This paper introduces the simulation and analysis of the integration of 1.5MW mini hydroelectric power plant into a microgrid. There are technical and economic gains that may be realized as well as constraints at integrating renewable energy generation, such as system improvements, better voltage profile, reduced line losses, reduced pollutants emissions and system reliability. It is necessary to perform load flow analysis when a system integration is conducted. The load flow analysis is essential to evaluate the planning, control, and operation of the interconnected power system grid to comprehend its steady state condition under normal operation. It is of paramount importance to understand the interconnection of systems, performing network analyses and understanding the behavior of various distributed generations in the market. The load flow calculation seeks to assess the parameters of the power system performance for real, reactive power, voltage magnitude and voltage angle in a system under specified load conditions. There are various load flow methods that are adopted to compute linear or non-linear load flow calculations. However, for the purpose of this paper we will utilize Newton Raphson method to perform load flow calculations using an IEEE modified test 10 bus system. The IEEE test 9 bus system will be modified by introducing bus 10, where the salient pole synchronous generator will be connected. The MATLAB software will be utilized to perform the load flow studies.