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.
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
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.
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.
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.
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.
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.