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Ad-hoc wireless networks are increasingly being used in communications especially in surveillance situations in unfriendly environments. Energy management problem of these communicating autonomous nodes is a major handicap especially for countries with limited financial resources. Indeed, the lifespan of this type of network is that of a few nodes. In this article, we propose the use of Software-Defined Networking (SDN) technology to optimize energy consumption in these nodes. In our approach, establishment and maintenance of path is provided by a controller. Nodes focus on packet switching. This approach is implemented in the well known reactive routing protocol, Ad hoc On-demand Distance Vector (AODV). Analysis of performances of this new protocol, SDN based AODV (S-AODV), that we propose, shows that, comparing with the standard AODV, we significantly improve nodes energy consumption …