IPC’s Energy Imbalance Market OATT Stakeholder Meeting

1. IPC’s Energy Imbalance Market OATT Stakeholder Meeting April 3, 2017

2. Agenda Comments or questions about IPC’s proposed OATT modifications or today’s presentation can be submitted by emailing them to EIM@idahopower.com through May 5, 2017.

3. Welcome and Introductions Tess Park

4. EIM Background, Benefits, and Implementation Milestones Kathy Anderson

5. Opportunity for Grid Efficiencies Western Balancing Authorities Existing Organized Markets

6. Western EIM Today • A Real-Time Market for participating Balancing Authority Areas in the West • CAISO is the non-profit market operator • Future EIM Entities include: • Balancing Authority of Northern California • Seattle City Light • Los Angeles Department of Water & Power

7. What is the western EIM?

8. What changes in resource planning and utilization? • Key change is to real time, intra-hour scheduling and dispatches • Additional software and process changes to support real-time operations

9. Why join the EIM? EIM is good for Reliability, Customers & Renewables

10. Are there financial benefits? • Energy and Environmental Economics (E3) conducted a study showing financial benefits to Idaho Power’s EIM participation • The study showed modest positive annual savings • $4.1-5.1M gross benefits • Approx $15M start-up costs • IPUC approved accounting treatment that will allow Idaho Power to defer the costs of joining until benefits are received.

11. How does the EIM work?

12. Continual Information Exchange Market Participants T-75: Base schedules and energy bids due T-40: Final opportunity to submit base schedules T-55: Updated base schedules submitted T-20: E-tagging deadline 15-minute dispatch intervals (4.5 hour look-ahead) T X:30 X:45 X:15 Y:00 X:00 5-minute dispatch intervals (65-minute look-ahead) T-22.5: 15-minute scheduled awards published T-37.5: Start of Market 1 optimization Market Operator T-45: Results of sufficiency test published T-60: Results of sufficiency test published Resource sufficiency tests:Balanced load and generation?Free of congestion?Sufficient ramping capability? (T = start of the hour)

13. Project Overview and Timeline • IPC will join the EIM on April 4, 2018

14. What does this mean to you?

15. Key OATT Provisions, Stakeholder Process, Next Steps, and Additional Resources Julia Hilton

16. Tariff Revisions • Most of IPC’s OATT provisions will not change. There will be changes in the following areas: • Timing and content of forecasting and data requirements • Price at which imbalance and losses are settled • Most changes will be located in the new Attachment O to IPC’s OATT. Other notable changes are located in: • Part I: Definitions • Schedule 1A: EIM Administrative Service • Schedules 4, 4A, 10, 10A: Imbalance Services • Schedule 12: Real Power Losses

17. Defining Key Terms

18. Participating Resource Eligibility

19. Scheduling and Forecasting

20. Forecast and Schedule Timing

21. Pricing Proxy for EIS and GIS OATT Schedules 4 (Energy Imbalance) & 10 (Generator Imbalance) Schedule 4 applies to load, Schedule 10 applies to non-participating resources.

22. Real Power Losses

23. Settlement Statements Western EIM pricing reflects competitive, real-time energy market costs

24. Stakeholder Process Timeline Please submit questions to EIM@idahopower.com

25. EIM Information on OASIS

26. Additional EIM Resources • CAISO site for EIM participation • http://www.caiso.com/participate/Pages/EnergyImbalanceMarket/Default.aspx • CAISO EIM Computer-based training (CBT) • http://www.caiso.com/participate/Pages/Training/default.aspx • Introduction to the EIM • How the EIM works • EIM Business Practice Manuals • https://bpmcm.caiso.com/Pages/BPMLibrary.aspx • Includes readiness criteria