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    Integrated Resource Planning

    Planning is integral to everything we do at Avista, and it is especially important in determining how to meet the future energy needs of our customers. Central to this effort is a process called the Integrated Resource Plan, or IRP. You can think of the IRP as a roadmap for how we will meet the energy needs of our electric and natural gas customers 20 years into the future.

    Having a diverse energy mix is the foundation of Avista's ability to provide our customers with clean, reliable power at fair, reasonable rates. Our diversified energy portfolio ensures we have a stable supply of power around the clock, every day of the year, today and into the future.

    As a regulated utility, Avista files an electric IRP in odd years with the public utility commissions in Washington and Idaho. In even years, we file a natural gas IRP with the public utility commissions in Washington, Idaho, and Oregon. 

    An important part of both the electric and natural gas IRP process is public involvement. Two key opportunities for public involvement are through the Technical Advisory Committee, or TAC, and the public comment period.

    The TAC is a committee of stakeholders who meet to review specific technical issues and aspects of the IRP. During this approximately 18-month process, the electric IRP TAC and the natural gas TAC each meet several times in Spokane. To encourage participation in the TACs by a diverse group of representatives, participation is available via webinar or conference call. Currently, all meetings will be online until COVID-19 restrictions are completely lifted and we are able to have visitors back in the office.

    When the respective IRPs have been drafted, the Washington Utilities and Transportation Commission, Idaho Public Utilities Commission, and Public Utility Commission of Oregon will each hold open comment periods when the public is invited to review the plan and provide comments to the respective agencies.

    Avista hosted a public meeting on Wednesday, February 24, 2021 to review both the electric and natural gas IRPs. You can view the presentation or view the recorded event. See questions and answers from the event. The public meetings for the 2023 IRP are expected to occur in early 2023. More details will be posted here as the meetings are scheduled.

    Electric IRP

    2023 Electric IRP

    Avista began developing the 2023 IRP in late 2021. If you are interested in joining the TAC and participating in the development of the IRP, please email John Lyons or contact him at (509) 495-8515. You can also contact him with questions about previous IRPs, the TAC process or the Work Plan.

    Major Milestone
    Date
    Documents
    TAC 1
    December 8, 2021
    View TAC 1 Agenda (PDF)
    View TAC 1 presentation (PDF)
    View TAC 1 meeting notes (PDF)
    TAC 2
    February 8, 2022
    View TAC 2 agenda (PDF)
    View TAC 2 presentation (PDF)
    View recorded TAC 2 meeting
    View TAC 2 meeting notes (PDF)
    TAC 3
    Wednesday, March 9, 2022

    View TAC 3 Agenda (PDF)
    View TAC 3 presentation (PDF)
    View recorded TAC 3 meeting part 1 and part 2
    View TAC 3 meeting notes (PDF)

    TAC 4
    August 10, 2022
    View TAC 4 Agenda (PDF)
    TAC 5
    September 7, 2022
     
    TAC 6
    September 28, 2022
     
    TAC 7
    October 12, 2022
     
    Technical Modeling Workshop
    October 20, 2022
     
    Progress Report Workshop
    December 14, 2022
     
    TAC 8
    February 16, 2023
     
    Public Meeting
    March 8, 2023
     
    TAC 9
    March 22, 2023
     

    2023 IRP Documents

    • Work Plan for Avista's 2023 Electric IRP (PDF)
    • Avista Supply Side NEI Report (PDF)
    • Load Forecast (XLS)

    2021 Electric IRP

    • Electric Integrated Resource Plan (PDF)
    • Avista Electric 2021 IRP PRS Update and CEAP Update (PDF)
    • 2021 Electric IRP TAC Update Meeting Notes, May 18, 2021 (PDF)
    • Appendix A - TAC Presentations and Meeting Notes (PDF)
    • Appendix B - 2021 IRP Work Plan (PDF)
    • Appendix C - Public Participation Comments (PDF)
    • Appendix D - Unavailable Confidential Historical Generation Operation Data (PDF)
    • Appendix E - AEG Conservation and Demand Response Potential Assessment (PDF)
    • Appendix F - Avoided Cost Calculations (PDF and XLS)
    • Appendix F Update (PDF)
    • Appendix G - Transmission 10-Year Plan and 2019-2020 Avista System Assessment (PDF)
    • Appendix H - New Resource Table for Transmission (PDF)
    • Appendix I - Publicly Available Inputs and Models (PDF)
    • Appendix J - Confidential Inputs and Models (PDF)
    • Appendix K - Load Forecast Supplement (PDF)

