Triangle Electric, Inc
2644 1st Ave E, Williston, North Dakota, United States

Triangle Electric, Inc., is a family owned business started in 1946 by Harold Hoffelt, Oscar Stenehjem, and Selmer Johnson.  Electricity service was expanding and rural electrification to western North Dakota and eastern Montana was a big part of our early business. Appliance sales and service was also included. The company name was selected from a pool of contest entries that responded to an ad in the Williston Herald in 1947.  When the oil and gas exploration began in North Dakota in the early 1950’s, Triangle Electric was well established and participated in the first major oil boom in the Williston Basin. Commercial and residential construction projects were at an all-time high, and these structures still serve our community. Ellsworth Larson held the master’s license under which Triangle operated for 35 years.  In 1963, Dennis Hoffelt returned from UND with a degree in business management and joined his father, Harold, as a partner with the firm. Dennis served as general manager from 1963-1996. Glen Heller was Triangle Electric’s oil and gas general foreman during the oil boom of the late 70’s and early 80’s. In 1978, Donn Hoffelt, an electrical engineer, joined his father and brother in the partnership. Following Herald’s retirement in 1980 and Dennis’s retirement in 1996, Donn became sole proprietor and currently serves as company president. Under Donn’s management, Triangle Electric has grown from approximately 50 employees in 2008 to approximately 300 electricians and support staff in 2013.  For the last decade, all oil and gas crews were managed by Ron Ihmels, who has 40 years’ experience in the electrical industry as both master electrician and an electrical inspector with the state of North Dakota. In his final years with Triangle Electric, Ron not only handled a large workload but also acted as mentor for many, up-and-coming project managers. Our project management is performed by seasoned individuals who have years of oil and gas industrial electrical construction experience.

 Since our inception in 1946, Triangle Electric, Inc. has remained locally owned and has operated primarily in eastern Montana and western North Dakota. Triangle Electric specializes in large industrial and commercial electrical construction projects. Throughout the years, Triangle Electric has produced a sizable crop of highly skilled, well-trained, and competent industrial oilfield electricians.  Triangle Electric’s reputation as a legitimate contractor has been earned through nearly 7 decades of successful projects and satisfied customers. With bases of operation located in Williston, Watford City, and Tioga, Triangle Electric has the ability to effectively serve all areas of western North Dakota.  As the Bakken continues to grow, we look forward to serving new customers and taking on new challenges.Triangle Electric, Inc., is a family owned business started in 1946 by Harold Hoffelt, Oscar Stenehjem, and Selmer Johnson.  We firmly believe the overall factor in our success is simple:

Specialized in Providing Professional Electrical Construction

Triangle Electric has specialized in providing professional electrical construction services for oilfield production, facilities, L.A.C.T, and compressor station requirements since the 1950’s. With bases of operation in the following locations, we have the ability to serve all corners of the Bakken.

We provide exceptional services in the following areas:

• Class 1 Division 1 and Class 1 Division 2 design/build electrical installations of any complexity.
• Electric motor and variable frequency drive installation as well as troubleshooting and customized control applications.
• Instrumentation and Calibration services performed by experienced journeyman electricians possessing various EPRI and IBEW/UA certifications.
• Instrumentation services performed by certified technicians.
• Maintenance contracts covering any industrial plant or facility.
• On-Call Electricians available 24/7 to respond when issues arise. Our message center will connect you with the on-call electrician.
• Prefab services including electrical design and construction of skid buildings (MCC/control and vessel/processing buildings) and panel boards.
• Project management services completed by seasoned electricians with decades of oil and gas experience.
• Troubleshooting and diagnosis of any electrical related issues.
• Underground electrical construction, including trenching and cable locating services.