MO HB2478

Requires solar farms (20+ acres) to obtain county permits before construction, with mandatory setbacks of 1,000 feet from residences, churches, schools, and city limits; 300 feet from other property lines; and 250 feet from public roads, plus noise limits of 45 decibels at property lines

Establishes new solar energy project tax assessment beginning January 1, 2027, at $6,000 per megawatt of nameplate capacity (adjusted annually for inflation), with associated land classified as commercial property

Limits total solar energy projects in any county to no more than 2% of cropland (based on USDA Census data), though county commissions may increase this cap; requires 1,000-foot setbacks from property boundaries for projects built after January 1, 2027

Expands Missouri's "renewable energy" definition to "alternative energy" to include nuclear power sources available after November 4, 2008, alongside existing sources like wind, solar, biomass, and hydropower

Removes eminent domain authority for construction of wind or solar generation facilities while preserving condemnation rights for transmission lines, substations, and other infrastructure needed to connect such facilities to the electrical grid