A floating unit for energy production comprising: at least one hull, internally provided with means for electric energy production (8); two or more ducts (10, 11) for feeding and discharging air respectively, emerging from an upper surface (5) of the hull (2) for connecting said means for electric energy production (8) to the external environment; and hydrostatic balance means (13) of the hull (2) to position the hull between an immersion condition in which it can stay fully under the water surface and a floating condition in which it is partly emerged and the respective upper surface (5) thereof is above the water surface; said pair of ducts (10, 11) in the immersed condition of the hull (2) being partly emerging above the water surface.