Western Planning Regions Discussion Needs/Expectations Relative to TEPPC TEPPC Review Task Force Meeting January 11, /8/20161

Western Planning Regions (“WPR”): Legal Obligations Established and well defined Order 1000 regional processes Transparent and comparable With healthy regional stakeholder input Regional processes used to coordinate planning data and information with Planning Regions Interregional transmission solutions considered through interregional coordination Annual interregional stakeholder meetings and provisions for interregional transmission proposals 1/8/20162

Regional Objectives: WPR and TEPPC Drivers WPR: planning to meet Regional and Interregional FERC 890 and 1000 transmission planning requirements TEPPC: informs WECC management and WECC stakeholders Study area WPR: WECC region; planning regions TEPPC: WECC region 1/8/20163

Regional Objectives: WPR and TEPPC Basic study data needs determined WPR through regional processes TEPPC through WECC processes TEPPC scenario analysis WPR: planning regions not considered based on TEPPC scenario need TEPPC: WECC stakeholder input drives scenario definition 1/8/20164

Regional Objectives: WPR and TEPPC TEPPC scenario results WPR: may have a broader different view/objectives than WPR needs; generally not used TEPPC: information used by other stakeholders Models used WPR and TEPPC: Production Cost Model ("PCM") and Power Flow ("PF") Current situational relationship WPR: TEPPC (and WECC) data user; transmission provider/owner involvement in TEPPC (and WECC) activities TEPPC: WECC data user/provider WPR & TEPPC: a stakeholder in each other’s process 1/8/20165

WPR Short-Term Needs: Oriented Around Data 2026 Common Case completed by March 31, 2016 The assumptions in the common case are acceptable to WPR or require minimum effort to modify for WPR studies Round trip process (PF-PCM-PF) functional and complete by March 31, 2016 Power flow dynamic data complete by WECC and functional no later than June 30, 2016 In the long-term a data management system for common PCM and PF data 1/8/20166

WPR Long-Term Needs: Oriented Around Data and Shared Value TEPPC (and WECC) PCM data set (and PF base case) development process and procedures WPR will coordinate their base case needs WECC provide some level of deference to these needs TEPPC studies/results must be relevant to WPR before they can be considered in WPR regional processes TEPPC studies/results must be based on PCM data sets that reflect WPR ten-year plans For TEPPC studies/results to be considered TEPPC must submit their information into the relevant regional planning processes 1/8/20167

WPR Long-Term Needs: Oriented Around Data and Shared Value Improve data coordination so WPR can continue to rely on PCM data TEPPC PCM data reflect planning region’s ten-year transmission plans TEPPC develops using current method/processes and produces change files WPR provide appropriate assumptions Non-WPR related projects/sensitivities/scenarios should be reflected by TEPPC in separate PCM data sets Development justified on the merits of the proposal Restructure RPCG under WPR to manage With WECC support Migrating WECC to a data management system (e.g., a BCCS like process) for PCM data set and PF base case development 1/8/20168

Questions? 1/8/20169