Due to the extensive energy consumption and high population density in modern cities. the collection and use of scattered walking energy from the stream of people is crucial for the development of a green ecological city. Herein. a flexible undulated electrode-based triboelectric nanogenerator (u-TENG) was integrated to the floor to scavenge walking energy from pedestrians. https://allfixelectricales.shop/product-category/bowl-neck-ring/