Relating to prohibiting the adoption or enforcement of certain federal emissions regulations during a declared emergency.

HB 3933 prohibits Texas state agencies, local governments, and special districts from adopting or enforcing U.S. Environmental Protection Agency (EPA) emissions regulations related to electricity generation, transmission, distribution, or natural gas processing/transportation during a governor-declared extreme weather emergency. The bill makes such federal rules unenforceable in Texas during these emergencies if they interfere with maintaining reliable power service. It also allows affected parties to sue for damages if entities enforce prohibited EPA rules. The law applies only during emergencies defined under Texas law (Section 104.258).