Connection to distribution grid of seven perspective power plants of different types is presented in the paper. Computer simulation models of distribution grid for two power system critical regimes, maximum and minimum load, are made with the aim of analysis of power evacuation from power plants. Short circuits and load flow system analyses are carried out by using the computer simulation models in order to investigate connection criteria defined by distribution system grid code. It is presented in the paper that high power production could be connected to and evacuated over middle voltage distribution grid. Power flows in distribution grid are significantly changed by high power penetration of perspective power plants causing active power to flow from distribution to transmission grid.