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2013 Summer Overview

2013 Summer Overview . Jeffrey S McDonald Power System Operator CUEA San Diego, CA June 6, 2013. ISO history . ISO’s and RTO’s created following the 1992 passage of the Federal Energy Policy Act

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2013 Summer Overview

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  1. 2013 Summer Overview Jeffrey S McDonald Power System Operator CUEA San Diego, CA June 6, 2013

  2. ISO history • ISO’s and RTO’s created following the 1992 passage of the Federal Energy Policy Act • The California ISO was created in September 1996 as a nonprofit public benefit corporation with the passage of California Assembly Bill 1890 • March 1998 began serving 80 percent of the state California ISO Overview

  3. NERC Interconnections

  4. 38 Balancing Authorities in the West

  5. California ISO service area is diverse • 58,698 MW of power plant capacity • 50,270 MW record peak demand (July 24, 2006) • 26,500 market transactions per day • 25,627 circuit-miles of transmission lines • 30 million people served • 309 million megawatt-hours of electricity delivered annually

  6. Reliability Markets • Day Ahead • opens 7 days prior to the operating day • closes at 10 a.m. the day before electricity flows. • Real Time • Hour Ahead Scheduling Process (HASP) • Prior to real-time (RT) market, schedule energy and ancillary services for static interchange for 24 individual hours • Real-time market (RTM) • runs every five minutes

  7. High-tech control centers • The ISO operates two control centers, main headquarters in Folsom and a second control room in Alhambra • Operators staff the control center 24/7 • six rotating shifts (12 hours). (6 to 6)

  8. Historical ISO Peak Demand

  9. 2013 ISO 1-in 2 Peak Load Forecast • The ISO peak demand is projected to reach 47,413 MW • 738 MW more than the actual peak 46,675 MW recorded in 2012 (2.3 percent higher) • 3,393 MW of new generation since last year’s report 2013 Summer Loads Resources Assessment

  10. SUMMARY OF KEY FINDINGS The ISO system and the NP26 and SP26 zonal results are fairly similar to results in last year’s report The areas facing reliability risks during heat waves and other adverse conditions continue to be southern Orange County and San Diego. Slide 12

  11. Overview of the area and summer reliability challenges without the San Onofre nuclear power plant

  12. Key actions to mitigate local reliability concerns in southern Orange County and San Diego: • Conversion of Huntington Beach Units 3 & 4 to Synchronous Condensers • Installation of additional reactive support near SONGS –installation of 80 MVAR capacitors at each of the Santiago and Johanna substations and a 160 MVAR capacitor at the Viejo substation. • Barre-Ellis reconfiguration –reconfiguring the Barre-Ellis 220 kilovolt (kV) lines from the existing two circuits to four.

  13. Operational Challenges

  14. System Emergency (Procedure 4420) • Restricted Maintenance Operations • cancel or postpone any or all or work to preserve overall System Reliability • Transmission Emergency • any event that threatens, harms, or limits the capabilities of any element of the transmission grid and overall grid reliability • OP 4420

  15. System Emergency (Procedure 4420) • Alert Notice • issued by 1500 hrs the day before anticipated operating reserve deficiencies • Warning Notice • issued when the Real-time Market run results indicate that Operating Reserves are anticipated to be less required

  16. System Emergency (Procedure 4420) • Emergency Stage 1 • Operating Reserve shortfalls exist or are forecast to occur, and available market and non-market resources are insufficient to maintain Operating Reserve requirements • Emergency Stage 2 • cannot maintain its Non-Spinning Reserve requirement • Emergency Stage 3 • Spinning Reserve portion depletes, or is anticipated to depleted

  17. Interregional Coordination Team Facilitators Jeffrey S McDonald JSMcDonald@caiso.com

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