The Syrian civil war enters its fifth bloody year this weekend. And the future looks dark for Syrians — both metaphorically and literally.

New satellite images, released by a coalition of 130 humanitarian and human rights organizations on Wednesday, show that 83 percent of the lights over Syria have gone black since the conflict began. Syrians fleeing the violence have left behind darkened homes, while fighting has destroyed buildings and power infrastructure, leaving broad patches of the nation without electricity.

As the animation below shows, many of the areas engulfed in darkness have been the hardest hit by the conflict. Aleppo, for example, has lost 97 percent of its lights. Idlib and Raqqa have each lost 96 percent. The exceptions, controlled in part or completely by the government, included Damascus and Quneitra, which showed declines of 35 percent and 47 percent respectively.