This keg is made from fully recyclable plastics, weighs about 30 pounds less than a standard keg, and has the potential for keeping beer fresh for longer than metal. It’s still a standard size and shape so it’s supposed to work with existing beer logistics. There are financial incentives to beer distributors, too, since it’s a lower cost of materials and lower risk for lost or damaged kegs.
I’d like to keep an eye on this, because it’d be interesting to see how well they work in practice and whether they make their way to the United States. I’d also be interested to research the comparative polluting effects of manufacturing and recycling polyethylene terephthalate vs. steel or aluminum.