Contact us
Our business hours are Monday through Friday from 8 a.m. to 5 p.m. To speak to a representative during business hours, please contact the department below that can best address your inquiry:
Customer Service
(916) 608-7320 |
Human Resources
(916) 608-7000 |
Media contact
ISOMedia@caiso.com |
Employment verification
payroll@caiso.com |
Procurement
isoprocurement@caiso.com |
System access or technical issues
(916) 351-2309 or (888) 889-0450 |
Tours & Speaker requests
Visit our web page for details
Currently offering virtual orientation only |
Service Desk for RC West participants only
Local number: (916) 538-5722
Toll-free number: (833) 888-9378 |
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Use the form below to contact the ISO
A customer service specialist will respond to your inquiry.
Please review our
Help Center’s knowledge base prior to submitting an inquiry. If submitting an inquiry, please provide as much detail as possible in your request. For questions related to retrieving data from OASIS, visit our
OASIS Frequently Asked Questions.