A hydrokinetic smart grid (KSG) concept powered by modules of hydrokinetic microturbines arranged in rows is proposed in this work. A complete description of each module: mechanical design, hydropower characteristics, power electronics and control strategies have been included. A complete dynamic simulation of an example of a KSG has been performed. It considers microturbine modules, power loads, energy storage modules and a grid tie inverter that interface with the mains using a single connection. Additionally, the control and power stages of a hydrokinetic microturbine has been validated. The satisfactory technical results obtained in addition with the acceptable results of an investment analysis, encourage future implementations of KSGs.