Pyongyang's solar powered street lamps

It has been reported in North Korea state TV that the capital city of North Korea, Pyongyang, started developing street lamps powered by solar energy. Since North Korea is a very isolated country in international trading, an associate professor from Kim Chaek University named Cho Hyon Ho, developed a solar panel and battery combination onto street lights. Although the technology used for the development isn't advanced compared to the production of solar panels from Japan and China, this can be summarized as a new approach for North Korea and their future endeavors.