Commercial
We deliver high-quality commercial electrical construction services tailored to meet the demands of modern facilities and fast-paced project schedules.
From new ground-up builds to tenant improvements and system upgrades, our team provides safe, efficient installations with a strong focus on coordination, code compliance, and long-term reliability.
Working closely with general contractors and project stakeholders we ensure seamless execution, delivering everything from power distribution and lighting systems to controls and specialty installations—on time and built to perform.
Industrial
We provide comprehensive industrial electrical services designed to keep operations running safely and efficiently.
Our UL-listed 508A panel shop deliver's custom control solutions tailored to each facility’s needs, and assures compliance to all NEC codes and OSHA/MSHA safety standards.
From new construction projects to complex system expansions or upgrades, our team ensures quality installations that meet demanding industrial standards. We specialize in rapid troubleshooting and diagnostics to minimize downtime, backed by experienced electricians who understand critical processes.
Our critical maintenance team offers comprehensive IR scanning and testing for VFD's, Transformers, and Circuit Breakers. Testing is preformed by NICET certified technicians strongly adhering to all manufacturers and NETA standards. Whether your system is new and needs acceptance or already exists in your critical process and needs maintenance testing we have you covered.
We also offer component rebuilding services to extend the life of existing electric mining equipment, reduce replacement costs, and maintain system reliability across your operation. From draglines to Haul trucks we have you covered.
Residential
21 Electric provides reliable residential electrical services designed to keep homes safe, efficient, and up to modern electrical standards.
Our residential work includes Certified installation of Generac generators, new home wiring, panel upgrades, service replacements, troubleshooting, lighting installations, and remodel or addition wiring.
Whether it’s a small repair or a full electrical system installation, our licensed electricians bring the same level of professionalism and quality used in our industrial work to every home project. We focus on safe, clean workmanship, and dependable solutions that homeowners can trust for long-term performance.
Our Story
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 65 talented and skilled technicians from various fields and backgrounds. We currently service the immediate area around our shops in North-eastern Wyoming and the Black Hills of South Dakota, 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, Rapid City SD in 2025 and Gillette WY in 2025.
We employ Master Electricians and Plumbers in the state of South Dakota and Wyoming to best serve our communities.
2015
Year of Establishment
400+
Projects Completed
Josh Liggett
Owner, 21 Electric LLC
68
Professional Employees
5
Locations
Commercial Construction
Residential Construction
Industrial Construction
Component Repair
UL-508A Panel Builds
Certified Generac Generator Installation
NETA Testing, Acceptance and Maintenance
24/7 Callout Support
What We Do
Our Projects
Our project experience spans a wide range—from custom homes requiring precision craftsmanship and attention to detail to multi-million-dollar plant construction demanding complex coordination and industrial expertise. No matter the size or scope, we bring the same commitment to quality, safety, and delivering reliable electrical solutions that perform.
Our Clients
We believe each client is a long term partnership
