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 40 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.
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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By the numbers
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.
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.
Inside This Year’s 2025 Annual Meeting Gifts: A Reflection of Our Members
Wildfire Mitigation at Canyons of the Ancients: Protecting Culture and Community
