Electrical Contractor in South Dakota and the Midwest
What We Do
- Commercial and industrial electrical construction
- Electrical design-build and engineering
- Power distribution and equipment integration
- Motor controls and drives
- Low-voltage and communication systems
- Electrical system upgrades and retrofits
- Electrical maintenance and service
Electrical Services
Leading projects with precision, accountability, and purpose.
Turning ideas into reality through unified design, engineering, and
construction. Licensed electricians, electrical engineers, and project managers
Collaborating early to deliver certainty in cost,
schedule, and performance.
Engineering solutions that connect innovation with real world performance.
Designing spaces that connect purpose, performance, and
possibility.
Call For Emergency Services
Proven Success Across Diverse Electrical Challenges
We are Your Go-To for all your Watertown & Surrounding Area Electrical Needs!
Headquartered in Watertown with offices in Sioux Falls we serve South Dakota and the wider Midwest. Licensed in SD, ND, MN, and specialty licensed in Sioux Falls, SD and Yankton, SD. Our service area includes much of Central and Eastern South Dakota — Codington, Hamlin, Deuel, Grant, Day, Brookings, Minnehaha, Clark, Brown, Spink, Beadle, Hanson, McCook, Moody, Lake, Davison, Hughes, Sully, Hyde, Hand, Buffalo and more — and western Minnesota counties Traverse, Big Stone, Lac qui Parle, Yellow Medicine, Lincoln.
How We Deliver Electrical Work
- Early involvement in electrical design and system planning
- Engineering coordination to support constructability and reliability
- Integration with automation, mechanical, and structural scope
- Clear communication between engineering, project management, and field crews
- Safe execution in both new construction and active facilities
Markets Served
Commercial
Electrical construction supporting commercial facilities through coordinated power, lighting, and low-voltage systems. Learn more →
Industrial
Electrical infrastructure for industrial facilities requiring scalable power and integrated equipment support.
Learn more →
Manufacturing
Agricultural
Electrical systems supporting agricultural processing and production environments with a focus on durability and reliability.
Learn more →
Water & Wastewater
Electrical systems designed for reliability and continuous operation in treatment and process facilities. Learn more →
Renewable Energy
Electrical systems supporting renewable energy facilities and related infrastructure. Learn more →
Licensed Electrical Contractor
- South Dakota
- North Dakota
- Minnesota
- Yankton, SD
- Sioux Falls, SD
Why Sentry
Sentry’s electrical work is not performed in isolation. Our teams coordinate across divisions to deliver systems that are engineered, installed, and commissioned as part of a complete facility solution.
Clients choose Sentry for electrical projects because of our ability to manage complexity, coordinate scope, and deliver systems that align with real-world operational needs.
Call us today at 605-520-9477 to schedule your next electrical service or to get a consult with one our licensed electricians here in Watertown, Sioux Falls, Pierre and the surrounding area.
Our Watertown Electrician team is a full-service team that is licensed and insured and is here to offer a comprehensive range of services to meet all your electrical needs. From design-build projects to controls and automation, residential and commercial services, prefab panels, and more, we have the expertise and experience to deliver top-quality results no matter the size or scope of the project.
Our team covers a wide area that spans for most of Central & Eastern South Dakota. Counties within our service area include: Codington, Hamlin, Deuel, Grant, Day, Brookings, Minnehaha, Clark, Brown, Spink, Beadle, Hanson, McCook, Moody, Lake, Davison, Hughes, Sully, Hyde, Hand, Buffalo and many more!
We now also cover areas in Western MN including: Traverse, Big Stone, Lac qui Parle, Yellow Medicine and Lincoln!