A distributed energy collection system that harvests waste thermal energy from urban infrastructure — building HVAC exhaust, vehicle engines, industrial processes, and even human body heat in crowded spaces — and converts it to electrical power through thermoelectric generator arrays embedded in structural surfaces. The ATHG turns GLMZ itself into a power source, with every warm surface contributing to the grid. The system produces modest power per square meter but scales with city density, making the most crowded, industrially active districts the most productive energy zones.