<p>A Dual Resonating Electromagnetic-Piezoelectric Aided Micropower Generator cum Sensor (DREAMS) which captures low- frequency vibrations from the environment and transforms into usable&#xa0;electrical energy to power the wireless sensor networks (WSN) for sensing and monitoring applications is presented in this letter. DREAMS functions on two different mechanisms and works as a power source as well as auxiliary sensor in control and monitoring of structures such as tall buildings and bridges. This dual resonating hybrid energy harvester comprises an array of cantilevers anchored with the frame in pair-wise with proof mass facing opposite each other. Each cantilever has similar piezoelectric with electrode layers at the middle with proof-mass at the free-end. In each pair, one of the proof masses has a coil and the other has a magnet, both the piezoelectric (PE) and Electromagnetic (EM) works simultaneously. This letter focusses on developing a mathematical model of a dual resonating vibrational energy harvester and validating it with simulation results by finite element method for computation and analysis. A simple DREAMS device having five cantilever pairs yields an output power of 640 µW with a power density of 102 µW/cm³ is presented in this paper. This vibration sensor cum generator enriches the overall functions, making it the best choice for structural health monitoring applications.</p>