    2021 IRP Input Assumptions (Appendix I)

    • Avista Resource Emissions Summary (Excel spreadsheet)
    • Load Forecast (Excel spreadsheet)
    • CPA Measures (Excel spreadsheet)
    • Avista 2020 Electric CPA - Summary and IRP Inputs (Excel spreadsheet)
    • Home Electrification Conversions (Excel spreadsheet)
    • Named Populations (Excel spreadsheet)
    • Natural Gas Prices (Excel spreadsheet)
    • Social Cost of Carbon (Excel spreadsheet)
    • High and low natural gas prices (Excel spreadsheet)
    • Market modeling results (Excel spreadsheet)
    • Climate shift scenario inputs (Excel spreadsheet)
    • 2021 IRP New Resource Options - February 1, 2021 (Excel spreadsheet)

    Portfolio Models

    • Baseline 1 (Excel spreadsheet)
    • Baseline 1 Update (Excel spreadsheet)
    • Preferred Resource Strategy (Excel spreadsheet)
    • Baseline 2 (Excel spreadsheet)
    • Baseline 2 Update (Excel spreadsheet)
    • Baseline 3 (Excel spreadsheet)
    • Baseline 3 Update (Excel spreadsheet)
    • Clean Resource Plan (2027) (Excel spreadsheet)
    • Clean Resource Plan (2045) (Excel spreadsheet)
    • SCC Idaho (Excel spreadsheet)
    • Low load forecast (Excel spreadsheet)
    • High load forecast (Excel spreadsheet)
    • RA Program (Excel spreadsheet)
    • Electrification 1 (Excel spreadsheet)
    • Electrification 2 (Excel spreadsheet)
    • Electrification 3 (Excel spreadsheet)
    • 2x SCC (Excel spreadsheet)
    • Colstrip Exit 2025 (Excel spreadsheet)
    • Colstrip Exit 2035 (Excel spreadsheet)
    • Colstrip Exit 2045 (Excel spreadsheet)
    • Clean Energy Delivery by Hr. (Excel spreadsheet)
    • SCC on Net P/S (Excel spreadsheet)
    • Use Avg Mrkt for EE SCC (Excel spreadsheet
    • PRiSM Draft Results (Excel spreadsheet)


    Archive of Electric IRP Documents

    2020 IRP

    • Electric Integrated Resource Plan (PDF)
    • 2020 IRP Appendices (PDF)
    • Appendix E - Measure List (Excel spreadsheet)
    • Appendix H - Supply Side Resource Options (Excel spreadsheet)

    2017 Integrated Resource Plan

    • Electric Integrated Resource Plan (PDF) 
    • 2017 Electric IRP Appendices (PDF)

    2015 Integrated Resource Plan

    • 2015 Electric Integrated Resource Plan (PDF) 
    • 2015 Electric IRP Appendix A - TAC Presentations (PDF)
    • 2015 Electric IRP Appendix B - Work Plan (PDF)
    • 2015 Electric IRP Appendix C - AEG Studies (PDF)
    • 2015 Electric IRP Appendix D - Avista Generation Energy Efficiency Studies (PDF)
    • 2015 Electric IRP Appendix E - Transmission Studies (PDF)

    2013 Integrated Resource Plan

    • 2013 Electric Integrated Resource Plan (PDF)
    • 2013 Electric Integrated Resource Plan Appendices (PDF)

    2011 Integrated Resource Plan

    • 2011 IRP Document (PDF)
    • 2011 IRP Appendix (PDF)

    2009 Integrated Resource Plan

    • 2009 IRP Document (PDF)
    • 2009 IRP Appendix (PDF)
    • 2009 IRP Appendix Table of Contents (PDF)

