(a) In this section, "residential energy backup system" means a backup energy system installed at a residential property that is capable of providing no more than 50 kilowatts of electricity to the residence or has a storage capacity of no more than 100 kilowatt hours.
(b) A municipality may not adopt or enforce an ordinance, rule, or other measure that would regulate the installation or inspection of a residential energy backup system.
(c) This section does not limit the authority of a municipally owned utility, as defined by Section 11.003, Utilities Code, to regulate the installation or inspection of a residential energy backup system within the utility's service area.