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Bright Ideas, Brilliant Execution
Your choice for Industrial, Commercial, and Residential. We specialize in Industrial Control UL508A Panel-build's, PLC/SCADA design and troubleshooting, Fiber Optics splicing and installation, and Certified Generac Generator maintenance and installation.
24/7
Support With our On-Call Services
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Locations in the Black Hills and North-Eastern Wyoming
38
Talented electrican's
forming our team
LATEST
PROJECTS
Commercial
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02
Residential
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Industrial
Expectations
Professional
We employ skilled and trained MSHA Qualified electricians for all your maintenance needs or upcoming projects
CREATIVE
Custom Panel-builds for any system or application
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Reliable
Projects of any size, with an exceptional on time and under budget record
THE TEAM
Founded in 2015
21 Electric started in Newcastle Wyoming with aspirations to become the go-to contractor in the area for all your electrical needs. Since then, we have grown to a company employing more than 40 talented and skilled technicians from various fields and backgrounds. We currently service the immediate area around our shops in Newcastle WY, Sundance WY, Custer SD, but travel as far as required by our customers.
21 Electric built its current headquarters in 2020, expanded into Sundance WY in 2023, Custer SD in 2023, and Rapid City SD in 2025.
We employ Master Electricians and Plumbers in the state of South Dakota and Wyoming to best serve our communities.
Testimonials
“Very professional and quick response”
— Randy Dixon, Crook County
“Great staff and accommodations”
— pug.pug Keller
“Fantastic job, thanks Phil!”
— Cody Robertson
