Relating to the operation of Texas backup power packages.

HB 5633 establishes a program for Texas backup power packages, providing grants or loans from the Texas energy fund to support systems that can operate independently during grid outages. The bill requires these packages to minimize costs, enable immediate islanding from the grid, run for at least 96 hours without refueling, and serve up to 2.5 megawatts of load at a facility. They must use specified power sources like natural gas with solar/batteries or school bus battery storage, and cannot be used for selling energy unless under 2,000 kilowatts (exempting small systems from power generation registration). The law applies only to packages receiving funding after its effective date of September 1, 2025.