Preparedness hold a key role in mitigating the negative effects not only of events with impacts on human health and life, as well as all other protecting interests in the Czech Republic. The primary objective of preparedness is to reduce the humanitarian, social, economic and environmental impacts of emergencies on affected populations and to help them recover and resume ordinary life as quickly and effectively as possible. The preparedness of a territorial unit is an important and necessary part of the sustainable development of society. The development of human society creates opportunities to prevent specific types of danger. Many tools can be used to ensure and verify preparedness in the area for negative consequences, such as tactical or screening exercises. The new trend for verifying preparedness is the use of simulations. The article points out the results of the SWOT analysis on the use of simulation as a suitable tool for verifying the preparedness of the territory. The SWOT analysis includes a financial analysis of the costs and benefits of simulation in the verification of preparedness at VSB-Technical University of Ostrava, Faculty of Safety Engineering, Centre of Simulation Technologies.