Grid Operation, Market Operations, System Status/ Technical Update

CALIFORNIA ISO MARKET NOTICE

Requested Client Action: Information Only

Date of Distribution: January 11, 2008

Categories: Grid Operation, Market Operations, System Status/ Technical Update

Subject/ Title: ADS Client Time Zone Issue – May Require User Action

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Summary: The CAISO released an optional update for the Automated Dispatch System (ADS), client version 3.1.23.548, on January 4, 2008 to offer historical querying capabilities in addition to existing functionality. The release contains a bug that impacts all users outside of the Pacific time-zone.

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Main Text: On January 4, 2008, the California ISO (CAISO) released ADS client version 3.1.23.548, which was an optional update ADS that provides historical querying capabilities in addition to existing functionality. This release of ADS client version 3.1.23.548 contains a bug that impacts all users outside of the Pacific time-zone by preventing them from:

· Hearing the dispatch alarm

· Responding to their inter-tie pre-dispatch instructions

The bug does not affect the ability to view dispatch instructions or receive them through the API.

The CAISO is developing a patch and will undergo testing over the weekend for release early next week. Users can check their ADS version by opening the application and navigating to the “Help / About ADS” menu. Until a patch is released, users outside of the Pacific Time zone who recently updated their client to version 3.1.23.548 must do one of the following to ensure their ADS software is working properly.

1) Change their system clock to the Pacific time-zone. This will allow the ADS clock to be synchronized with the PC. This can be accessed by navigating to the Start/Settings/Control Panel/Date and Time menu or by double clicking the clock on your display. Once the Date and Time Properties window is open, select the Time Zone tab and choose Pacific Time, then click Apply and OK.

2) Revert to the previous version, 3.0.13.452, available at https://ads.caiso.com/ads_install/ADSApplicationClient.zip

Again, this affects users outside the Pacific Time zone. Users within the Pacific Time zone do not need to take action.

The CAISO apologizes for any inconveniences this bug has caused and is working diligently to get the issue resolved as soon as possible. For more information including Installation procedures and the previous Market Notice please refer to URL addresses below:

ADS Client Upgrade Procedure http://www.caiso.com/1b99/1b99aa3c32890.pdf

ADS Installation Instructions (Use this if ADS is not already installed) http://www.caiso.com/docs/09003a6080/15/cf/09003a608015cf7f.pdf

ADS Query Tool User’s Guide http://www.caiso.com/1cb9/1cb9e74d43400.pdf

Market Notice: ADS Client Update Complete and Enhanced Query Tool http://www.caiso.com/1f44/1f44c38c37a50.html

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For More Information Contact: Troy Siegel at tdsiegel@caiso.com