We have two offices and warehouses that are open from 7:30 a.m. to 4:00 p.m., Monday through Friday.
Denison Headquarters, 809 Highway 39 North, PO Box 428, Denison, IA 51442
Phone: 712-263-2943, Toll Free: 800-253-5189, Fax: 712-263-8655
Onawa Office, 418 East Iowa Avenue, PO Box 115, Onawa, IA 51040
Phone: 712-433-1622, Toll Free: 800-279-4107, Fax: 712-433-2725
Please report all power outages and emergencies, 24 hours a day, by calling 800-253-5189.
Use the form below to submit non-outage or non-emergency related inquiries and a customer care representative will be in touch or call 800-253-5189 during our business hours (7:30 a.m. to 4:00 p.m., Mon-Fri).