Industrial designer Doron Hadar has created the Eco TreeCity – a public lighting concept. This elegant and ambitious concept uses an integrated freestanding solar element. The lights are randomly put together anywhere to make a unique tree like light. This concept is perfect in any weather, because the interactive system changes its light color according to the weather. It turns into a warm yellowish-white color during cold winter day and into cold bluish-white color during hot summer days. Festive color combinations of lights are also available for the holidays. In addition to that, this concept is maintenance free because the solar panels lasts for about 20-25 years and the battery life is about 5-7 years.