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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

 
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 >
Closing the Gap: High West Energy Launches Two New EV Charging Stations 

Closing the Gap: High West Energy Launches Two New EV Charging Stations

High West Energy recognized its role in growing the rural EV charging network and looked to Tri-State for support in opening two new charging stations in their service territory. By taking advantage of funds through Tri-State's EV Infrastructure Program, High West received $45,000 for the installation of the two chargers.
Read more >
E-Bikes Help Increase Mobility for Older Adults in Cortez Colorado

E-Bikes Increase Mobility for Older Adults in Cortez

In addition to being eco-friendly, e-bikes are a fantastic option for older adults seeking enhanced mobility. E-bikes provide a gentle, assisted pedaling experience, allowing riders to cover greater distances with less effort. Whether it's running errands, visiting friends, or enjoying leisurely rides through the park, e-bikes help to maintain independence and freedom of movement for older adults. Understanding the many benefits of e-bikes, 4CORE set out to increase accessibility to older adults in the Cortez area.
Read more >
 

Study on possible Southwest Power Pool RTO expansion shows promise, informs next steps

A new 2022 Brattle study shows that expanding an SPP RTO Interconnection in the West could provide significant savings for participants.
Read more >

D.C. Circuit Court of Appeals affirms FERC’s exclusive jurisdiction over Tri-State exit charges

Ruling confirms Tri-State is subject to FERC’s rate jurisdiction, including member-developed contract termination payment tariff.
Read more >

Highline Electric Association adds potential game changer to the EV charging world

A new charging station for Highline Electric Association, financially supported by Tri-State, may be a game changer for rural areas.
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
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