NOVELTY - The plant (1) has a flotation part (13) immersed in water with waves (3), and connected to an activating part of a drive shaft coupled to a first electric generator. A second electric generator is operated by wind turbines. A third electric generator comprises photovoltaic panels. An interfacing unit comprises a conversion unit i.e. alternating current/direct current (AC/DC) converters, to convert electric power provided intermittently by each electric generator into an equivalent direct current electric power at a specific direct current (DC) voltage across an electric line.    USE - Plant for producing electrical energy from local renewable energy sources such as tidal energy, solar energy and wind energy, in coastal area, for electric car battery recharging facilities and low-voltage electricity mains.    ADVANTAGE - The plant enables integration of three generators fed by three different sources of renewable energy. The third generator can provide adequate amount of power on a day with a calm sea, and the first and the second generators can provide adequate amount of power on cloudy days with rough seas and strong gusts of wind, thus enabling more uniform supply of electric power over a longer period of time as compared when the sources are exploited separately. The plant is equipped with a control system that directs productive generators onto the charge, and cuts off the unproductive generators so as to prevent use of power by the unproductive generators. The plant is an entirely ecologically sustainable structure with better environmental impact, and is equipped with a wharf that can be used as a tourist attraction and for housing shops, refreshments, seating and other amenities. The plant can be arranged with a recharging building whose roof can be fitted out for visitors as a panoramic viewpoint. The plant provides another panoramic viewpoint at a soundproofed and wide glazing room at an uppermost part of the wind tower of the plant, and users can access an external gallery from the panoramic room when the blades of the wind tower are inactive. The wharf can be designed in different ways, such as a port for boats or a pier. The plant enables use of electricity produced in a surrounding area so as to light tourist villages, holiday camps, drive-ins and amusement parks, or to supply a plant for the production of hydrogen. The control system is operated by a microprocessor to increase productivity of active generators during windy days and rough seas, and to couple a shaft of additional dynamos to the dynamos already in use. The control system is fitted with a robot for cleaning the photovoltaic panels and with an atmospheric detector for activating the panels, thus avoiding influence of productivity by the panels. The plant enables exploitation of energy from wave motion in a mechanically simple and effective manner.    DETAILED DESCRIPTION - The flotation part includes a row of floats connected to arms.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the plant showing cross-section of the ground.    Plant (1)    Waves (3)    Flotation part (13)