This paper presents the development of a computational tool designed to analyze the connection and impact of new projects in electrical systems, considering regulatory and legal restrictions in two countries with liberalized energy markets. The tool addresses the needs of grid operators in countries where the addition of new renewable energy plants requires studies to ensure the proper operation of the system in accordance with government policies on economic and financial incentives. The methodology involves the integration of Python and DigSILENT, enabling the tool to adhere to specific country's regulatory restrictions. The tool is applied to multiple case studies across three operational areas: the Atlántico department, the Bogota region, and the CQR region (Caldas, Quindio, and Risaralda). The developed tool has been shown to be efficient, producing consistent results in a short timeframe. These results are comparable to those obtained using conventional methods, while also improving productivity and time management. The tool provides valuable insights for grid operators and promoters, facilitating informed decision-making and ensuring the reliable integration of new projects into the electrical system. By leveraging this computational tool, network operators can effectively assess the feasibility and stability of integrating renewable energy projects, contributing to the advancement of sustainable energy transition and the fulfillment of international commitments to combat climate change.