NOVELTY - The energy photobioreactor has towers (1), which are circular, concentric, and single-chambered or double-chambered for performing photosynthesis. Mixing and clearing tanks (2) containing mixture of nutrients and gases necessary for the development and cultivation of phytoplankton and mechanical extraction systems (25) are provided. Control sensors (9) for culture medium, natural light inlets (12), lamps (13) for producing artificial light, control panels (14), recirculation pumps (15), accumulation and flotation tanks (17) and floats (18) are also provided.    USE - Used for obtaining pharmaceutical products of fatty acids and lutein type, cosmetics of glycerin, pigments and emulsifying substances type, industrial products of borosilicates and ferrosilicates type with silica content, obtaining fertilizers, agricultural, industrial and livestock products, cellulose and hemicelluloses, tannins and astringent compounds, for fixation of carbon dioxide, methane, sulfur hydride, nitrogen dioxide, nitrates and other greenhouse gases (all claimed).    ADVANTAGE - The energy photobioreactor ensures a closed system of large volume and diameter, working continuously, making possible to obtain large quantities of biofuels or secondary products such as gasoline, glycerin, derived from silicon compounds such as ferrosilicates, does not generate pollution because all potential waste, such as carbon dioxide, are recirculated in the system for their use as a nutrient for phytoplanktons. The energy photobioreactor is submersible in liquid medium e.g. oceans, seas, lakes, reservoirs, where phytoplanktons and water is used in cost-effective manner, and is very environment-friendly as the photobioreactor facilitates the processes of absorption or elimination of the greenhouse gases.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of the energy photobioreactor.    Towers (1)    Mixing and clearing tanks (2)    Control sensors (9)    Natural light inlets (12)    Lamps (13)    Control panels (14)    Recirculation pumps (15)    Accumulation and flotation tanks (17)    Floats (18)    Mechanical extraction systems (25)