Gorgeous "sun tree" LED outdoor landscape lights

The sun tree is designed by Ross Lovegrove and is installed in St. John square in london. Sculpture assembled solar panels and LED lighting equipment. By 20''stem' ', six leaf like solar panels, four large lights and 10'' straw grass', each straw 'upper LED. The sun tree can work independently for three days, giving back the extra energy to the grid. Its behavior is controlled by an embedded AI system, which automatically switches the LED lamp at night, the balance of the light intensity depends on the energy level of the battery and the ambient light condition.