IMPORTANT NOTICE
April Final Market and GMC Invoices Available

Final invoices for the month of April were sent to Market Participants on
Thursday 7/12/01 for your review. 

Please open your EDI mailbox to retrieve them if you have not done so
already. 

As a reminder, payments (market payments due-ISO and GMC) for the April
final invoices will be due at the ISO no later than 10:00 a.m. PST on
Friday, June 20, 2001.  The ISO will transmit market payments due-SCs based
on collections from SCs as soon thereafter as practicable.

Please remember how critical it is for the ISO to receive all payments by
10:00 a.m. PST on the due date and the importance of using the correct
account number which appears on each invoice.

Client Relations Communication
CRCommunications@caiso.com