SI Server will be UNAVAILABLE, TODAY, Wednesday, July 11, 2001

** URGENT NOTIFICATION: SI Server will be
UNAVAILABLE, TODAY, Wednesday, July 11, 2001 (14:18 to 14:55pdt) to Perform
a Fallback to our backup SI server in Alhambra.

Please submit all Hour Ahead schedules for
July 11th HE , 1800 and 1900 and Supplemental Energy schedules for, 1700
and 1800 prior to 1400!

Once the fallback is complete and the SI
system is available, Please clear your memory and disk caches (Edit,
Preferences, Advanced, Cache) & close all Netscape windows (including
messages). Restart Netscape and point your browsers to our Backup server by
utilizing the following URL: https://alhibk1b/iso.

This Fallback will allow us to minimize
potential interruption due to Electrical work being performed at the Folsom
facility. We expect to utilize the server in Alhambra until Monday, 7/16/01
through the publishing of the DA Final Schedules (14:18pst), after which we
plan to Fall-Forward back to Folsom. We will provide additional
notification to you on Monday.

Please contact Ginger Seitles (916) 351-4420
or Benik DerGevorgian (916) 351-2277 if you have any questions or concerns.

Thank you,
ISO Market Operations