Aug. 21, 2017 Solar Eclipse CAISO Impact Analysis Amber Motley - - PowerPoint PPT Presentation

ISO Confidential

• Aug. 21, 2017 Solar Eclipse

CAISO Impact Analysis

Amber Motley Manager, Short Term Forecasting Jim Blatchford

• Sr. Advisor, Short Term Forecasting

ISO Confidential

How will the August 21,2017 affect California BA?

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• N. San Joaquin

Mojave LA Basin Coachella and Imperial Valley Colorado River

• S. San Joaquin

Las Vegas

100% Eclipse @10:19 a.m. 100% Eclipse @10:30 a.m.

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What will be the potential MW impact on CAISO?

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The effects of rooftop solar and solar in EIM regions.

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EIM Entity Distribution MWs Commercial MWs Arizona 551 499 Nevada 265 1900 PacifiCorp 871 PSE 0.5 Total 816 3271

1204 1967 1768 2525 488 885 500 1000 1500 2000 2500 3000

Installed MWs

Behind The Meter Growth

SCE PGE SDGE

Growth Projection from CEC

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Lesson learned from Europe.

• Transmission System Operators

– Higher reserves – Committed to zero Area Control Error – Strategic use of pump storage – Limited generation planned outages – Reduced high voltage direct current line capacities between the Nordic, United Kingdom and Continental Europe. – Activated emergency telecommunications, with back up – Specialized training for operators. – Raised awareness with market players and distribution system

• perators.
• Germany

– Procured 2 times normal regulations – Germany established special operational concepts for reserves

• Italy

– Reduce northern net transfer capability – Reduced day ahead PV production from 7 a.m. to 2 p.m.

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Potential mitigations to be studied by ISO:

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• Scheduling Coordinator engagement
• Reserve procurement
• Gas supply coordination
• Flexi-Ramp usage
• Special Operating Procedures
• EIM transfer capability
• WECC/Peak RC coordination
• Hydro reserves

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What is the Mitigation Measure timeline?

• A preliminary timeline has been developed to allow

sufficient time to address any issues arising from the eclipse:

September –December 2016 – Announce eclipse study at Market Performance and Planning Forum Sept 20. – Request MP input.

• January –March 2017

– Develop Solar Eclipse Mitigation Procedure. – Circulate with SCs for comment. – Publish Procedure.

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Thank You

• Please provide feedback By Nov 3rd to

ShortTermForecasting@caiso.com

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