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    Supporting our mission through Environmental, Social and Governance practices
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    We’re reducing our carbon emissions 80% in Colorado by 2030.
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    Keeping you connected
    to the ones you love
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    Every transformation starts with a plan. Learn more about our responsible energy plan.
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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.

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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.

Our culture

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.
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Co-op provisions in Inflation Reduction Act of 2022 advance Tri-State Responsible Energy Plan

Tri-State notes IRA strengthen cooperatives’ ability to invest in renewable energy, storage and transmission, in support rural communities.
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Tri-State Announces Pricing Terms of Its Cash Tender Offers for Certain Outstanding Debt Securities

Pricing terms noted on previously announced cash tender offers.
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Rocky Mountain Biological Lab Make Research Easier to Access with eBikes

GCEA and Rocky Mountain Biological Lab Make Research Easier to Access with eBikes

About four miles north of Mount Crested Butte, Colorado, down a winding dirt road lies what was once the mining town named Gothic. The idea of making it easier for residents to get to their field sites prompted RMBL's Admin Manager Katie Harper to investigate electric bikes.
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Highline Electric Makes Big Move for Rural EV Charging

Closing the Gap: Highline Electric Makes Big Move for Rural EV Charging

HEA and FreeWire have set up their latest charging technology at the Wagon Wheel Conoco just off the heavily traveled U.S. Interstate 76 near Julesburg, Colorado.
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Energy Saving Tips While You're Away on Vacation

Energy Saving Tips While You're Away on Vacation

There’s already a lot of prep work that goes into taking a trip. Between planning, finding a pet sitter and catching a flight on time, you don’t need more complications. So, keep it simple with these five easy steps before heading out the door.
Matt Fitzgibbon, Beneficial Electrification Manager
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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

©2022 Tri-State Generation and Transmission Association, Inc. Power supplier to the rural west.

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