Contact us

Thank you for reaching out, we appreciate your interest in connecting with us.
Our business hours are Monday through Friday, 7:30 a.m. to 5:00 p.m.

If your question relates to residential electric service, including outages, please contact your electric utility provider directly using the contact information found on your electric bill.

Looking for a Quick Answer?

Before submitting a request, check out our Knowledge Base for answers to frequently asked questions.

If you did not find what you need in the Knowledge Base, please use our Inquiry Submission Form. Our team reviews submissions daily and responds as quickly as possible, in the order they are received.

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.

Contact directory

General inquiries or technical issues:

Main switchboard
(916) 351-4400

Media contact
Visit our web page for details

Tours & Speaker requests
Visit our web page for details

Employment verification
payroll@caiso.com

Campus information and mailing address

Folsom campus
250 Outcropping Way
Folsom, CA 95630

Campus security
(916) 351-2303 

Mailing address
California ISO
P.O. Box 639014
Folsom, CA 95630

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