This paper describes the impact of connecting a new distributed generation to demand-dominated areas in electricity distribution network. The investigation is carried out by assessing three parameters of the network performance, i.e. voltage level, power losses and network utilization. The initial assessment is conducted on a reference network, which has several demand-dominated bus bars. Then, a certain capacity of distributed generation is connected to one of those demand-dominated bus bars, which is resulting in a new network configuration. Further assessment of the network performance is conducted on this configuration. The analysis shows that a new connection of distributed generation on demand-dominated areas has significant impact on the changes of the network performance, in terms of voltage level, power losses and network utilization.