    2007 Integrated Resource Plan

    • 2007 IRP Document (PDF)
    • 2007 IRP Appendix (PDF)
    • 2007 Wind Integration Study Report (PDF)

    2005 Integrated Resource Plan

    • 2005 IRP Document (PDF)
    • 2005 IRP Appendices 1 (PDF)
    • 2005 IRP Appendices 2 (PDF)

    2003 Integrated Resource Plan

    • 2003 IRP Document (PDF)
    • 2003 IRP Appendices.pdf (PDF)

    2001 Integrated Resource Plan

    • 2001 IRP Document (PDF)

    1997 Integrated Resource Plan

    • 1997 IRP Document (PDF)
    • 1997 IRP Appendices.pdf (PDF)

    1995 Integrated Resource Plan

    • 1995 IRP Document (PDF)
    • 1995 IRP Appendices (PDF)

    1993 Integrated Resource Plan

    • 1993 IRP Document (PDF)
    • 1993 IRP Appendices (PDF)

    1991 Integrated Resource Plan

    • 1991 IRP Document (PDF)

    1989 Integrated Resource Plan

    • 1989 IRP Document (PDF)

    Direct questions to James Gall, Avista's Electric IRP Manager.

    Natural Gas IRP

    The 2021 natural gas IRP was filed on April 1, 2021. If you or your organization would like to participate in the process for the 2023 IRP, or be included in our Technical Advisory Committee mailing list, please email Tom Pardee or contact him by phone at (509) 495-2159.

    2023 Natural Gas IRP

    Major Milestone
    Date
    Documents
     TAC 1
    Wednesday, February 16, 2022
    View TAC 1 agenda (PDF)
    View TAC 1 presentation (PDF)
    View recorded meeting
    TAC 2
    Tuesday, May 3, 2022 View TAC 2 presentation (PDF)
    TAC 3
    Wednesday, August 10, 2022
    12:30pm – 4pm
    Join meeting
    Or call in (audio only)
    +1 509-931-1514
    Phone Conference ID: 184 108 690#
    View agenda (PDF)
    TAC 4
    Tuesday, August 23, 2022
     
    TAC 5
    Tuesday, October 25, 2022
     

    2021 Natural Gas IRP

    • 2021 Avista Natural Gas IRP (PDF)
    • 2021 Avista Natural Gas IRP Appendices (PDF


    Archive of Natural Gas IRP Documents

    2018 Natural Gas IRP

    • Work Plan for Avista's 2018 Natural Gas IRP (PDF)
    • TAC 1: Thursday, January 25, 2018 (PDF)
    • TAC 2: Thursday, February 22, 2018 (PDF): Weather analysis, supply-side resources overview, overview of the major interstate pipelines, and the procurement plan.
    • TAC 3: Thursday, March 29, 2018 (PDF): Distribution, environmental policies, market dynamics, price forecasts, cost of carbon, and initial modeling results.
    • TAC 4: Thursday, May 10, 2018 (PDF): DSM results, stochastic modeling and supply-side options, final portfolio results, and 2020 Action Items.

    2018 Natural Gas IRP

    • 2018 Natural Gas IRP (PDF)
    • 2018 Natural Gas IRP Appendices (PDF)

    2016 Natural Gas IRP

    • 2016 Natural Gas IRP (PDF)
    • 2016 Natural Gas IRP Appendices (PDF)

    2014 Natural Gas IRP

    • 2014 Natural Gas IRP (PDF)
    • 2014 Natural Gas IRP Appendices (PDF)

    2012 Natural Gas IRP

    • 2012 Natural Gas IRP (PDF)
    • 2012 Natural Gas IRP Appendices (PDF)

    2009 Natural Gas IRP

    • 2009 IRP Document (PDF)
    • 2009 IRP Appendix (PDF)

    2007 Natural Gas IRP

    • 2007 IRP Document (PDF)
    • 2007 IRP Appendix (PDF)

    2006 Natural Gas IRP

    • 2006 IRP Document (PDF)
    • 2006 IRP Appendix (PDF)

    If you have questions about these plans, please contact Tom Pardee by email or at (509) 495-2159.

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