Relating to an exemption from ad valorem taxation of the amount of the appraised value of certain residential real property that arises from the installation in the property of certain energy efficiency-related improvements.

HB 294 creates a property tax exemption for residential homeowners in Texas who install qualifying energy efficiency improvements after January 1, 2027. The exemption applies only to properties built before 2011 and covers the increased tax value resulting from improvements like high-efficiency HVAC systems, insulation, smart thermostats, or solar-ready windows. Homeowners must install these upgrades after 2027 to qualify, and the comptroller will develop guidelines to help local tax officials administer the exemption. This policy directly affects existing residential property owners seeking to reduce long-term tax burdens through energy-efficient home upgrades.