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Headquarters:
1100 West 116th Avenue
Westminster, CO 80234
General Mailing Address:
P.O. Box 33695
Denver, CO 80233
Phone: (303) 452-6111
Hours of Operation: 7:30 am to 5:00 pm Mountain standard time
If you have questions for a specific department at Tri-State, please direct your e-mail inquiries to the following contacts:
E-mail Addresses:
Corporate Communications
Development Projects
Environmental
Generation
Information Technology
Research and Development
System Operations
Transmission East
Transmission West
Webmaster
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