Tidal energy to obtain electrical energy is yet an unexploited renewable energy. Existing generator designs and prototypes are not feasible due to the high investment conditioned by their high rated powers and off-shore locations. In addition, these prototypes are not readily available. This investigation presents a design of a microgeneration system with vertical axis microturbines. The design of the microturbines utilizes off-the-shelf electronic components, thus reducing the initial investment. The nominal data for selection of power electronic components and the total energy that can be obtained in a year are calculated. The investigation also studies the feasibility of an 80 kW microgeneration system to be applied in Spain, taking advantage of the actual electricity prices. The feasibility study quantifies the influence of the parameters: initial investment, tidal current speed, operation hours, turbine efficiency, price of electricity, and number of microturbines obtaining the limiting values of the suitable scenarios.