DG/DERs have historically recognized advantages and concerns. These have led to DG playing a complementary role to centralized power generation. However, new conditions in many power markets are raising the possibility that DG might play a more prominent role. This paper reviews pros/cons attributed to DG/DERs, discusses new conditions prevailing in power markets, and assesses the likelihood that DG’s role may grow in the near term and the post-2030 era.