ISO Logo
August 21, 2019


Mark Your Calendar

Request for Comment


Information Technology

Legal and Regulatory

Tariff Amendment, Critical Infrastructure Cyber Security: Draft Tariff Language Posted, Call 9/11/19


The California ISO will hold a public stakeholder call on Sept. 11, 2019, to discuss proposed amendments to Critical Infrastructure Cyber Security tariff language contained in Section 20 of the ISO Tariff.


Section 20 currently allows the ISO to turn over market participant data, without notice, to the Federal Energy Regulatory Commission (FERC) and the Commodity Futures Trading Commission (CFTC) during an investigation. The proposed draft tariff language would also allow for the sharing of confidential information with the Department of Homeland Security (DHS), without notice, in the event of a cyber-attack on the ISO systems. This would enable the ISO to allow DHS immediate access to the ISO systems, pursuant to a nondisclosure agreement with DHS, without having to first notify market participants, which would delay DHS’s ability to protect against and investigate the attack.


The draft tariff language has been posted to the ISO website at


A web conference will be available for stakeholder convenience. The call will be recorded and the video file posted on the initiative webpage for a limited time. The recording is for informational and convenience purposes only, and any related transcriptions should not be reprinted without the ISO’s permission.


Please submit written comments to by end of day September 4.


Meeting Details

Date: September 11, 2019

Time: 2 p.m. - 4 p.m. Pacific Time

Add to calendar


Participation Information

Step 1: call 1-877-369-5230, access code: 0873246##

Step 2: join web conference

Technical support: call the AT&T Help Desk at 1-888-796-6118


Engage with us!
isoball twitterball RSSball Facebookball YouTube
Daily Briefing
Sign up
Daily Briefing
ISO Today
ISO Today
Flex Alerts
Sign up
Flex Alerts

California Independent System Operator | P.O. Box 639014 | Folsom, CA 95630 | United States