Enron's Financial Security in the ISO's Markets ISO Market Participants: MARKET NOTICE December 3, 2001 Enron's Financial Security in the ISO's Markets ISO Market Participants: In response to inquires from ISO Market Participants, including suppliers and Scheduling Coordinators, the ISO confirms that Enron is not in default of any obligations due the markets as of this date.  Further, the ISO has requested and has received from Enron cash security in an amount estimated by the ISO to be sufficient to meet Enron's load requirements in real time for a period of three days, in the event that Enron defaults entirely on its market obligations.  The security amount is based on Enron's average daily metered demand in recent weeks, the current average market clearing price, ancillary service charges and grid management charges.  The ISO will monitor Enron's transactions on a daily basis and will require additional security if needed.  If you have questions, please contact Keoni Almeida at kalmeida@caiso.com  or (916) 608-7053. Client Relations Communications.0715 CRCommunications@caiso.com