Led lighting of a building is a gaining phenomena. Till recently only parts of a building were lit through led lighting. But the palace pier great building in tronto was lighted completely with leds. The led technology was used to lit the whole building. The building will use only 4 watts of electricity instead of the halogen lamps which use 35 watts of electricity. The research for led lighting of a building is still continuing and the led lighting of a building is a paramount concept. There are many salient and main points that have to be considered regarding the led lighting of a whole building will become a worldwide reality.