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Summer Readiness and Flex Alerts

The California ISO provides early warnings of possible electricity outages, which allow the public to better prepare for service interruptions and encourages energy conservation that may help prevent blackouts from occurring. Learn about how to use electricity wisely and help the power grid.



Visit Today's Outlook to see the current Flex Alert status.
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Click here to visit the Flex Alert website.

For the Home:

  • Set your thermostat at 78 degrees or higher when home and turn it off when away.
  • Keep the refrigerator full (with bottles of water if nothing else) and unplug that second unit.
  • Switch off the lights when you leave a room.
  • Avoid using appliances during peak hours of late afternoon and evening, preferably after 9 p.m.
  • Reset your pool pump to run during off peak hours.

For the Office:

  • Turn off the computer monitor when you're away from your desk (it's the biggest power drain on your computer system).
  • Turn off the lights and computers in empty offices.
  • Switch off the coffee maker at 10 a.m., leave a full pot and reheat individual mugs in the microwave.
  • Leave half of the room's overhead lighting off -- it's a double savings, less light also means less heat so your air conditioner gets a break.
  • Check that office thermostats are set at 78 degrees or higher during the day and off in the evenings and weekends.

Para el hogar:

  • Ajuste el termostato a 78 grados o más cuando esté en su casa y apáguelo cuando se vaya.
  • Llene su refrigerador (con botellas de agua, si no tiene otra cosa) y desenchufe la segunda unidad.
  • Apague las luces cuando salga de un cuarto.
  • No use sus electrodomésticos en las horas pico críticas, en las tardes y las noches, de 4 a 9 de la tarde.
  • Programe la bomba de su alberca para que funcione en horas de bajo consumo de electricidad.

Para la oficina:

  • Apague el monitor de su computadora cuando se aleje de su escritorio (es el mayor consumidor de electricidad de su sistema de computadora).
  • Apague las luces y las computadoras en oficinas desocupadas.
  • Apague la cafetera a las 10 de la mañana y deje un termo lleno de café. Vuelva a calentar el café en tazas individuales en el microondas.
  • Apague la mitad de las luces del cielorraso en su oficina. El ahorro será doble, ya que las luces no generarán tanto calor y el aire acondicionado consumirá menos.
  • Ajuste los termostatos de la oficina a 78 grados o más durante el día y apáguelos por la noche y los fines de semana.

A heat wave, according to the American Red Cross, is “a prolonged period of excessive heat, generally 10 degrees or more about average, often combined with excessive humidity”. An increase of just a few degrees outside can cause body temperatures to spike, which poses a health hazard to organs. Babies, the elderly and people with health problems should take extra precaution as they have a higher risk of heat exhaustion due to the fact that their bodies can not cool down as fast.

A heat wave can cause

  • Dehydration
  • Heat exhaustion and heatstroke

Signs of possible heat exhaustion or heat stroke

  • High body temperature
  • Dizziness
  • Nausea

How to prevent heat-related illness

  • Wear lightweight or light-colored clothing
  • Drink more water than usual
  • Avoid alcohol and liquids with high sugar content
  • Do not wait until you are thirsty before drinking more water
  • Use sunscreen with a high SPF while outdoors
  • Avoid having outdoor activities and errands in the hottest part of the day; save those tasks for before noon or in the evening
  • Check up on any relatives, neighbors and/or friends who might be less able to look after themselves
  • Remember to take care of your pets as well. Giving your pet a cool towel to lay on and providing plenty of water are great ways to prevent heat stroke for them.

Conservation resources within the California energy industry

These websites are maintained by the agencies with which they are associated. The California ISO does not guarantee the accuracy or applicability for any particular purpose of these sites. Contact the sponsoring agency for more information regarding these sites.