Ticket Gates in Japanese railway produce electricity

With the latest issues of energy prices soaring through the roof, we’re surprised that the U.S. hasn’t jumped on top of this in places such as Boston and New York where it could definitely generating power back into the grid to help out even a little bit.
JR-East is experimenting with ticket gates installed with piezo elements that will generate electricity every time someone pushes through the gate. The more force applied, the more electricity. Very simple physics, but it’s actually a rather unique application. This would definitely be worthwhile for many types of applications here across the Pacific.\
Via Treehugger