Keeping The Lights On

family owned - expertly operated


Providing Commercial, Industrial & Residential Electrical Services in the Sioux City Metro Area.

Electricity is life changing when it works properly, devastating when it doesn’t. That’s why our team at Trinity Electrical Services works around the clock to make sure we provide the best and most reliable electrical solutions for residential, commercial, and industrial needs.

Our local electricians are fully bonded, insured, and expertly trained. We make a point to shed light on situations quickly and we come with some pretty powerful connections. Providing power for the Sioux City Metro area is our business, and we take it seriously.

Trinity Electrical Services is here to help power your residential, commercial, and industrial electrical needs. Call us today to schedule your free estimate.

A letter from Gregg and Krissy Lamoreux, owners of Trinity Electrical Services:

Thank you for considering Trinity Electrical Services.  We would like to take a moment to introduce to you who we are.  We are a family-owned electrical contracting company based in Sioux City, Iowa.  We are licensed to perform electrical work anywhere in Iowa, Nebraska, and South Dakota.  Gregg Lamoreux is the owner/operator of Trinity Electrical Services.  He enjoys taking an active role in the day to day operations of the business, both in the field and in the office.  Gregg began his career in the electrical field in 1995, obtaining his journeyman wireman license in 2001, followed by his master electrician license in 2008.  Prior to establishing Trinity Electrical Services in 2011, Gregg had been in a supervisory role for several large commercial and industrial projects overseeing the work of as many as twenty four electricians on one project.

 Gregg, along with his business partner and wife Kristine, built Trinity Electrical Services from the ground floor.  We currently have 32 employees on staff.  All employees were personally hired by Gregg and are required to complete a thorough and ongoing safety program along with adherence to strict company policy and behavior standards. They are all equipped with the proper licenses and certifications required to perform the required task.  Continuing education for all of our employees is a high priority as we understand that we work in an ever changing field.  Customer satisfaction is at the root of every decision we make at Trinity, from hiring, marketing, size of projects worked on, and price.  Our goal is to strive to be the very best at what we do.  Thanks again for considering us!

 Licenses held:

·         Iowa EL-9071-EC

·         NEBRASKA 17340

·         SOUTH DAKOTA EC 2621

 If you have any questions, please contact Gregg at (712) 333-9134 or email at  We look forward to working with you in the near future! 


 Gregg Lamoreux, President

Kristine Lamoreux, Vice President


When it comes to your electrical needs, we get it: you don't want to spend a lot of time babysitting your electrician. You want someone who does quality work at an affordable price; you want someone you can trust when your back is turned.  At Trinity Electrical Services, we make keeping the lights on easy, whether those lights are in your kitchen, your store front, or your warehouse. The proof is in the pudding (or wiring, in our case), so check out Our Work.

Give us a call and we'll be there as soon as possible to get everything in working order. Feel free to take off for a long lunch or a round of golf--we'll take it from here.





Get in touch:

Trinity Electrical Services

600 N. Derby Ln, Suite 101

North Sioux City, SD 57049

Phone: (712) 333-9134


E-mail us using the form below or send a message to

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Trinity Electrical Services feels strongly about supporting out community and different organizations.  Take a look at a few of the events we have sponsored!

Girls, Inc, of Sioux City

Girls, Inc, of Sioux City

Child Evangelism Fellowship

Child Evangelism Fellowship

Children's Museum of Siouxland

Children's Museum of Siouxland