Ad valorem tax; add categories for energy projects and enterprises for purposes of certain exemptions.

Mississippi Senate Bill 3116 (SB 3116) expands tax exemption eligibility for energy storage projects by adding battery energy storage systems to the definition of qualifying "projects" under existing property tax exemption rules. The bill amends Section 27-31-46 to include facilities storing energy via batteries (standalone or paired with renewable generation) and updates Section 27-31-101 to explicitly allow counties/municipalities to exempt up to 50% of the assessed value for such projects with at least $100 million in private investment. This directly affects energy storage developers and operators seeking property tax relief under Mississippi’s ad valorem exemption program. The bill extends the exemption period through 2028 but does not alter the 50% cap or $100 million investment threshold.