Much has been written about the benefits of wireless sensors which enable measurements in harsh or hermetic environments. However, the problem concerning battery replacement is still open. This paper presents a new solution for a wireless self-powered sensors network, which allows the harvesting of energy from the action of a turbine wheel rotating in the path of a fluid stream environment. This new family of devices can find application in water/gas smart metering systems, subject of very large interest today. Furthermore, the proposed approach suggests a wireless network planning designed to eliminate problems related to a large cell radio architecture.