Electrical Service Upgrades in Potomac, MD

A panel upgrade replaces just the electrical panel (breaker box) inside your home. A service upgrade encompasses the entire power delivery system from the utility connection to the panel, including service entrance cables, meter base, weatherhead, and main panel. A service upgrade is needed when you are increasing your total amperage capacity.

A 100A to 200A service upgrade in the DC metro area typically costs $3,500-$7,500. A 200A to 400A upgrade is quoted per project based on the distance from meter to panel, whether service is underground or overhead, and specific utility requirements. We provide detailed quotes after a site assessment.

Field duration and outage time depend on the approved scope, service configuration, access, utility work, inspection sequence, equipment availability, and corrections. The written project plan identifies the expected work stages after the serving utility and authority requirements are confirmed.

That depends on the address, service configuration, ownership boundary, and approved scope. Meter work, disconnect and reconnect steps, service-lateral changes, or transformer review may require the serving utility. We confirm the applicable coordination path before scheduling field work.

Most modern homes require at least 200-amp service. Large homes with multiple high-draw systems (EV chargers, heat pumps, electric cooking, pool equipment) may need 400-amp service. We perform a detailed load calculation based on your current and anticipated electrical needs to determine the right service size.

Potomac homes are mostly large-lot custom homes, so we frequently encounter 200-400A services for pools and accessory structures. The most common situation we address is pool bonding and detached-structure feeders on Avenel and River Falls lots. Permits for this work go through the Montgomery County Department of Permitting Services, and estate-scale work places Potomac jobs in the higher price band. That local knowledge means AJ Long Electric arrives prepared for the conditions specific to Potomac rather than treating it like any other Montgomery County job.

Electrical Service Upgrades costs in Potomac depend on scope, access, materials, and complexity. AJ Long Electric provides a written estimate after assessing the relevant property conditions. Call (571) 444-6886 to request an estimate specific to your home.

Most electrical service upgrades projects in Montgomery County require an electrical permit from the Montgomery 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 Maryland electrical codes.

Electrical Service Upgrades projects in Potomac typically take Defined after utility, AHJ, equipment, access, and outage requirements are confirmed to complete. Timelines can vary based on the scope of work, permit approval speed in Montgomery 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 John Long, 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 Potomac address.