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Supporting our mission through Environmental, Social and Governance practicesLearn More
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We’re reducing our carbon emissions 80% in Colorado by 2030.Learn More
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Keeping you connectedLearn More
to the ones you love -
Every transformation starts with a plan. Learn more about our responsible energy plan.Read now
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By 2024, 50% of your electricity will come from renewable sources.How we do it
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Together, we are part of something bigger…a cooperative.Learn why
More clean energy. Fewer emissions.Learn how we’re transforming with our Responsible Energy Plan.
Tri-State's mission is to provide our member systems a reliable, affordable and responsible supply of electricity in accordance with cooperative principles.
Being a cooperative is more than just our business model. It’s how we approach working together. We share knowledge, listen, collaborate and solve problems together.

The Future of EVs: Air, Water, and Land
When it comes to the future of electric vehicles, the sky’s the limit – quite literally. In addition to continued innovation in land-based electric vehicles, we are also seeing an increase in interest and investment in air and water-based options. Here’s a look at some of the most exciting developments in each EV category.

Benefits of Installing an Attic Fan for Summer
If you're considering installing an attic fan but aren't sure if it would be a good fit for your house, here are a few points to consider about attic fans, how they function, and how installing one can improve the energy efficiency of your home.

How to Prepare Your Home for a Summer Heat Wave
During summer heat waves, air conditioning can be a real lifesaver. Many homes in cooler climate states aren’t always equipped with air conditioning, so when an unexpected heat wave hits, many residents rely on other ways to stay cool without AC. No matter where you live, it’s important to be prepared for hot summer days with efficient cooling and a plan in place to stay comfortable.
45 Members
5,793 Miles of Line
More than One Million Consumers