
Residential Solar Installation in Northern Virginia
AJ Long Electric installs solar. The array, the interconnection, and the electrical system behind it are one project —...

Residential solar designed and installed with the panel, battery, and EV charging in one electrical plan. Trusted by Darnestown homeowners for over 30 years. Licensed, insured electricians serving Montgomery County.
Darnestown homeowners trust AJ Long Electric for professional residential solar installation services. With over 30 years serving Montgomery County, we understand the unique electrical needs of colonial, estate, custom homes throughout this neighborhood.
Many Darnestown homes experience large property electrical systems, which can affect residential solar installation projects. Our licensed electricians are familiar with local construction styles and know how to address common challenges efficiently.
AJ Long Electric installs residential solar. The array, the interconnection, and the electrical system behind it are one project: service capacity, busbar rating, grounding, inverter or backfeed connection, and how the system will share a panel with an EV charger or a home battery. We confirm the roof and electrical conditions, write the scope, pull the electrical permit path, and coordinate utility interconnection for the address. Panel upgrades, Level 2 charging, and wall-pack batteries are quoted in the same visit when they belong in the design. Roofing or structural work outside our electrical and array scope is identified in the proposal instead of buried in a later change order.
Every residential solar installation project we complete in Darnestown receives the same attention to detail and commitment to safety that has earned us over 1,400 five-star reviews. We handle all Montgomery County permits and inspections, ensuring your project meets current electrical codes.
Contact us today for a free estimate on residential solar installation for your Darnestown home. Our electricians will assess your specific needs and provide a detailed quote with no hidden fees or surprises.
Listed modules, inverters, and interconnection — not a referral to a solar-only shop.
The panel, EV circuit, battery, and array are planned together so the can is not full the day the solar shows up.
A load calculation decides whether the existing service can accept generation plus the house load.
Permit, inspection, and interconnection steps for the serving utility are confirmed before equipment is ordered.
The federal 25D 30% residential credit ended for new expenditures after December 31, 2025. We do not sell a credit we cannot deliver.
Roof, service size, busbar, existing EV or battery loads, and the interconnection method are documented.
Array, electrical, panel or battery work, and any excluded roofing or structural items are itemized.
Electrical permit and interconnection requirements are confirmed for the address before equipment is ordered.
Approved array and electrical scope is installed to the listed equipment instructions.
We coordinate the electrical inspection and the utility permission-to-operate steps in the defined scope.
Get Your Free Estimate
Contact us for a detailed, no-obligation quote for your Darnestown property.
Get a free estimate for residential solar installation in Darnestown.
Or call (571) 444-6886
FAQs
Residential Solar Installation costs in Darnestown vary based on several factors including array size and listed module and inverter selection, existing service and panel capacity, battery or ev integration in the same visit. For colonial homes in Darnestown, we provide free, detailed estimates so you know exactly what to expect. Contact us at (571) 444-6886 for a no-obligation quote specific to your Darnestown property.
Most residential solar installation projects in Montgomery County require electrical permits to ensure code compliance and safety. AJ Long Electric handles all permit applications and inspections as part of our service. We are fully familiar with Montgomery County's permitting requirements and ensure your project meets all Maryland electrical codes.
For colonial and estate homes common in Darnestown, residential solar installation typically takes varies based on scope. Factors like home age (around 1985) and accessibility can affect timeline. We always complete projects efficiently while maintaining our high quality standards.
Darnestown homes, many built around 1985, often present unique challenges: Large property electrical systems. Barn and outbuilding wiring. Our electricians have extensive experience with colonial construction and know how to address these issues efficiently during residential solar installation projects.
With over 30 years serving Montgomery County, we understand Darnestown's unique housing stock and electrical systems. We are licensed and insured in Maryland, maintain a 4.9-star rating with 1,400+ reviews, and provide upfront pricing with no hidden fees. Our electricians know the colonial, estate, custom, contemporary homes in Darnestown and deliver reliable, code-compliant residential solar installation services.
Yes, we offer same-day and next-day scheduling for residential solar installation projects in Darnestown when available. For urgent electrical needs, our technicians can often arrive within 2-4 hours. We maintain service vehicles throughout Montgomery County to ensure rapid response to Darnestown and surrounding neighborhoods.
All residential solar installation work in Darnestown is backed by our workmanship warranty and our satisfaction guarantee. We stand behind every project and return at no charge if any issues arise. Additionally, equipment and materials carry manufacturer warranties. We provide complete documentation for your records.
Explore our complete range of electrical services for Darnestown homeowners.
Property-specific electrical panel replacement and service-capacity planning, with load calculations, utility coordination, labeling, and permit-path confirmation.
Electrical hookups for customer-owned or dealer-supplied portable generators and battery equipment, including compatible transfer equipment and inlet connections.
Replace faulty, tripping, or outdated circuit breakers for reliable power distribution.
Property-specific branch-circuit installation for appliances, workshops, offices, and specialty equipment, sized to the connected load and existing panel.
We also provide residential solar installation in these nearby areas.
Guides
Expert electrical guides to help you make informed decisions.
A solar-ready panel is documented busbar capacity, backfeed space, and grounding — not modules on the roof. Plan it with EV and battery loads so you do not replace the panel twice.
A comprehensive guide to electrical panel upgrades covering signs you need an upgrade, the process, costs, and what to expect.
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.
Expert Resources
Guides our licensed electricians point residential solar installation customers to most often.

AJ Long Electric installs solar. The array, the interconnection, and the electrical system behind it are one project —...

A solar-ready panel is an electrical condition — documented capacity and backfeed space — not a roof full of modules....

Utility interconnection is paperwork plus a panel that can accept generation. AJ Long Electric does the electrical half...

The charger is the easy part. The panel math for a future battery and solar backfeed is what you want decided on the...
Contact us today for a free estimate. Our licensed electricians are ready to help with your residential solar installation project.
AJ Long Electric provides professional residential solar installation services in Darnestown, Maryland. We serve colonial, estate, custom, contemporary homes throughout Montgomery County. ZIP codes: 20874, 20878. Call (571) 444-6886 for residential solar installation near Darnestown Presbyterian Church and Seneca Creek.