Relating to the resilience of the electric grid and certain municipalities.

Added new definitions for 'micro-grid', 'public utility', 'security commission', and 'insider threats' to broaden the bill's coverage of grid vulnerabilities.

Created a new Texas Grid Security Commission with representatives from emergency management, the Railroad Commission, ERCOT, and power generation companies to oversee grid resilience efforts.

Modified load shedding exercise requirements to include annual summer and winter exercises plus biennial attack threat simulations, with specific roles for law enforcement and critical facility operators.

Added requirement for the security commission to evaluate nuclear generation sites and communicate with the Nuclear Regulatory Commission about resilience to all hazards.

Set December 1, 2026 deadline for the security commission to prepare resilience standards and a comprehensive all-hazards resilience plan for the legislature.

Added provisions requiring security commission members to obtain federal secret security clearances and establishing an information security working group to manage confidential information.

Added specific technical requirements for upgrading industrial control systems to withstand 100 kilovolts/meter E1 and 85 volts/kilometer E3 electromagnetic pulses.