Kingsport Electrical Panel Services 

High-Quality Panel Upgrades & Maintenance

At Thompson Electrical Service, we understand that the electrical panel is the heart of any electrical system. It distributes power safely throughout your home or business and keeping it functioning reliably is essential. Serving Kingsport, Bristol, Johnson City, and the surrounding Northeast Tennessee region, we provide comprehensive panel services, including upgrades, replacements, maintenance, and troubleshooting.

Our work is fully licensed and insured, following national and local codes. With more than 20 years of experience and an accredited BBB A+ rating since 2010, we combine trust, reliability, and technical skills to meet your electrical needs. Our full-service team handles everything from wiring and HVAC to smart home technology and panel work, with transparent pricing, payment plans and financing options.

Call (423) 840-7457 or contact us online to discuss your panel project today or request a free estimate. Our team is also available 24/7 for emergency services whenever you need it.

Our Panel Services

Panel Upgrades & Replacements

Upgrading to a higher-capacity panel allows your system to handle growing electrical demands. Whether it’s a remodeled kitchen, a new accessory dwelling unit, or installing EV infrastructure, we manage the full process. That includes obtaining permits, removing the old panel, and installing a new one according to current code requirements.

Load Balancing & Circuit Configuration

A properly balanced panel ensures circuits are distributed, so no single breaker is overloaded. For commercial properties with large equipment, this improves reliability and reduces downtime. For residential clients, a better circuit layout prevents nuisance trips and ensures consistent performance.

Sub-Panels for Additions & Outbuildings

Adding a guest house, garage workshop, or other exterior structure? Installing a sub-panel expands electrical capacity safely, keeping your main panel manageable while providing convenient access to power in new areas.

Panel Safety Inspections

Routine inspections include reviewing bus bars, breaker conditions, grounding, labeling, and clearance requirements. Identifying worn components or code non-compliance helps prevent future failures and ensures your electrical system remains safe and reliable.

Modernization for Smart Systems & Future Loads

Homes and businesses are increasingly using smart devices, home theaters, EV chargers, and high-capacity HVAC systems. A modernized panel supports these upgrades without overloading existing circuits, keeping your property future-ready.

What the Process Looks Like

1. Initial visit and assessment. We inspect your current panel, evaluate your electrical loads, and discuss options for upgrades or repairs.
2. Detailed proposal and scheduling. You will receive a transparent estimate covering labor, materials, permitting, and clean-up. 
3. Installation or service work. Our licensed technicians follow the NEC and local codes, completing work efficiently and safely.
4. Final testing and walk-through. All circuits are verified, labeling is confirmed, and we explain breaker operation and load monitoring.
5. Follow-up and support. Warranty coverage is included, and our team is available 24/7 for emergency services if needed.