It works like this: Using only solar power (even in the shade), the receptacles compact trash so efficiently that each holds about 5 times as much refuse as a normal garbage can. That means it can save 4 out of every 5 collection trips, for an 80 percent fuel savings.
And not only does the Big Belly compactor save fuel, it also saves money at a time when the county is cutting back on the frequency of trash collection along the Rosslyn-Ballston corridor due to budget constraints. Plus, the devices can potentially save money on pest control by keeping rodents out of the trash.