NorthWestern Energy Group, Inc. · NASDAQ:NWE

NorthWestern Energy — Technical Presentation (July 2017)

15 slides from NorthWestern Energy's technical presentation, Jul 19, 2017

  1. Slide 1: Hydro Upgrades Analysis

    Hydro Upgrades Analysis Rehabilitation & Development Performance Validation & Project Prioritization

  2. Slide 2: Hydroelectric System Scope of Capacity Expansion Potential

    Hydroelectric System Scope of Capacity Expansion Potential Scope of Project was to Refine Capacity Increase and Cost Estimates for the Hydro Upgrades detailed in the Electricity Supply Resource Procurement Plan dated March 2016

  3. Slide 3: NWE Resource Plan - Hydro Summary

    NWE Resource Plan - Hydro Summary • 11 Facilities • 37 Units • 442 MWs • High Capacity Factors

  4. Slide 4: Hydro Upgrade Potential

    Hydro Upgrade Potential NorthWestern Energy Delivering o Bright Future Volume 1, Chapter 9 — New Resources Table 9-4 Hydroelectric Capacity Expansion Potential HDR Project Performance Evaluation Report Hydroelectric Capacity Expansion Potential Hydroelectric Capacity Expansion Potential Sievelonmare

  5. Slide 5: Optimized Hydro Upgrade Potential

    Optimized Hydro Upgrade Potential

  6. Slide 6: Next Steps

    Next Steps • Evaluate and Prioritize Projects – Financial Models including energy value, depreciation, taxes, etc. • Considerations – Cost vs. Benefit in MWs or MWhrs? o Energy difference of e.g. 5 MW at Morony vs. 5 MW at Cochrane – Condition of Existing Units? o Age, maintenance needs, & performan

  7. Slide 7: Draft Potential Prioritized 10-Year Implementation

    DRAFT Potential Prioritized 10-Year Implementation

  8. Slide 8: Ryan Turbine Upgrades Economic Summary

    Ryan Turbine Upgrades Economic Summary Step 1 – Propose Unit for Upgrade Step 2 – Preliminary Models and Seek Budget Approval for the Upgrade Step 3 - Develop RFP and receive proposals from Vendors Step 4 – Use vendor performance curves to establish new output for each unit in CHEOPS model

  9. Slide 9: Ryan Turbine Upgrades Economic Summary

    Ryan Turbine Upgrades Economic Summary Step 5 – Use energy numbers to run financial model – 24 page spreadsheet Model Produces Levelized Rate per MWHr

  10. Slide 10: Ryan Turbine Unit Upgrade: Economic Study

    Ryan Turbine Unit 3 Upgrade: Economic Study Step 6 – Provide energy and financial information to Energy Supply Planning for further analysis At the time the Ryan Unit 3 turbine upgrade was being considered, August, 2016, Energy Supply Planning used PowerSimm to evaluate what NWE would be willing to

  11. Slide 11: Ryan Turbine Upgrades

    Ryan Turbine Upgrades Step 7 – Make recommendation to Capital Committee and Board Step 8 (if project is approved): • Issue contract • File Generation Interconnection Application (GIA) for additional MW’s onto transmission system (if not already completed) • File FERC License Amendment Application fo

  12. Slide 12: Step 9 – Finally get to Install New Unit!

    Step 9 – Finally get to Install New Unit!

  13. Slide 13: Hauser Unit 2 Evaluation Underway

    Hauser Unit 2 Evaluation Underway Send these scenarios to finance for analysis to determine an evaluated cost per MWhr to determine which projects make most sense economically for the company

  14. Slide 14: Hauser Unit 1 Installed in 2016

    Hauser Unit 1 Installed in 2016 Out goes the Old In goes the New!

  15. Slide 15: Questions?

    Questions? NorthWestern Energy Delivering @ Bright Future

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