Transmission Planning at the California ISO September 10, 2015.

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Presentation transcript:

Transmission Planning at the California ISO September 10, 2015

ISO’s annual transmission planning process relies on state policy and state agency input and aligns assumptions Page 2 March 2016 April 2015 January 2015 State and federal policy CEC - Demand forecasts CPUC - Resource forecasts and common assumptions with procurement processes Other issues or concerns Phase 1 – Develop detailed study plan Phase 2 - Sequential technical studies Reliability analysis Renewable (policy- driven) analysis Economic analysis Publish comprehensive transmission plan with recommended projects ISO Board approves transmission plan Phase 3 Procurement

Transmission planning is coordinated with state processes: Create demand forecast & assess resource needs CEC & CPUC Creates transmission plan CAISO Creates procurement plan CPUC IOUs Final plan authorizes procurement Results feed into next biennial cycle

ISO transmission approvals over last 5 years – over 30 projects/yr until pace slowed in Slide 4 Transmission Plan Capital Cost in $ millions Delaney-Colorado River and Harry Allen-Eldorado

First cycle of CAISO’s biennial FERC Order 1000 interregional planning process begins 2016 Page 5 Four planning regions coordinate evaluation, selection, and allocation of costs of proposed interregional transmission projects (CAISO, Columbia Grid, Northern Tier, and West Connect) Phase 1 Development of ISO unified planning assumptions and study plan Phase 3 Receive proposals to build identified policy and economic transmission projects Mar 2016 Mar 2017 Project Submissions Due Mar 31 Conduct Screening Process Preliminary Assessment Interregional Coordination Stakeholder Meeting Dec 2015 Oct 2017 Jan 2016 Stakeholder Meeting 1 Mar Stakeholder Meeting 2 Sept Stakeholder Meeting 3 Nov Phase 2 Technical Studies and Board Approval Study Plan Addendum Jan 2017 Inform other Relevant Regions and Stop Assessment Move to the next planning cycle Stakeholder Meeting 4 Feb Viable?

The CAISO transmission planning process is well- positioned to play a key role in RETI 2.0 Past coordination on renewable generation development has been effective in identifying transmission needs for 33% RPS Further coordination is in place for load forecasting and forecasting of preferred resources Alignment has evolved and improved between the CAISO, CPUC and CEC processes Page 6