2015 California ISO Declares Statewide Flex-Alert

June 30, 2015

California-ISOCalifornia ISO Declares Flex Alert for California

The California Independent System Operator Corporation (ISO) is declaring a Flex Alert for June 30, 2015 and July 1, 2015 for California.

Consumers are urged to reduce their energy use during the late afternoon when air conditioners drive consumption to the highest point of the day. Find Flex Alert tips at www.caiso.com.

Outlook for June 30 Flex Alert

High temperatures are forecast for California. Energy demand is expected to be high and consumers are urged to reduce energy usage between 2:00 p.m. and 9:00 p.m.

Forecast peak demand: 44,700 megawatts around 6:00 p.m.

Outlook for July 1, 2015 Flex Alert

Hot weather is forecast to remain in place today and peak energy demand will continue stress the grid. The California ISO is urging reduced energy usage between 2:00 p.m. and 9:00 p.m. PDT.

72-Hour Ahead Outlook for July 2, 2015  

Temperatures will continue to be hot. Conservation is important. 

Please monitor the California ISO website at www.caiso.com for updated information about the electricity supply. Track grid conditions in real time via Today's Outlook also available on smart phones. Go to your app store for a free download.

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. This forecast is accepted by the recipient 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.

Funded by the investor-owned utilities and authorized by the CA Public Utilities Commission, Flex Alerts are part of an educational and emergency alert program that informs consumers about how and when to conserve electricity.

2013 FLEX ALERT Issued July 1 to July 2

July 1, 2013

California-ISONorthern California - ONLY
Flex Alert issued by California ISO as heat wave intensifies

With hot temperatures bearing down on Northern California and with a major generation unit off line, the California Independent System Operator Corporation (ISO) is issuing a Flex Alert for Northern California Only on July 1, 2013, through July 2, 2013. No Flex Alert is issued for Southern California as temperatures moderate but watch for updates on www.caiso.com. Consumers are encouraged to reduce their energy use during the late afternoon when air conditioners drive consumption to the highest point of the day. Go to www.flexalert.org or www.caiso.com for conservation tips.

24-hours ahead: Northern California ONLY Flex Alert Day! on July 1, 2013. High temperatures are forecast throughout the state and region. Energy demand is expected to be high and Californians are asked to avoid using heavy electrical appliances until after 6 p.m. tonight.
Monday's forecast peak demand: 48,300 MW around 4:30 p.m.

48-hours ahead: Northern California ONLY Flex Alert Day! on July 2, 2013
Tuesday's forecast peak demand: 47,808 MW around 4:30 p.m.

72-hours ahead: July 3, 2013 No Flex Alert Day

Please monitor the California ISO website at www.caiso.com for updated information about the electricity supply. Track grid conditions in real time via Today's Outlook also available on smart phones. Go to your app store for a free download.

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. This forecast is accepted by the recipient 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.

Funded by the investor-owned utilities and authorized by the CA Public Utilities Commission, Flex Alerts are part of an educational and emergency alert program that informs consumers about how and when to conserve electricity.

2012 Stubborn heat wave triggers another statewide Flex Alert; conservation critical!

Flex Alert in Effect August 13th and 14th

California-ISOFolsom, Calif. – The week-long heat wave in California is picking up steam again and the mercury is on the rise. A Flex Alert is in effect tomorrow and consumers are urged to reduce their energy use. The ISO thanks consumers for their tremendous conservation efforts during last Friday's Flex Alert. Nearly 1,000 megawatts in energy reduction helped maintain grid reliability. The level of conservation is equal to the output of two large power plants. The main grid operator for California asks consumers to repeat efforts. Find Flex Alert tips at www.caiso.com.

Outlook for today, Monday, Aug 13: Conserve if possible

  • Flex Alert not in effect, but electricity conservation today between 11:00 a.m. and 6 p.m. is encouraged.
  • Today's Forecast peak demand: 47,489 megawatts
  • Monitor real time grid conditions at: http://www.caiso.com/Pages/TodaysOutlook.aspx.

24-Hour Ahead Outlook for Tuesday, Aug 14: Flex Alert!

  • High temperatures are forecast statewide. Conservation is critical.
  • Forecast peak demand: 47,500 megawatts
  • 48-Hour Ahead Outlook for Wednesday, Aug 15: No Flex Alert!
  • High temperatures are forecast statewide. Conservation helpful, but not critical.
  • Forecast peak demand: 45,000 megawatts

Go to www.caiso.com and click "Notify me" to sign up for Flex Alerts and other updates.

Funded by the investor-owned utilities and authorized by the CA Public Utilities Commission, Flex Alerts are part of an educational and emergency alert program that informs consumers about how and when to conserve electricity.

2012 California ISO Declares Flex Alert Statewide

August 9, 2012

California-ISOWith a major heat wave bearing down on California, the ISO is declaring a Flex Alert through Sunday, August 12.

Consumers are urged to reduce their energy use during the afternoon when air conditioners drive consumption. Find Flex Alert tips at www.caiso.com.

Electricity conservation today, August 9, would also be helpful during the afternoon peak between 11:00 a.m. to 6:00 p.m.

Please monitor the California ISO website at www.caiso.com for updated information.

2011 California ISO Declares Statewide Flex-Alert [PAST]

September 9, 2011

California-ISOWith the wide-spread electrical power outage impacting most of San Diego and surrounding areas, the California Independent System Operator Corporation (ISO) is declaring a Flex Alert for September 9, 2011.

The Flex Alert is in effect statewide as conservation in both Southern and Northern California will ease the strain on the power grid. Energy conservation tips can be found on www.caiso.com.

Conservation should be practiced all day and not just during the peak hours of 4-7p.m. If you are currently without power, please turn off air conditioning and all major appliances to protect against power surges as power is restored to the region overnight and into tomorrow.

The ISO is coordinating with San Diego Gas and Electric, Southern California Edison and neighboring utilities as power plants and substations return to service. While attention is focused on the San Diego region, the rest of California’s high voltage grid remains stable and is not threatened.

A major transmission disturbance that originated in Arizona left more than a million customers without electricity beginning at about 3:30 p.m. today.

The California ISO has coordinated the re-energizing of the 500 kilovolt transmission line that was impacted by the Arizona system disturbance.

Please monitor the California ISO website at www.caiso.com for updated information.

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. This forecast is accepted by the recipient 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.