Now-a-days, Wireless Sensor Networks (WSNs) play an important role in real time applications due to its small size, low-cost and efficient energy utilization. Prior researches are mainly aimed at energy conservation in sensor nodes. The proposed system is to design the construction of energy efficient sensor nodes. This paper presents the design and implementation of efficient energy utilization of sensor node design that results in an energy efficient Wireless Sensor Networks (WSNs). In order to obtain energy efficient sensor node design, it should have the energy minimization both at sensor node level and network level.