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.

To 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. 

Please be as detailed as possible. If you are a Market Participant with Customer Inquiry, Dispute and Information (CIDI) application access, please submit this inquiry through CIDI.

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
Visit our web page for details

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

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