| Business | Phone |
| Royal Electric 821 N Rainbow Rd, Spearfish 57783 | (605) 642-1417 |
| Scott's Electric 7 Jerry Rd, Spearfish 57783 | (605) 717-5483 |
| Electrical Systems 305 Seaton Cir, Spearfish 57783 | (605) 642-2095 |
| Grosfield Electric Co 422 Aviation Pl, Spearfish 57783 | (605) 578-1573 |
| Heartland Services Spearfish 57783 | (605) 920-1552 |