- Spark Electric
- Specialty Electric
- Sprague Electric Corp
- Spring View Electric
- Springfield Electric Inc
- Springfield Electric Inc
- Staashelm Electric
- Stan's Electric
- Star City Electric
- Stegeman Services
- Steve Andersen Electrical Inc
- Steve's Electric
- Stevens Electric
- Stoelting Electric & Seeds
- Stoffel Electric
- Storm's Electric
- Strata Corp
- Strategic Electric
- Stumpf Electric
- Stumpf Electric
- Suburban Electric
- Sun Electric
- Sunny SLOPE/Duco Electric
- Sunshine Electric
- Sunshine Electric
- Superior Electric Co
- Superior Electric Co
- Swanson Electric
- Swanson Electric
- Sweet Electric Inc
- T & B Electric Inc
- T & M Electric
- T & M Electric Inc
- T & M Electric Inc
- T J's Electric
- T W Electric
- Tarr Electric
- Tarr Electric
- Tatanka Electric Construction
- Taverna Electric
- TCB Electric Inc
- Team Electric
- Team Electric
- Ternes Electric
- Terry Larson Electric
- Tesla Electric
- Thomas Combs Electric
- Thompson Electric Co
- Thomson Electric
- Thomson Electric
- Tiger Electric
- Tim's Electric & Electronics
- Titan Electric
- TKO Electric
- Tober Electric
- Todd Valley Plumbing & Heating
- Tom's Electric Svc
- Tom's Electric Svc
- Tory Copeland Electric
- Tory Copeland Electric
- Total Electric
- Travis Electric
- Travis Electric
- Trede Electric & Lighting
- Tri-City Electric
- Triangle Electric Inc
- Triska Electric
- Tritsch Electric Co Inc
- Tritsch Electric Co Inc
- True Power Electric Inc
- Tupa Electric
- United Electric
- Upper Missouri G & T Elec Coop
- Vacanti Brothers Electric
- Van Enk Electric Inc
- Van's Electric Co
- Vaughn Electric
- Vest Electric Inc
- Vest Electric Inc
- Vierregger Electric Co
- Viking Electric
- Viking Electric Inc
- Vision Contracting
- Wahpeton Electric
- Walter Roenfeldt
- Walter Roenfeldt
- Walters Electric Inc
- Wanna Be Electric
- Waslien Electric
- Waslien Electric
- Watts Electric
- Watts Electric
- Wayne's Electric Inc
- Welle Electric
- Wemhoff Electric
- Wemhoff Electric
- Wemhoff Trenching & Electrical
- Wemhoff Trenching & Electrical
- West Fargo Electric
- West-E-Con
- Westgate Electric Inc
- Wibe Electronics Inc
- Wick Electric
- Wiger Electric Inc
- Wilhelm
- Wilhelm
- William K Sullivan Electric
- Williamson Electric
- Willmar Electric Co
- Willmar Electric Svc
- Wilson Electric
- Wiltse Electric
- Wiltse Electric
- Windy Acre Electric
- Winkler Electric Inc
- Wohl's Electric Inc
- WOLD Electric & Refrigeration
- WOLD Electric & Refrigeration
- Wolf Electric
- Wolf Electric
- Wolfe Electric
- Wolfe Electric
- Woolman Electric
- Wulff Electric Inc
- Young's Electric & Plumbing
- Zip Electric
- Zouncha Electric Marv
- Zouncha Electric Marv