In the case of a partial or general power blackout in a hospital infrastructure, the most important issue becomes how to secure at maximum the patients' lives, especially those who are depending on electrical systems. In this paper, a novel web mobile-based evacuation support system has been developed. The proposed solution is consolidated by the improvement of several parameters such as communication quality, prioritization, staffing management and coordination. To evaluate the performance of the proposed solution, real tests were conducted in a hospital. The results showed that the proposed evacuation support system, compared to the classical solutions, is more efficient in terms of the actions execution time reduction and the information quality improvement.