| Business | Phone |
| Allete Inc 30 W Superior St, Duluth 55802 | (218) 279-5000 |
| Commercial Electric Co 1628 London Rd, Duluth 55812 | (218) 728-2220 |
| Minnesota Power 3215 W Arrowhead Rd, Duluth 55811 | (218) 722-0264 |
| Minnesota Power 7204 Rice Lake Rd, Duluth 55803 | (218) 721-3220 |