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 |
Finance and Accounting
(916) 608-5937 | Procurement
isoprocurement@caiso.com |
Tours & Speaker requests
Visit our web page for details
Currently offering virtual orientation only | System access or technical issues
(916) 351-2309 or (888) 889-0450 |
| Service Desk for RC West participants only
Local number: (916) 538-5722
Toll-free number: (833) 888-9378 |
Use the form below to contact the ISO
A customer service specialist will respond to your inquiry.
Please review our Tips for Asking Questions of the ISO prior to submitting the form to find out how to get a timely and useful response. For questions related to retrieving data from OASIS, visit our OASIS Frequently Asked Questions.