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Whatever the future holds
we'll power it

 

More clean energy, fewer emissions

Tri-State Generation and Transmission is a wholesale power supplier based in Westminster, Colorado. We provide electricity for 42 utilities across the rural west. Together, with our members, we keep the lights on for one million energy consumers in Colorado, Nebraska, New Mexico and Wyoming.

As a not-for-profit, we carefully consider how we spend each dollar to operate and maintain a resilient system, keeping dependable energy just a switch away.

Learn how we do it

Our principles guide our work

Responsibility has always been a part of how we approach our business—we’re responsible for more than just providing electricity. We do it with respect for the natural environment and resources we share, the communities we serve, and the employees we support.

Learn more about our Environmental, Social and Governance

 

 

Where we serve

 

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Find your co-op

 

 

By the numbers

70+
years of providing reliable energy
1M+
homes and businesses powered daily
50%
renewable energy by 2025
 

Member-driven,
not profit-driven

At Tri-State, we’re not just an electric utility, we’re a network. As a cooperative, we don’t answer to shareholders, we answer to our neighbors. We work together. From supporting each other in times of need to access to low-cost utility-scale renewables, membership in Tri-State delivers more value today than ever before—and that’s the cooperative difference.

Learn more about the cooperative difference

Electrify and Save

Clean energy can save you money and benefit the environment. Learn how going electric can lower your monthly energy bills, reduce emissions, and improve quality of life.

Electrify your life

 
Rethinking the American Dream in Colorado’s Mountain Towns 

Rethinking the American Dream in Colorado’s Mountain Towns

Located about five hours away in Buena Vista, Colorado, served by Tri-State member Sangre de Cristo Electric Association, real estate developer Fading West is finding solutions to meet the needs of affordable housing for essential workers in the community.
Read more >
Tri-State G&T Comms Conference 2023

Learning Together Throughout the Years: 2023 Communications and Energy Services Conference 

Last week, cooperative colleagues joined Tri-State Generation and Transmission Association at the annual 2023 Communications and Energy Services Conference in Westminster, Colorado. Tri-State has hosted the event for over two decades, bringing together 42 members and key partners from across 200,000 square miles of the West. The theme of “Co-op Campus” this year provides opportunities for members to learn from each other.
Read more >
Communities Win with Rebates: Two Business Owners Make Rebates Work for Them

Communities Win with Rebates: Two Business Owners Make Rebates Work for Them

Cooperatives like Big Horn are always looking for ways to better serve their member-owners. One way of doing that is by offering rebates for energy-efficient home and business upgrades.
Read more >
 

Tri-State member cooperatives celebrate halfway point of construction for Escalante Solar

Ceremony at Escalante Solar near Grants, N.M. highlights the installation milestone for near 500,000 panels for the 200-megawatt project.
Read more >

Tri-State and United Power execute settlement Term Sheet

Terms outline Settlement Agreement for power purchases, sale of utility assets and litigation dismissal.
Read more >

Tri-State receives USDA Rural Energy for America’s Technical Assistance Grant

Agricultural producers and rural small businesses will have greater opportunities for renewable energy and energy efficiency investment.
Read more >

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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

©2023 Tri-State Generation and Transmission Association, Inc. Power supplier to the rural west.

  • About Us
  • Responsible Energy Plan
    • Renewable Energy
  • Media
    • Resources
    • Blog
    • Features
    • News
  • Cooperative Benefits
  • Operations
  • Careers
  • Search