Southern Voltage Electric Service
Company Overview
An experienced master electrician boasting over two decades in the field, he holds licenses in three different states. He graduated from Milwaukee Area Technical College's apprenticeship program in 1997. He has handled projects from changing light fixtures to wiring entire hospitals. He has performed electrical work for prestigious organizations like the Federal Reserve Bank, Anheuser Busch, Racine Zoo, Barnes Jewish Hospital, Allied Wire and Cable, and many private homes. With his vast knowledge, he can determine the optimal solution for any electrical problem.
Business Services
- Electric inspection
- Electric installation or replacement
- Electric panel installation
- Electric repair
- Light fixture installation
- Light fixture repair
Business Location & Hours
Mon: | Open 24 hours |
Tue: | Open 24 hours |
Wed: | Open 24 hours |
Thu: | Open 24 hours |
Fri: | Open 24 hours |
Sat: | Open 24 hours |
Sun: | Open 24 hours |
Recommended Customer Reviews

Very nice and came out quickly but $235 to change one gfi outlet that I provided seems very high. That does include the one time 60 trip fee. Maybe it's the going rate but just seems very high priced!

Tired of shady and/or unreliable electricians? Look no further. Jim De Vault is very experienced, and has an excellent understanding of what you need. Quick response time, great workmanship and transparency with regards to cost/time.

Great company and great people. Highly recommended them for small or big jobs. Certified Master Electrician.

Excellent customer service, prompt arrival and extremely professional. I had to get an opinion on work that was being required after my house was inspected for selling. Jim read the report and was quick to assess what needed to be done and what was ""extra"" and not needed. It's nice to know that they are a family run company. Love supporting my local businesses. If you do too, this is the company you need to use. Highly recommend them.

As a woman, I deal with repair and service people all the time. What I have never experience with Jim DeVault is any disrespect when it comes to explaining an issue to me. I have had some service people talk down to me. Jim is a master electrician so is very knowledgeable, he arrives on time, gets right to work, and tidies up when done. His wife Miriam schedules the appointments, so you are dealing directly with the owners of the business. Southern Voltage is the only electrical company I use.

Great job! Came out the day I called after hours! Very nice and let me know of the service fee upfront. Will use them again to switch out my old outlets.

Company very responsive & charged a $50 service call fee, but the owner advised that if we decided to have an electric plug installed on our backyard patio, it would be $375, but they would apply the $50 service fee against the $375 fee. We set up an appointment for the following week & the new plug was installed. Unfortunately, they did not give us credit for the $50 service fee as promised. When I called the office & spoke to the owners wife, she was very rude & refused to honor the $50 credit, as her husband previously stated. Know this is their real policy, regardless of what they initially promise.

Fabulous Master Electrician!!
Southern Voltage Electric Service is handsdowns THE best electrician in the Katy area! Jim and Miriam DeVault are the owners of this Katy business. They live in Katy and work here. Jim is a Master Electrician and he really knows so much about electrical issues. He is patient and kind and will explain things to you if you want him to. He will charge you a fair and reasonable amount and you will be pleased with his work. He shows up on time and calls if he is the least bit late. He is professional and very knowledgeable. I trust Jim to do all of my electric work. Give Miriam a call today so you can get on their schedule. They have super amazing customer service. Miriam's number is 832-713-7584. They are great people to know and work with!! I can't say enough good things!

Southern Voltage is a top notch company! They are awesome people that know how to run a business and take care of their customers. They can solve any electrical problem you throw at them.

Jim Devault is knowledgeable and reliable. I trust his opinion, and I do not hesitate to recommend Southern Voltage.