Americans consume around 3.9 billion bottles of wine each year, most of them glass, but only 30 percent of glass is actually recycled. Most bottles go to the landfill—an estimated 10 percent of the U.S. landfill by weight is glass.
A stainless steel keg that restaurants can use to serve wine from a tap has about a thirty-year life span, and the goal is to turn it over four times a year. We use 19.5-liter kegs, which hold the equivalent of twenty-six bottles. So in the course of a single keg's life span, the need to create, move around, and dispose of 3,120 glass bottles of wine is eliminated.