Machine to machine communication is increasingly represented in today's telecommunication systems. Sensor networks have the characteristics of self-organization and intelligence that allow them to adapt to different environmental conditions. New standards and communication protocols allow communication and optimize for different use cases, but the problem arises when we want to allow communication of nodes with different communication technologies. The planning and the construction of such heterogeneous networks is not an easy task, therefore program simulators are used. In this thesis a simulation software is implemented to monitor the energy consumption in a multi-technology network. The paper discusses the most important concepts of ad-hoc networks and program simulations that are needed to understand the logic behind the implemented simulator. Furthermore, the basic components and the software architecture is described in more detail with the help of UML diagrams. The implemented simulator can be used to simulate a single network configuration or it can be used in batch mode. Batch simulation mode uses search algorithms for exploring the valid network configurations space. The simulator input consists of parameterized network topology description and additional parameters about the system behaviour. The simulator is implemented in OOP paradigm which allows easy addition and expansion of the existing components to achieve the desired functionality. At the end of the thesis an analysis of some network examples achieved with the help of the implemented simulator is presented.