Relating to mass balance attribution of renewable biomass feedstocks used to produce renewable chemicals.

HB 4413 defines "renewable biomass" as waste materials from farms, forests, and processing (like crop residue, animal waste, or invasive species removal) and "renewable chemicals" as products made from these materials. It requires companies producing renewable chemicals to track and account for the renewable biomass used in their production through a "mass balance" system. This policy directly affects renewable chemical manufacturers in Texas, mandating they document their feedstock sources to meet state requirements. The bill amends the Health and Safety Code to establish these definitions and a certification process, effective September 1, 2025.