The world’s first completely solar powered, thermoacoustically driven, thermoacoustic refrigerator has been improved with increased cooling power and higher efficiency. A larger 24-in.-diam Fresnel lens provides increased heat power to focus sunlight at 550<th>°C onto the hot end of a 1-in. reticulated vitreous carbon prime mover stack. The high-intensity sound waves produced by the prime mover are used to power a thermoacoustic refrigerator. The cooling power has been substantially improved and the temperature span has been increased from 18 to 30<th>°C with the cold end at 0<th>°C.