Thoma Electric
Company Overview
For additional details, please check our website. In 1962, Clarence Thoma launched Thoma Electric. The business environment shaped Bill and Ed, Clarence's sons. Bill earned his Electrical Engineering degree from Cal Poly San Luis Obispo. Edward pursued a BS in Industrial Technology at Cal Poly. In 1989, the sons purchased the business from Clarence and his wife. Since 1981, we have included Electrical Engineering in our services, witnessing consistent growth. Our workforce typically ranges from 60 to 70 employees, peaking at 150 during a five-story hospital project in Santa Maria for Marian Hospital in 2011. Thoma Electric features divisions dedicated to Electrical Engineering, Major Electrical Construction, Small Electrical Construction, and Electrical Services. “All projects are significant, regardless of size”. Thoma Electric can manage nearly any project from inception to completion, covering design and construction. We provide Data/Comm services, copper and fiber work, solar installations, and emergency standby power systems. I completed my BS in Industrial Technology at Cal Poly San Luis Obispo in 1983. I was employed at National Semiconductor from 1984 to 1986, serving as a Manufacturing Engineer in wafer fabrication. I returned to San Luis Obispo at the end of 1986 to join Thoma Electric as an Estimator and Project Manager. I now serve as the Company Safety Director and Manager of the Service Plus division, overseeing small to medium electrical projects. We assist with troubleshooting electrical issues and take on small time and material jobs for both homes and businesses. If you need urgent assistance, we offer after-hours emergency electrical services.
Business Services
- Electric inspection
- Electric repair
- Outlet repair
Business Location & Hours
Mon: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Excellent work and less expensive than their competitors. Their staff is professional, knowledgeable and pleasant. They also coordinated the necessary permit paperwork with the City. We will call them again!

Outstanding service! I had a problem with my electrical box at home, called these guys and the next morning they are at my door fixing my problem. I highly recommend them based on my experience and high touch service. Thanks-

From inquiry to completion, the team at Thoma Electric is outstanding. Thoma has a bad misconception in the community by those that think of them only doing large commercial projects when in reality they truly excel in the smaller jobs. We had originally worked with Thoma to put in some electrical outlets and wire two outside lights a few years ago. Having had a great experience we called again when a couple of plugs in our kitchen weren't working and I got a spark when removing an electrical cord. Making a convenient appointment was seamless and the electrician dispatched couldn't have been more helpful or competent. He explained why the outlets weren't working, identified another issue that he promptly fixed and then recommended that we purchase a new toaster oven, explaining that while we couldn't see the problem, it had a defective electrical cord that could potentially lead to problems down the road. The good news is -- I never liked that toaster oven and I'm happy to purchase another! Whether for new commercial developments, or fixing an electrical outlet in your kitchen, Thoma Electric gets my vote for being the best.

David was incredibly knowledgable, efficient, and swift in diagnosing and solving my electrical problem (hidden breaker). Would definitely recommend.

What a great company!
I needed to install Nema 14-50 for my new Tesla, a few other companies, gave me an estimate over $2000 and made it seems like so complicated due to location of the panel... Thoma Electric made it really simple and stress less, an electrician came to my house at 8:00 am finished the job in couple hours! It was just amazing to watch him working, climbing through the attic bringing thick wire to the garage. So professional, talented and on top of that I asked to fix my indoor outlets and he gladly did and no extra charge! The original estimate was $1300 but today I got the bill from Thoma Electric and it's only $600!!!
Such a honest and wonderful people!
Two thumbs up Thoma Electric!!! I also spoke to Tesla representative and they are definitely going to refer Thoma Electric to other Tesla customers in our community. My #1 electrical company! Thank you so much Thoma Electric!!!! Will be back

We have built a house, done lots of remodels and recently had need of an electrician for something no one could figure out. We were very impressed by the professionalism, thoroughness, patience to find the problem and explain to us what was needed. Loren was great!

For the past two and a half years Thoma Electric has competed both day to day maintenance and complex in-depth remodel/upgrade electrical projects for our office building complex. Professional service, quality work, timely/responsive, all at a fair price are hallmarks of Thoma Electric.
Jennifer McIntyre
Facilities, Sunrun

Fast. Easy. Perfect job installing an outlet. Very professional! I called in and John came out the next day with a bid. Even during holidays I was quickly scheduled and electrician was careful to wipe his feet every time he came in. This is the second time they've helped us out --- last time it was a tricky fan installation. Pleased? Indeed. Thanks so much!

I've worked with many electricians and this company is prompt, efficient, committed to doing the job right at a fair price. They are very responsive and will return your call/inquiry immediately. They are available anytime and were very helpful with a home inspection. The electrician was able to diagnose the problem immediately and offer several reasonable solutions. I plan on hiring them to make these repairs after hearing from others their great work. I also really appreciated John's initiative as he found a few additional issues during the inspection that the inspector didn't catch! And one of them he corrected because he cared about doing his job right. So happy to have found a good electrician in the area!

Our spray booth went down which put us at a dead stop for production which leads to all kinds of problems needless to say.
Called Thoma electric as we always do for out electrical needs and they sent Loren over within the hour and he determined problem, told us what was needed, I ordered it and once I recv'd the parts, he came back within a hour of notice and got us back making money.
To all at Thoma, You Guys Are Awesome!