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NWPCC Planning Coordination Committee Report: PSA Status and Future Energy Resource Planning

This report presented to Wally Gibson at the NWPCC Planning Coordination Committee in Spokane, WA, on June 26-27, 2008, outlines the current status of the Power Supply Assessment (PSA) process and future work related to resource adequacy. Key updates include plans for revising calculations, addressing temperature issues, and managing unpredictable plant retirements. The report also highlights the emphasis on renewable energy integration and the need for collaborative efforts in responding to NERC's requests for more resource data, as well as continuing to refine energy constraint analyses.

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NWPCC Planning Coordination Committee Report: PSA Status and Future Energy Resource Planning

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  1. LRS Report to PCC Wally Gibson, NWPCC Planning Coordination Committee Spokane, WA June 26-27, 2008

  2. PSA Status - 1 • Will post draft for earlier review this year • Generally same approach as last year • Keeping same building block but updating calculations • Contingency reserves • Regulating reserves • Additional forced outage reserves • Reserve for 1-in-10 weather driven load • Addressing additional temperature issues with scenarios • Unpredictable plant retirements (California cooling water) • Goal: Phase out once-through cooling, ~20,000 MW • Implementation schedule, details, effects unknown • Narrative on magnitude and issues, no full scenario

  3. PSA Status - 2 • Breaking out planned resource classes further • 2007 PSA: • Class 1: Under construction, in service Jan 2011 • Class 2: Active regulatory review, in service by Jan 2013 • 2008 PSA • Class 1: Under construction, in service Jan 2012 • Class 2: All permits approved and interconnection agreements signed and in service Jan 2014 -- small class • Class 3: Under regulatory review and facility study done with active negotiation of interconnection agreement and in service Jan 2014

  4. NERC Adequacy Reports • Long-Term Reliability Assessment (LTRA) • NERC asking for more detail on status of future resources, demand side and energy efficiency programs • Additional data requests – a likely future pattern • LTRA Scenarios • New emphasis for NERC – a big issue for them • 2009 Scenario: Accelerated renewable integration – 15% total energy from renewables by 2018 • Build off TEPPC 2017 WIRAB case (20% CO2 reduction from 2005 levels) • Bring in results of other studies (e.g., CAISO, WWSIS) • Study plan approved by NERC PC, report due spring 2009

  5. Future Work • Following NERC developments and working with Western participants on NERC resource adequacy-related task forces and subcommittees • Expect additional data requests for NERC studies • Expand analysis of energy constraints • Evaluating future use of Promod for adequacy assessments • Continuing to work with TEPPC on getting most efficient data gathering process

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