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Market Notice
March 8, 2019

REQUESTED ACTION

Information Only

CATEGORIES

Information Technology

Market Operations

Settlements

System Operations

Western Energy Imbalance Market

California ISO to Transition to Pacific Daylight Time 3/10/19

MESSAGE

The California ISO will transition from Pacific Standard Time (PST) to Pacific Daylight Time (PDT) on Sunday, March 10, 2019. A Daylight Saving Time Short Day Information document is available on the ISO website at http://www.caiso.com/Documents/DaylightSavingTimeShortDayInformation.pdf. The document describes how the transition will occur in its various systems to ensure a smooth transition and contains information for the following systems:

  • Scheduling Infrastructure Business Rules (SIBR)/Base Schedule Aggregation Portal (BSAP)
  • Automated Dispatch System (ADS)
  • Customer Market Results Interface (CMRI)
  • Open Access Same-Time Information System (OASIS)
  • Settlements
  • Metering Implications

Schedule and Trade Submission

 

Market Timelines for the Short Day:

 

Market Closes

Market Impacted – Day-Ahead Market (DAM), Real-Time Market (RTM)

3/9/2019 10:00 PST

DAM (Bids) for Trading Day 3/10/2019

3/9/2019 11:00 PST

DAM (Trades) for Trading Day 3/10/2019

3/9/2019 23:45 PST

RTM (Bids) for Hour Ending 2:00

3/10/2019 0:15 PST

RTM (Trades) for Hour Ending 2:00

3/10/2019 0:45 PST

RTM (Bids) for Hour Ending 4:00

3/10/2019 1:15 PST

RTM (Trades) for Hour Ending 4:00

3/10/2019 1:45 PST

RTM (Bids) for Hour Ending 5:00

3/10/2019 3:15 PDT

RTM (Trades) for Hour Ending 5:00

3/10/2019 3:45 PDT

RTM (Bids) for Hour Ending 6:00

3/10/2019 4:15 PDT

RTM (Trades) for Hour Ending 6:00


CONTACT INFORMATION

ISO Service Desk at 1-888-889-0450

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California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States