Services
Installs, repairs
& maintenance
Residential and commercial electrical work across St. Charles County. Free consultation and an upfront quote on every job.
01 — Panels
Panel Installation & Repair
Your breaker panel is where every circuit in the building starts. When it's out of space, out of date, or tripping for no clear reason, everything downstream suffers.
We install new and replacement panels and sub-panels, repair the one you have when that's the better call, and leave every breaker labeled.
- New and replacement breaker panels
- Sub-panels for garages, shops, basements and additions
- Breaker and fuse box repair
- Clear, accurate circuit labeling
02 — Repair
Troubleshooting & Repair
Half the house went dark. A breaker won't reset. The lights flicker when the dryer starts. We test until we find the actual fault, explain what we found, and quote the fix before doing it.
- Loss of power to rooms or circuits
- Tripping breakers and dead outlets
- Flickering or dimming lights
- Damaged, scorched or outdated wiring
03 — Lighting
Lighting & Ceiling Fans
New fixtures, replacements for tired ones, recessed lighting, ceiling fans and exterior lights. High ceilings aren't a problem; we bring the lift or ladder the job needs.
- Light fixture installation and replacement
- Recessed and under-cabinet lighting
- Ceiling fans, residential and commercial
- Exterior, security and landscape lighting
04 — Wiring
Outlets, Switches & New Circuits
An outlet where you actually need one, a switch moved to the right side of the door, or a dedicated circuit for a mini-split, appliance, workshop or home office.
- New outlets and switches, or moving existing ones
- Dedicated circuits for mini-splits, HVAC and appliances
- GFCI and exterior receptacles
- Wiring for remodels, basements and additions
05 — EV
EV Charger Installation
A Level 2 charger needs a dedicated 240-volt circuit sized for a continuous load, and your panel needs the room for it. We check that before we quote, so there are no surprises halfway through.
- Panel capacity checked before quoting
- Garage or exterior driveway mounting
- The charger you bought, or our recommendation
06 — Commercial
Commercial Electrical
Retail, office and shopping-center work. Recent jobs include an outdoor enclosure and receptacle for a shopping center's security cameras, power at the network backboard, and ceiling fans hung over a working store floor.
We schedule around your business, and we'll adjust when your schedule changes.
- Receptacles and dedicated circuits
- Power for cameras, network and IT equipment
- Interior and exterior commercial lighting
- Work scheduled around open hours
Common questions
Before you call
Do you charge for quotes?
No. Consultations and quotes are free, and the quote is upfront: you'll know the price before the work starts.
Are you licensed and insured?
Yes. Tharp Electrical Services is a licensed Missouri electrical contractor, bonded and insured.
Do you work on businesses as well as homes?
Yes, both. We work on houses, townhomes, condos and commercial buildings, from offices to shopping centers.
How can I pay?
Cash, check, Venmo or Zelle.
What are your hours?
Monday to Friday, 8:00am to 5:00pm. Leave a message or text outside those hours and we'll get back to you.
What areas do you cover?
Wentzville, O'Fallon, St. Peters, St. Charles, Lake Saint Louis, Dardenne Prairie, Cottleville, Weldon Spring and the rest of St. Charles County, plus the surrounding area. Not sure if you're in range? Call and ask.