Z2 Crediting Project Update RTWG November 19, 2015 Chuck Jennings, PMO Charles Locke, Regulatory

Current Project Status Project Phase: Execution Status: Green Changes to requirements/scope: 5* Removed the LCI interface Addition of an interface for the Triple R file New Inbound Interface for redirects Treatment of Long Term Redirects End Dating needed for CSS data In process work: Module 2 Testing is underway Module 3 Technical Design & Development is underway Module 3 Test Planning is ongoing Business Process & SOC1 Audit Control documentation is underway What’s been completed since the last update: Module 3 Functional Design completed later than scheduled. Should not impact end date TSR Stacking is complete Completed Module 2 R2 Development

Project Issues and Risks Issue: Missing/Incorrect upgrade sponsor information SPP did not receive the necessary final upgrade costs from several sponsors by the November 1st deadline Mitigation: SPP Customer Relations is aggressively reaching out to upgrade sponsors to collect the needed data as well as working with SPP Legal and Executive Staff to secure the missing information Implications if not mitigated: Calculations could be in error and resettlements would be needed once the data is corrected Workarounds None

Project Next Steps Upcoming Activities Complete technical design and approval of Module 3 Complete testing of Module 2 Continue building business processes and audit controls Complete Module 3 Test Planning and Preparation Obtain final costs from upgrade sponsors Project Milestone Tracking (November – December) Complete Technical Design Module 3 Complete Module 3 Development Complete Module 2 SAT/SIT Complete Module 3 SAT/SIT

Z2 Communication Strategy Communication branches Ongoing updates to RTWG, Z2 PPTF, and CPTF CWG Additional updates to MOPC at each quarterly meeting SUG Updated as information becomes available Member Impacting Project Overview (MIPO) Technical Specifications for Shadow Settlement purposes

Z2 System Implementation Steps Task Name Start Finish Status Functional Design Mon 4/27/15 Wed 10/13/15   Module 1 - FD - Core, Workflow, Inbound APIs & Staging, MODULE 1 UI Tue 6/16/15 Completed Module 2 - FD - ST/LT Stacking, Gross CPO Calcs, MODULE 2 UI Fri 6/5/15 Wed 7/22/15 Module 3 - FD - Offsets, Settlement Calcs, MODULE 3 UI, Outbound APIs Wed 7/15/15 Tue 10/13/15 Completed / Late Technical Design Mon 6/1/15 Tue 10/6/15 Module 1 - TD - Core, Workflow, Inbound APIs & Staging, MODULE 1 UI Mon 7/13/15 Module 2 - TD - ST/LT Stacking, Gross CPO Calcs, MODULE 2 UI Thu 7/9/15 Wed 8/26/15 Module 3 - TD - Offsets, Settlement Calcs, MODULE 3 UI, Outbound APIs Tue 9/1/15 Tue 11/3/15  In process / Lagging** Build & Unit Test & FAT Mon 6/29/15 Tue 11/24/15 Module 1 - Build, UT/FAT - Core, Workflow, Inbound APIs & Staging, MODULE 1 UI Mon 8/10/15 Module 2 - Build, UT/FAT - ST/LT Stacking, Gross CPO Calcs, MODULE 2 UI Thu 8/13/15 Thu 10/8/15 Module 3 - Build, UT/FAT - Offsets, Settlement Calcs, MODULE 3 UI, Outbound APIs Wed 10/7/15  In Process / Lagging** Testing Tue 8/11/15 Wed 1/13/16 Installation & SAT/SIT/FIT Fri 12/18/15 Module 1 - SAT/SIT/FIT - Core, Workflow, Inbound APIs & Staging, MODULE 1 UI Tue 9/15/15 Completed  Module 2 - SAT/SIT/FIT - Stack, Gross CPO Calcs, MODULE 2 UI Fri 10/9/15 Tue 12/1/15 Module 3 - SAT/SIT/FIT - Offsets, Settlement Calcs, MODULE 3 UI, Outbound APIs Mon 11/30/15 End-to-End Test / UAT Mon 12/28/15 Unstructured Member Testing Wed 12/30/15 Tue 1/19/16 Performance Testing Tue 12/29/15 Final Installation and system prep - Credit Stacking System Fri 1/29/16 Code Freeze Production Ready System* *Note: System is ready for production processing to begin. Production processing will not begin until the MOPC has had an opportunity to review the historical amounts. Timing to complete the historical processing is yet to be determined. **Note: This delay is not expected to delay the overall project schedule.

Z2 Settlement Implementation Steps Calculation of historical period estimates for stakeholders March 2016 MOPC and working groups provide feedback on estimates April 2016 Update historical values to settlements Start Month Begin settlement of historical period amounts (1)(2) Start Month Begin settlement of monthly amounts going forward (2) Start Month Method and timing of settling historical amounts is under discussion in the Z2 Payment Plan Task Force Settlement of monthly amounts going forward and settlement of historical amounts are anticipated to start in the same month

Interest on Creditable Balances Before the Start Month, interest will be accrued on the Creditable Balances of initial sponsors only Beginning with the Start Month, interest will be accrued on the Creditable Balances of all Upgrade Sponsors This interest will increase the amount each sponsor is eligible to receive over time This interest will not increase the monthly credit payments of subsequent transmission reservations but might increase the number of future reservations that must pay credits This interest is distinct from interest that may be charged and distributed due to implementation of a payment plan

FERC Filings SPP is currently reviewing whether any FERC filings will be necessary prior to implementation due to the delay in implementing the crediting process SPP Legal/Regulatory working with FERC counsel Will follow up with the RTWG and CPTF once the review is complete

Member Action Items Provide final upgrade costs ASAP Complete Unstructured Member Testing between 12/30/15 and 1/19/16 Review session for all stakeholders planned for January New confidentiality agreements will be needed Communicate Z2 status within your respective companies

Key Takeaways Unstructured Member Testing 12/30/15 – 1/19/16 Members onsite at SPP for system validation January 2016 Members tentatively scheduled to receive historical numbers March 2016

Questions 5

Z2 Crediting Update Point of Contact Chuck Jennings, cjennings@spp.org 501.688.1616