An efficient integration of Internet of Things (IoT) and cloud computing techniques accelerates the evolution of next-generation smart environments (e.g., smart homes, buildings, cities). The advanced modern cloud networking architecture also helps to efficiently host, manage and optimize the IoT services in smart environments. In this paper, we have considered an “IoT-Cloud” environment where servers are composed of Field Programmable Gate Arrays (FPGAs) which are reconfigurable in nature. The energy consumption is considered as a major driving factor for the operational cost of the “IoT-Cloud” platform. We have proposed an “energy-aware application management” strategy for FPGA-based IoT-Cloud environments, which can efficiently handle sensors’ data transmission by positioning them into the best possible coordinates and execute the Service Requests requested by the users.We have compared our strategy performances with an existing technique and the results show that our proposed strategy is capable to achieve high resource utilization with low energy consumption over different simulation scenarios.