Subject:  CAISO Notice - Implementation of OASIS Reports 
				IMPORTANT NOTICE - Implementation of OASIS
Reports
				December 19, 2001

			ISO Market Participants:

			The November 7th and November 20th FERC decisions
require additional information to be provided to Market Participants through
OASIS.  The following is the current implementation schedule:

	

			OASIS
CERS Transition	
			Tab Location			New Report Name
Effective Date		Item Number*
			System Load			System Loads by IOU
12/01/01		B.1.c, B.2
			Ex-Post				Real-Time Imbalance
Energy Price Summary	12/13/01		B.1.d, B.1.e, B.1.f
			Transmission			Branch Group
Congestion Market Summary	1998			B.1.g
			Ancillary Service			Ancillary
Service Summary Report		12/12/01		B.1.h
			Forecast				Forecasted
Imbalance Energy Requirements	12/12/01		B.3
			To Be Determined			Muni's Hour
Ahead Load Schedules		To Be Determined**	B.1.a
			To Be Determined			Hour Direct
Access Load			To Be Determined**	B.1.b

			*  CERS Transition Item Number refers to information
provided in the CAISO Market Notice "Changes to Provision of Data to CERS"
dated November 30, 2001
			** Implementation Schedule is expected to be
released in the next week.

			Specific report details and data definitions are
provided in the OASIS Glossary of Terms, accessible from the OASIS Home
Page.


			Client Relations Communications.0921
			CRCommunications@caiso.com




