A great idea from BigBelly Solar. Philadelphia has installed several of these on their city streets. Below is the press release from BigBelly.
BigBelly is the world's only solar-powered cordless compaction system. It uses the sun's energy to automatically compact trash at the point of disposal, dramatically increasing capacity by 5 times within the same footprint as ordinary receptacles. Increased capacity reduces collection trips and can cut related fuel use and greenhouse gas emissions by 80%. The enclosed design keeps pests out and litter in. Safe and easy to use, the BigBelly has proven successful in urban streets, parks, colleges, arenas - and in all weather conditions.