The document discusses solar trees, which are a decorative way to produce solar energy and electricity using multiple solar panels arranged in a tree-like structure on a tall pole. Solar trees offer advantages over traditional solar panels like requiring less land and being able to generate energy from both sunlight and wind. However, solar trees also have disadvantages such as high costs and potential hazards to wildlife. The document outlines potential applications of solar trees for street lighting and industrial power supply and envisions a future where solar trees help meet increasing energy demands in a sustainable way.