Fiscal year ending 2024. Filed on November 10, 2025.
250 Outcropping Way
Folsom, California 95630
California Independent System Operator Corporation (EIN: 94-3274043) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, California Independent System Operator Corporation, a 501(c)(3) charitable organization, reported compensation for 23 out of 788 total employees. Among the employees shown here, the average compensation is $706,554. The highest compensated employee at California Independent System Operator Corporation is Elliott Mainzer with fiscal year 2024 compensation of $2,308,710.
Revenue
Expenses
Employee compensation
No board members were reported during this fiscal year.
TO ENSURE EFFICIENT USE AND RELIABLE OPERATION OF THE ELECTRIC TRANSMISSION GRID OPERATED BY THE CALIFORNIA ISO, CONSISTENT WITH THE CALIFORNIA PUBLIC UTILITY CODE, CHAPTER 2.3 PART 1, DIVISION 1. (CONTINUED ON SCHEDULE O.)THE ISO DOES NOT OWN TRANSMISSION FACILITIES, BUT IT CONTROLS THE OPERATION OF A NETWORK OF TRANSMISSION FACILITIES LOCATED THROUGHOUT MOST OF CALIFORNIA, AND ALSO CERTAIN TRANSMISSION FACILITIES LOCATED IN NEVADA, THE OWNERS OF WHICH HAVE TRANSFERRED OPERATIONAL CONTROL TO THE CALIFORNIA ISO. FOR THE BENEFIT OF OUR CUSTOMERS, WE:- OPERATE THE GRID RELIABLY AND EFFICIENTLY;- PROVIDE FAIR AND OPEN TRANSMISSION ACCESS;- PROMOTE ENVIRONMENTAL STEWARDSHIP; AND- FACILITATE EFFECTIVE MARKETS AND PROMOTE INFRASTRUCTURE DEVELOPMENT, ALL THROUGH THE PROVISION OF TIMELY AND ACCURATE INFORMATION.
Be the first to know when new IRS Form 990 data is published for this organization.