Thursday - Sunday Declared Flex Your Power NOW! PowerWatch Days

Business Wire, June 21, 2006

FOLSOM, Calif. -- The first day of summer is bringing the first significant heat wave of the year. Widespread triple-digit temperatures will result in high electricity demand and may impact power supplies. California ISO urges consumers to practice conservation habits through Sunday at 7:00 p.m. in order to reduce the strain on the power grid and prevent electrical emergencies.

24-Hour Ahead Outlook for Thursday, June 22
                  Flex Your Power NOW! PowerWatch Day

     Stage 1: possible   Stage 2: unlikely   Stage 3: unlikely
     Forecast peak demand:  Approx. 42,300 megawatts around 4:00 p.m.

               48-Hour Ahead Outlook for Friday, June 23
                  Flex Your Power NOW! PowerWatch Day

Statewide high temperatures are expected to continue and intensify
somewhat and Friday could see a new record for electricity demand.

     Stage 1: possible   Stage 2: unlikely   Stage 3: unlikely
     Forecast peak demand: Approx. 44,000   megawatts around 4:00 p.m.

           72-Hour   Ahead Outlook for Weekend (June 24/25)
                 Flex Your Power NOW! PowerWatch Days

     Stage 1: possible   Stage 2: unlikely   Stage 3: unlikely
     Forecast peak demand: Approx. 40,000   megawatts around 4:00 p.m.

Go to www.fypower.org for more conservation tips and please monitor the California ISO website at www.caiso.com for updated information about the electricity supply. The Systems Condition page provides current demand on the Grid and an hourly forecast of the day's electrical surplus/shortfall is available in Today's Outlook.

This advisory is based on the best data available at the time of its release. Grid conditions can change rapidly and are subject to change without warning. The recipient accepts this forecast on the condition that errors, omissions and/or changes to the contents shall not be made the basis for any claim, demand or cause of action against the California ISO.

Stage 1 Emergency
Consumers are urged to reduce their use of electricity voluntarily to
avoid severe conditions.

Stage 2 Emergency
Voluntary interruption of service to select customers is possible to
avoid more severe conditions.

Stage 3 Emergency
Consumers are advised that involuntary interruptions of service have
begun and will continue until the emergency has passed.

Powerful Habits
--  Set thermostat at 78 degrees or higher
--  Cool with fans
--  Draw the drapes
--  Turn off unnecessary lights and appliances
--  Use big appliances in early morning or late at night