NITS on OASIS Transmission Customer Perspective 2016 WECC Schedulers Meeting

Tri-State G&T & NITS Impact Wholesale Power for 44 Member Rural Electric Cooperatives 1.5M Members ~2800MW Peaking load Across Five States Wind, Hydro, Solar, Gas and Coal Portfolio Owned, Joint Owned and PPAs Over 4300 MW 7 Network Transmission Providers 3 non-jurisdictional/4 jurisdictional Excludes Full Requirements Load in SPP

Road to NITS on OASIS FERC Order 890 Transmission Providers (TP) Formalizes Designation and Undesignation Process Pro forma tariff Section 30 Network Resources Section 31 Network Load Transmission Providers (TP) Develop Business Practices and Manual Processes FERC Order 676H NAESB WEQ Version 3 Standards Mandatory NITS on OASIS Software Platform

FERC Order 890 (including clarifications 890 A thru D) Remedy Undue Discrimination - pro Forma Tariff Qualifications as a Designated Network Resource (DNR) Rules for Termination Third Party sales Off System vs On System Reserves Hazard/Backup Power Direction to NAESB Develop Standards for NITS transactions on OASIS Intent - Visibility Prevent Overdesignation of DNRs Prevent Oversubscription of Transmission Service

Order 676-H Reflect Policy Determinations in FERC Order 890 series NAESB Wholesale Electric Quadrant (WEQ) Version 3 Standards for Business Practices and Communication Protocols Mandatory Enforceable Requirements

NAESB WEQ Standards –NITS on OASIS Process Description Disaggregation and Aggregation of Loads Timing Requirements WEQ-002 Template data WEQ-003 Definitions of Data Elements WEQ-013 Definitions around Statuses and Workflow

Initial Timeline September 2014 July 2015 – Notice of Plan from TPs WEQ Standards revised-Order 676H 18 month implementation –April 2016 July 2015 – Notice of Plan from TPs September 2015 – OATI Conference November 2015 – TPs First Glimpse January 2016 TPs Business Practice updates TPs require template data February 2016 – TP Training at OATI Late February 2016 – TPs File for Extension March 17, 2016 – Extension Granted

New Timeline – 3/17/2016 Extension Notice June 24, 2016 Compliance Filing date Posting and Documenting of NITS Arrangements July 25, 2016 Full compliance Implementation

NITS on OASIS - Software Updates to webTrans Updates to E tag 1.8.2 SmartOASIS – Transactions>NITS Request Summary or Application Summary

SmartOASIS – NITS Setup Application Starting Source for all Components Attestation Customer Agent - Optional

SmartOASIS – NITS Setup Select TP and Application Ref Select from drop down or click asterisk Load Load Area POR Sink, Load voltage and substation optional Forecast Method Ancillary Services By POD By Service Type

SmartOASIS – NITS Setup Select TP and Application Ref Generators Unit characteristic data Eligible MW Resources PPAs & Owned Generation Ability to Group Gen Forecasted MW Designated Network Resource Resource/POR combo Designated MW Attestation

Smart OASIS – NITS Ongoing Terminating DNRs Temporary and Indefinite Select TP, Application Ref and DNR MW Entries are Negative Modifications/Additions Load, Generators, Ancillaries, Resources, DNRs Procuring 6-NN (Secondary Network transmission)

SmartOASIS – NITS Optional* Load Forecast Data – Seasonal Generation Dispatch – Economics Resource Forecast – Seasonal Auxiliary Transmission – Coordinated Request Scheduling Rights – Access from DNR *Optionality is determined by TP

Smart OASIS – NITS Setup Tips Avoid Special Characters and Spaces Time Out Issues in Google Chrome Status of: Queued with Preconfirmed not Checked OR PreSubmittal Edit Icon available in Upper Right Status of Deficient or PreSubmittal Right Click in Grey Area – Check Box for Optional displays

SmartOASIS – NITS Reported Issues/ Bugs Termination display - Lacking 24 hour profile button Network Secondary – Lacking 24 hour profile button No link between ATC and Network Secondary Unable to Change POR on DNR Time Zone issues in multiple displays POR duplication of DNR entries WebTrans – Scheduling Rights

SmartOASIS – NITS Training OATI -Webinars for Network Customers OATI - Recorded Versions Available at: SmartOASIS>Help (?)> Transactions>NITS CAUTION: Tells you how the software works but NOT what your TP expectations are

Next Steps – TP Business Practice Requirements and Guidance on NITS Entry Optional Functionality – Inclusion/Exclusion 10 Year L&R Scheduling Rights E tag 1.8.2 NITS Resource Field and NITS MISC Field

Next steps – Templates & Production Entry Template Submission to TPs Upon Request Upon Revision Production Entry Who Network Customer or TP How Manual Entry CSV file load issue When Prior to June 24, 2016

Where are we? (Tri-State) Original Templates sent to all 7 TP prior to January deadline Production entry of base data with 2 TPs 1 Pursuing scheduling right option Remaining 5 TPs Completing Template Review and Revision by end of May/early June Requesting Entry Instructions – when/where Planning on line Temporary Terminations per deadline and/or TP directions

Key Concerns/Questions 10 Year Load & Resource Submittals Scheduling Rights Usability/Feasibility of Termination Usability/Feasibility of Network Secondary E tag 1.8.2 fields Alarms/Checks by TPs – Tag vs NITS

Questions?

Contact Information Carman Ruder Power Scheduler II Tri-State Generation and Transmission Association, Inc. 303-254-3372 cruder@tristategt.org Lisa Tiffin Backcasting and Topology Manager 303-254-3865 ltiffin@tristategt.org