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Escalante Station

Escalante Station

Escalante Station is a 250 MW coal-fired steam electric generating facility that started commercial operation in 1984 in McKinley County, NM. In July 2000, Plains Electric (owner and operator of Escalante Station) and Tri-State merged. In August 2020, the facility burned the last of its coal supply and shut down power generating operations.

2015 Fugitive Dust Control Plan

2024 Fugitive Dust Control Plan Report

2023 Fugitive Dust Control Plan Report

2022 Fugitive Dust Control Plan Report

2021 Fugitive Dust Control Plan Report

2020 Fugitive Dust Control Plan Report

2019 Fugitive Dust Control Plan Report

2018 Fugitive Dust Control Plan Report

2017 Fugitive Dust Control Plan Report

2016 Fugitive Dust Control Plan Report

Run-On and Run-Off Control System Plan

Periodic Update of Run-On and Run-Off Control System Plan

Closure Plan

Post-Closure Plan

2024 Annual Inspection Report

2023 Annual Inspection Report

2022 Annual Inspection Report

2021 Annual Inspection Report

2020 Annual Inspection Report

2019 Annual Inspection Report

2018 Annual Inspection Report

2017 Annual Inspection Report

2016 Annual Inspection Report

2015 Annual Inspection Report

Groundwater Monitoring System Certification

Statistical Method Selection Certification

Statistical Method Selection Certification Update

2024 Annual Groundwater Monitoring Report

2023 Annual Groundwater Monitoring Report

2022 Annual Groundwater Monitoring Report

2021 Annual Groundwater Monitoring Report

2020 Annual Groundwater Monitoring Report

2019 Annual Groundwater Monitoring Report

2018 Annual Groundwater Monitoring Report

2017 Annual Groundwater Monitoring Report

Unstable Area Demonstration

Nucla Station

Nucla Station

Nucla Station was a 110 MW coal fired steam electrical power generation facility that began commercial operation in 1959 in Montrose County, Colorado. In 1987 the facility was retrofitted with circulating atmospheric fluidized bed combustion equipment to improve plant efficiency, and the Station was acquired by Tri-State Generation and Transmission in 1992. The CCR unit for this facility is an off-site landfill, Nucla Ash Disposal Site. Nucla Station was retired in September 2019. Demolition of the facility began in 2020 and was completed in 2022.

2015 Fugitive Dust Control Plan

2024 Fugitive Dust Control Plan Report

2023 Fugitive Dust Control Plan Report

2022 Fugitive Dust Control Plan Report

2021 Fugitive Dust Control Plan Report

2020 Fugitive Dust Control Plan Report

2019 Fugitive Dust Control Plan Report

2018 Fugitive Dust Control Plan Report

2017 Fugitive Dust Control Plan Report

2016 Fugitive Dust Control Plan Report

Run-On and Run-Off Control System Plan

Periodic Update of Run-On and Run-Off Control System Plan

Notification of Intent to Close the CCR Landfill

Notification of Final Closure Completion

Notification of Recording of Notice of Obligation in Lieu of CCR Deed Notation

Closure Plan Update

Closure Plan

Post-Closure Plan

2024 Annual Inspection Report

2023 Annual Inspection Report

2022 Annual Inspection Report

2021 Annual Inspection Report

2020 Annual Inspection Report

2019 Annual Inspection Report

2018 Annual Inspection Report

2017 Annual Inspection Report

2016 Annual Inspection Report

2015 Annual Inspection Report

2019 Groundwater Monitoring System Certification

2017 Groundwater Monitoring System Certification

Statistical Method Selection Certification

Statistical Method Selection Certification Update

2024 Annual Groundwater Monitoring Report

2023 Annual Groundwater Monitoring Report

2022 Annual Groundwater Monitoring Report

2021 Annual Groundwater Monitoring Report

2020 Annual Groundwater Monitoring Report

2019 Annual Groundwater Monitoring Report

2018 Annual Groundwater Monitoring Report

2017 Annual Groundwater Monitoring Report

Unstable Area Demonstration

Craig Station

Craig Station

Current CCR handling operations at the Craig Generating Station do not include the use of any CCR units and do not require publication of reports on a publicly-available website.

Contact Us

For more information or if you have questions please contact us at corporate_communications@tristategt.org.

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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