Contact us
Our business hours are Monday through Friday from 7:30 a.m. to 5 p.m. For questions regarding residential electric service, including outages, please contact your electric utility provider using the contact information on your electric bill.
Help us better serve you, please review our Knowledge Base for quick answers to many commonly asked questions. For questions related to retrieving data from OASIS, visit our OASIS Frequently Asked Questions.
Department contact information
To speak to a representative during business hours, please contact the department below that can best address your inquiry:
Customer Service
(916) 608-7320
Media contact
ISOMedia@caiso.com
Tours & Speaker requests
Visit our web page for details
Service Desk for RC West participants only
Local number: (916) 538-5722
Toll-free number: (833) 888-9378
System access or technical issues
(916) 351-2309 or (888) 889-0450
Procurement
isoprocurement@caiso.com
Employment verification
payroll@caiso.com
Human Resources
(916) 608-7000
Flex Alert
Visit FlexAlert.org for energy saving tips, what to do before and during a Flex Alert and to subscribe to Flex Alert notifications or update your Flex Alert subscription.
Campus information and mailing address
Folsom campus
250 Outcropping Way
Folsom, CA 95630
Main telephone number
(916) 351-4400
Security telephone number
(916) 351-2303
Mailing address
California ISO
P.O. Box 639014
Folsom, CA 95630