the last two decades, the Wireless Sensor Network (WSN)paradigm has taken hold of the minds – WSNs has been adapted toa great number of applications [1–3]. Indeed, tiny wireless sen-sor nodes can be deployed in difficult-to-access areas, ensuringautonomous monitoring of physical conditions and delivering thedata to a user over the network. However, energy resource onboard,e.g. a battery, is a limiting factor preventing the application of WSNsin hazardous and combustible gases monitoring domain where gassensors are typically power hungry devices.