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The cooperative difference

What makes us unique among utilities is that cooperatives like Tri-State are member-owned and governed, and operate on a not-for-profit basis. Our governing decisions are based on sound financial principles, utility industry best practices and, most importantly, the needs of our members.

We are different than investor-owned utilities. Our interests and business decisions are not driven by shareholders, but by those we serve: our members and their consumers. We are committed to providing reliable, affordable and responsible power to our members that serve consumers at the end of the line. At Tri-State, we work tirelessly to engage our members and ensure we meet their wholesale power needs and provide the services they value.

Tri-State serves independent, not-for-profit electric distribution cooperatives and public power districts, each governed by democratically elected boards of directors. These distribution systems directly power homes, farms and ranches, cities, towns and suburbs, as well as large and small businesses and industries across the West.

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Tri-State Generation and Transmission Association
Office: 303-452-6111
1100 West 116th Avenue
Westminster, CO 80234

Mailing address:
PO Box 33695
Denver, CO 80233-0695

©2025 Tri-State Generation and Transmission Association, Inc. Power supplier to the rural west.

  • About Us
    • Annual Report
  • Powering the Future
    • Our Energy Mix
  • Electrify and Save®
    • On-Bill Repayment
    • Programs
    • Quality Install
  • Media
    • Resources
    • Blog
    • Features
    • News
    • Newsletter
    • Podcast
  • Cooperative Benefits
  • Operations
  • Search