This is a unique interactive solar powered tree design, which was unveiled at London Design festival. The structure comes with strands of light-emitting fabric woven into a lucent web of branches.
The structure, dubbed Son-Umbra, gets power from a PV-equipped canopy that harnesses solar energy during the day and stores it in on-board batteries to light up the tree after dark. It has encourages interaction with the visitors as the lights moves and play with music and sets by the sensors.
I especially liked the concept idea of SonUmbra, designed by Rachel Wingfield and Mathias Gmachl, which is a solar-powered electro luminescent wire which is intended for regions without access to the electricity grid, offering them a low cost and low maintenance alternative.