The California Independent System Operator (CAISO) is a non-profit, public benefit corporation that manages the flow of electricity across the high-voltage, long-distance power lines that make up about 80% of California's and a small part of Nevada's electric grid. CAISO is dedicated to ensuring grid reliability, facilitating a transparent and efficient wholesale electricity market, and promoting the development and integration of renewable energy resources. It plays a pivotal role in California's ambitious clean energy goals and operates the Western Energy Imbalance Market (WEIM).
Serves as the central hub for grid operations, market management, engineering, IT, and administrative functions. It houses the primary control room for monitoring and managing California's electricity transmission system.
State-of-the-art control room with advanced monitoring and visualization technologies. The facility is LEED Gold certified, reflecting a commitment to sustainability. Designed for high security and 24/7 operational reliability.
A mission-driven environment focused on public service, reliability, innovation, and collaboration. Employees are highly skilled professionals, including engineers, analysts, and operators, working in a dynamic and technically challenging field.
The Folsom headquarters is critical for the economic and social well-being of California, ensuring the reliable delivery of electricity to millions. It is central to California's efforts in decarbonization and managing an increasingly complex grid with high levels of renewable energy.
While primarily focused on managing the electric grid for approximately 80% of California and a small part of Nevada, California ISO's influence extends significantly across the Western United States and into Canada through its operation of the Western Energy Imbalance Market (WEIM). The WEIM is a real-time wholesale energy trading market that includes participants from numerous states in the Western Interconnection, enhancing grid reliability and economic efficiency across a vast geographic area.
250 Outcropping Way
Folsom
CA
USA
Address: 101 Parkshore Drive, Lincoln, CA 95634
Enhances the resilience of California's power grid management by offering a fully functional alternative operations site in case of disruptions to the main Folsom headquarters, crucial for disaster recovery and business continuity.
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As of April 2025, California ISO' leadership includes:
California ISO has been backed by several prominent investors over the years, including:
Over the past year, California ISO has experienced key leadership changes, including the appointment of a new Vice President, Chief Financial Officer and Treasurer, and a new Vice President, General Counsel and Chief Compliance Officer. Additionally, a long-serving executive was promoted to Chief Operating Officer.
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California ISO primarily utilizes an email format that combines the employee's first initial with their last name, followed by the @caiso.com domain. This is a common structure for official communications.
[first_initial][last]@caiso.com
Format
jdoe@caiso.com
Example
90%
Success rate
CAISO News Releases • May 23, 2024
The California ISO has issued a Restricted Maintenance Operations (RMO) for May 24 through May 29, 2024, due to forecasted high temperatures and electrical loads across the state. This measure aims to minimize generation and transmission outages to ensure system reliability during the period of increased demand....more
CAISO News Releases • May 7, 2024
The California ISO announced the appointment of Mark Rothleder as its new senior vice president and chief operating officer (COO), effective May 6, 2024. Rothleder, a 25-year veteran of the ISO, previously served as Vice President of Market Policy and Grid Performance....more
CAISO News Releases • April 25, 2024
The CAISO Board of Governors approved the 2023-2024 Transmission Plan, authorizing nearly $6.1 billion in new high-voltage transmission projects. These projects are designed to maintain grid reliability and support California's transition to clean energy by integrating new renewable resources and accommodating future load growth....more
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