<p>Because of the increase in electricity consumption, generation from fossil fuel sources is struggling to meet the customer load requirement. This leads to the extraction of the power from low carbon fuel sources due to the depletion of fossil fuel sources and environmental concerns. The DC coupling distributed energy sources are becoming popular due to the absence of reactive power control and synchronization with the utility. In addition, there will be a minimum power conversion stages compared to the current AC coupling distributed energy sources. Hence, the critical converter loss analysis is required to boost this system even more effective. Therefore, the research work develops a generic converter loss analytical estimation approach using MATLAB curve fitting application. To quantify this approach, the number of case studies are performed under distorted and undistorted utility voltage scenarios. The obtained results have been demonstrated that the total converter losses in the DC coupling hybrid DES have been reduced by 57% compared to the AC coupling hybrid DES, leading to an improvement in the overall system efficiency.</p>