Pictures of solar powered refrigerators can be viewed on Internet sites such as NASA, DIY Green Energy Projects and Medical Expo. A general Internet search also yields many other sites that show pictures of solar powered refrigerators.
Solar-powered refrigerators run on energy provided by the sun, which includes photovoltaic or solar thermal energy. These types of systems are an environmentally-friendly alternative to conventional refrigeration systems that are known to deplete the ozone and cause global warming. While considered environmentally friendly, these systems are expensive and require the use of lead-acid batteries, which tend to deteriorate quickly. Batteries must be replaced approximately every three years, and must be properly disposed of as they are considered hazardous materials, possibly resulting in lead pollution.