Connections of distributed generation (DG) in distribution networks are increasing. These connections of distributed generation cause voltage rise in the distribution network. This paper presents a detail analysis of how does voltage rise on distribution network due to the penetration of distributed generation. This paper also presents how does the voltage rise affect the connection of distributed generation on distribution network. The analysis is done on a simple two-bus distribution network and a radial distribution network with and without DG by using worst case scenario (minimum load maximum generation). Finally, some recommendations are given to counteract the voltage rise effect.