel, and the route. Portable generator hookups stay on the generators page. Tesla Powerwall and Enphase whole-home product sales are quoted only when the listed equipment and interconnection path are confirmed for the property. In Sterling, we have seen how 100-amp panel upgrades in 1960s-1970s sterling park homes affects homeowners. That is why we take the time to assess your entire electrical system and recommend solutions that address both immediate needs and long-term reliability. Every home battery & wall packs project we complete in Loudoun County includes a thorough inspection, detailed documentation, and our commitment to your complete satisfaction.
| Typical cost in Sterling | $2,500-$6,000 portable; $6,000-$15,000+ whole-homeLoudoun County permit fees are folded into the quote. |
|---|---|
| Typical timeline | 4-10 hours |
| Permit authority | Loudoun County Building & DevelopmentWe pull the permit and schedule the Loudoun County inspection on your behalf. |
| Applicable code standard | National Electrical Code (NFPA 70), as adopted in VA |
| Most common local condition | Aging Sterling Park panels and EV additions in Cascades and Countryside. |
Permit fees, scope, and existing-condition surprises affect final pricing. Verify current requirements with the Loudoun County Building & Development and review the NFPA 70 (National Electrical Code).
We list the circuits you want backed up and check running and starting loads against the equipment ratings.
AJLE-supplied EcoFlow, Bluetti, or Anker gear, or a customer-selected listed battery, is confirmed for the panel and location.
The proposal separates equipment, panel work, transfer devices, routing, and permit coordination.
Electrical permit and inspection requirements are confirmed for the property.
The battery, transfer or smart-panel connection, conductors, and labels are installed to the defined scope.
We test the switching sequence, set charging, and walk through normal operation.
We supply and install listed EcoFlow, Bluetti, and Anker SOLIX wall-pack and power-station systems, and we connect other listed customer-selected batteries when the equipment, panel, and manufacturer instructions are compatible. Tesla Powerwall and Enphase product lines are evaluated per project.
$2,500-$6,000 portable; $6,000-$15,000+ whole-home, depending on capacity, whether the unit is portable or hardwired through a smart home panel, and the number of backed-up circuits. Equipment and electrical work are itemized on the written proposal.
Yes. Inlet boxes, manual transfer switches, and listed interlocks remain on the portable generator hookups page. This page is for battery wall packs and hardwired battery integration.
Many listed systems recharge from the grid and can accept solar input when the inverter and interconnection are designed for it. We document that electrical path. Rooftop solar installation is a separate, gated offer.
Hardwired transfer equipment and smart-panel connections typically need an electrical permit. We confirm the path for the address before work is scheduled.
Sterling homes are mostly 1970s-1990s Sterling Park plus newer Cascades homes, so we frequently encounter older 100-150A panels in Sterling Park, 200A in Cascades. The most common situation we address is aging Sterling Park panels and EV additions in Cascades and Countryside. Permits for this work go through the Loudoun County Building & Development, and Loudoun County permit fees are folded into the quote. That local knowledge means AJ Long Electric arrives prepared for the conditions specific to Sterling rather than treating it like any other Loudoun County job.
Home Battery & Wall Packs costs in Sterling typically range from $2,500-$6,000 portable; $6,000-$15,000+ whole-home depending on scope and complexity. AJ Long Electric provides free written estimates for all home battery & wall packs projects in Loudoun County. Call (571) 444-6886 for an accurate quote specific to your home.
Most home battery & wall packs projects in Loudoun County require an electrical permit from the Loudoun County building department. AJ Long Electric handles all permit applications and scheduling of required inspections as part of our service, ensuring your project meets all Virginia electrical codes.
Home Battery & Wall Packs projects in Sterling typically take 4-10 hours to complete. Timelines can vary based on the scope of work, permit approval speed in Loudoun County, and any unforeseen conditions found in your home's existing electrical system.
AJ Long Electric has served the region since 1996. We are a licensed, insured electrical contractor led by a master electrician, and we define the scope, access assumptions, exclusions, and project-specific coordination before authorized work begins.
Scheduling depends on the current workload and the project scope. Call (571) 444-6886 or request an appointment online and we will confirm the earliest available time for your Sterling address.
Typical Price Range: $2,500-$6,000 portable; $6,000-$15,000+ whole-home
Contact us for a free estimate tailored to your Sterling home.
Ready to discuss home battery & wall packs for your Sterling home? Contact AJ Long Electric today at (571) 444-6886 for a free consultation. We proudly serve all of Loudoun County, including the neighborhoods of Countryside, Sugarland Run, Cascades, Potomac Falls, Sterling Park. Our team is standing by to answer your questions and schedule a convenient appointment.
We also provide professional home battery & wall packs services in these nearby communities.
Expert Resources
Guides our licensed electricians point home battery & wall packs customers to most often.

A wall pack is silent indoor backup tied to selected circuits. Here is how AJ Long Electric supplies and installs...

The charger is the easy part. The panel math for a future battery and solar backfeed is what you want decided on the...

A solar-ready panel is an electrical condition — documented capacity and backfeed space — not a roof full of modules....
Guides
Expert electrical guides to help you make informed decisions.
Listed EcoFlow, Bluetti, and Anker SOLIX wall packs versus a portable generator hookup. What the electrical scope includes, what it costs, and when a smart home panel is worth it.
Everything Northern Virginia homeowners need to know about backup power: safely connecting a portable generator with a transfer switch or interlock kit, or installing a silent, fuel-free battery power station.
A comprehensive guide to electrical panel upgrades covering signs you need an upgrade, the process, costs, and what to expect.
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