← California State Legislature · All bills
AB 1408
Electricity: interconnections.
Assembly · Utilities and energy
What this bill does
This bill would require the ISO to integrate surplus interconnection service considerations into its long-term transmission planning and enhance transparency around surplus interconnection service opportunities, as specified. …
Read the full official summary
Existing law establishes the Independent System Operator (ISO) as a nonprofit, public benefit corporation and requires the ISO, among other duties, to ensure the efficient use and reliable operation of the transmission grid consistent with the achievement of planning and operating reserve criteria, as provided.
This bill would require the ISO to integrate surplus interconnection service considerations into its long-term transmission planning and enhance transparency around surplus interconnection service opportunities, as specified.
Existing law vests the Public Utilities Commission with regulatory authority over public utilities, including electrical corporations, while local publicly owned electric utilities are under the direction of their governing boards.
Existing law requires the commission to adopt a process for each load-serving entity to file an integrated resource plan, adopt a schedule for periodic updates to the plan, and ensure each load-serving entity take specified actions, as specified. Existing law also requires the governing board of each local publicly owned electric utility with an annual electrical demand exceeding 700 gigawatthours to adopt an integrated resource plan and a process for updating the plan at least once every 5 years to ensure the utility achieves certain goals, as specified.
This bill would require each electrical corporation, and each local publicly owned utility with an annual electrical demand exceeding 700 gigawatthours, to require the evaluation of surplus interconnection service options and to consider surplus interconnection service options, for purposes of its integrated resource plan.
This bill would also require each electrical corporation or local publicly owned electric utility to use available grid infrastructure through surplus interconnection service to use any available interconnection capacity, as specified.
Under existing law, a violation of the Public Utilities Act or any order, decision, rule, direction, demand, or requirement of the commission is a crime.
Because certain provisions of this bill would be part of the act and a violation of a commission action implementing the bill's requirements would be a crime, the bill would impose a state-mandated local program.
Additionally, by imposing new duties on local publicly owned electric utilities, the bill would impose a state-mandated local program.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for specified reasons.
Official summary from the Legislative Counsel’s office, via OpenStates.
Floor votes (3)
June 3, 2025 — Third reading vote
Passed · 79 yes · 0 no
Yes (79): Dawn Addis, Cecilia Aguiar-Curry, Patrick Ahrens, Juan Alanis, David Alvarez, Joaquin Arambula, Jasmeet Bains, Rebecca Bauer-Kahan, Steve Bennett, Marc Berman, Blanca Rubio, Tasha Boerner, Mia Bonta, Isaac Bryan, Lisa Calderon, Jessica Caloza, Juan Carrillo, Leticia Castillo, Celeste Rodriguez, Phillip Chen, Damon Connolly, Laurie Davies, Carl DeMaio, Diane Dixon, Sade Elhawary, Stan Ellis, Heath Flora, Mike Fong, Jesse Gabriel, James Gallagher, Robert Garcia, Mike Gipson, Heather Hadwick, Matt Haney, John Harabedian, Gregg Hart, Joshua Hoover, Jacqui Irwin, Corey Jackson, Jeff Gonzalez, Ash Kalra, Maggy Krell, Tom Lackey, Alex Lee, Josh Lowenthal, Ali Macedo, Mark González, Tina McKinnor, Michelle Rodriguez, Al Muratsuchi, Stephanie Nguyen, Liz Ortega, Blanca Pacheco, Diane Papan, Darsh Patel, Joe Patterson, Gail Pellerin, Cottie Petrie-Norris, Sharon Quirk-Silva, James Ramos, Rhodesia Ransom, Robert Rivas, Chris Rogers, Kate Sanchez, Pilar Schiavo, Nick Schultz, LaShae Sharp-Collins, José Solache, Esmeralda Soria, Catherine Stefani, Tri Ta, David Tangipa, Avelino Valencia, Greg Wallis, Chris Ward, Buffy Wicks, Lori Wilson, Rick Zbur, Anamarie Ávila Farías
Official motion wording
AB 1408 Irwin Assembly Third Reading
Official record: leginfo.legislature.ca.gov
September 3, 2025 — Third reading vote
Passed · 40 yes · 0 no
Yes (40): Ben Allen, Marie Alvarado-Gil, Bob Archuleta, Jesse Arreguín, Angelique Ashby, Josh Becker, Catherine Blakespear, Christopher Cabaldon, Anna Caballero, Sabrina Cervantes, Steve Choi, Dave Cortese, Megan Dahle, María Elena Durazo, Lena Gonzalez, Tim Grayson, Shannon Grove, Melissa Hurtado, Brian Jones, John Laird, Monique Limón, Mike McGuire, Jerry McNerney, Caroline Menjivar, Roger Niello, Rosilicie Ochoa Bogh, Steve Padilla, Sasha Pérez, Eloise Reyes, Laura Richardson, Susan Rubio, Kelly Seyarto, Lola Smallwood-Cuevas, Henry Stern, Tony Strickland, Tom Umberg, Suzette Valladares, Aisha Wahab, Akilah Weber Pierson, Scott Wiener
Official motion wording
3rd Reading AB1408 Irwin et al. By Padilla
Official record: leginfo.legislature.ca.gov
September 4, 2025 — Concurrence vote
Passed · 78 yes · 0 no · 1 other
Yes (78): Dawn Addis, Cecilia Aguiar-Curry, Juan Alanis, David Alvarez, Joaquin Arambula, Jasmeet Bains, Rebecca Bauer-Kahan, Steve Bennett, Marc Berman, Blanca Rubio, Tasha Boerner, Mia Bonta, Isaac Bryan, Lisa Calderon, Jessica Caloza, Juan Carrillo, Leticia Castillo, Celeste Rodriguez, Phillip Chen, Damon Connolly, Laurie Davies, Carl DeMaio, Diane Dixon, Sade Elhawary, Stan Ellis, Heath Flora, Mike Fong, Jesse Gabriel, James Gallagher, Robert Garcia, Mike Gipson, Heather Hadwick, Matt Haney, John Harabedian, Gregg Hart, Joshua Hoover, Jacqui Irwin, Corey Jackson, Jeff Gonzalez, Ash Kalra, Maggy Krell, Tom Lackey, Alex Lee, Josh Lowenthal, Ali Macedo, Mark González, Tina McKinnor, Michelle Rodriguez, Al Muratsuchi, Stephanie Nguyen, Liz Ortega, Blanca Pacheco, Diane Papan, Darsh Patel, Joe Patterson, Gail Pellerin, Cottie Petrie-Norris, Sharon Quirk-Silva, James Ramos, Rhodesia Ransom, Robert Rivas, Chris Rogers, Kate Sanchez, Pilar Schiavo, Nick Schultz, LaShae Sharp-Collins, José Solache, Esmeralda Soria, Catherine Stefani, Tri Ta, David Tangipa, Avelino Valencia, Greg Wallis, Chris Ward, Buffy Wicks, Lori Wilson, Rick Zbur, Anamarie Ávila Farías
Other / no vote recorded (1): Patrick Ahrens
Official motion wording
AB 1408 Irwin Concurrence in Senate Amendments
Official record: leginfo.legislature.ca.gov