Abstract: This paper presents an optimal linear control of an energy harvesting system. Energy harvesting system models are typically non linear and therefore utilize a non linear controller. In this work, an investigation on the performance of a linear controller for a nonlinear harvester model is shown. The aim is to maximize the energy produced by implementing an optimal linear control algorithm. A mathematical model of the harvester is given. All simulations were conducted in matlab and simulink. Results obtained satisfy the conditions of optimality.