GIANT MARBLE HARVESTS ENERGY FROM THE SUN AND MOON This is a sun-tracking, solar energy concentrator. It's so sensitive to light that at night, it can even harvest moonlight and convert it into electricity. The sphere is 35% more efficient than traditional photovoltaic designs! This spherical lens solar generator uses a large water-filled glass ball to concentrate the sun's energy (by up to 10,000 times!) onto a small PV panel.
Sunnydaze Solar Pump and Solar Panel Kit with Battery Pack and LED Light