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
Lorem ipsum dolor sit amet consectetur, adipisicing elit. Maxime doloremque mollitia ut debitis illum suscipit sapiente amet, ex eveniet eaque natus eos vero necessitatibus voluptas neque quos. Consequuntur libero magni architecto error, nulla atque! Necessitatibus ea minima, mollitia voluptates nam, sit accusantium saepe, atque facilis fugit quam vero repellat! Vero.
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.
Warm Weather Tools to Get Your Yard Summer Ready
There’s nothing like relaxing outside and soaking up the fresh air, but sometimes our yards need a little work before we can fully enjoy them. Don’t sweat it, with the help of a few tools you’ll have your yard summer-ready in no time.
Energy Saving Maintenance Checklist for Small Businesses
Even if you don’t own a small business, you likely know someone who does. They’re the lifeblood of our rural communities, from the neighborhood barber to the downtown coffee shop. Whether you’re the owner or a loyal patron, running a business is a lot of work. Small business owners do it all, and that often includes maintenance that can help reduce energy costs. Our Energy Saving Maintenance Checklist for Small Businesses is a good place to start if you're working on your list of to-dos.
Walther Farms Combines Hard Work and Smart Choices
Not all spuds are created equal. In fact, more than 1,000 varieties of potatoes are grown across the globe but there’s only one type suitable for potato chip production. Tri-State caught up with the crew at Walther Farms in Lisco Nebraska, a third-generation, family-owned chipping potato business operating in eight states.
Members, Tri-State file joint request for rehearing of settlement advancing flexible power contracts
Approval of settlement would clear path for flexible contract options for Tri-State's utility members.