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S&P Global Ratings changes Tri-State issuer rating, maintains stable outlook

S&P changes Tri-State issuer rating but maintains a stable outlook. Tri-State is focused on long-term, clean energy transition and member flexibility.
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Tri-State expands participation in CAISO Western Energy Imbalance Market

Market benefits include efficiently using the transmission system, better integrating renewable resources and dispatching the lowest cost resources.
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Winter storm has immaterial financial impact on Tri-State; S&P affirms investment grade rating and raises outlook

S&P changes Tri-State issuer rating but maintains a stable outlook. Tri-State is focused on long-term, clean energy transition and member flexibility....
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NMSU Center of Excellence, Tri-State, EPRI bring container farm to Grants campus

Partnering with NM State University to join the Electric Power Research Institute’s National Demonstration & Monitoring of Indoor Food Production.
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Southwest Power Pool expands offerings to western utilities with launch of new electricity market

Tri-State expects to lower costs and increase renewable energy integration in market with other regional power suppliers.
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Tri-State notes year anniversary, achievements of Responsible Energy Plan

Tri-State reflects achievements in 2020 and its upcoming efforts for 2021 and beyond at the one-year anniversary of its Responsible Energy Plan (REP).
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Tri-State contributes $5 million to support economic transition following Escalante Station retirement

Tri-State announces contributions of $5 million to four organizations supporting communities affected by the retirement of Escalante Station.
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Carbon Power & Light, Tri-State and WREA team up to support fire departments

The $30,000 Tri-State donation helps support six fire departments who battled the Mullen Fire in southeast Wyoming which consumed over 176,000 acres.
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Colorado Air Quality Control Commission accepts Tri-State’s voluntarily announced retirement dates for Craig Station

Tri-State CEO Duane Highley commented on the reopening of the record by Colorado Air Quality Control Commission (AQCC).
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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

©2025 Tri-State Generation and Transmission Association, Inc. Power supplier to the rural west.

  • About Us
    • Annual Report
  • Powering the Future
    • Our Energy Mix
  • Electrify and Save®
    • On-Bill Repayment
    • Programs
    • Quality Install
  • Media
    • Resources
    • Blog
    • Features
    • News
    • Newsletter
    • Podcast
  • Cooperative Benefits
  • Operations
  • Search