A tidal energy system (50, 60) enclosure for the extraction of energy from the potential energy contained in the ocean tides comprising:: (a) an array of support columns set at regular intervals in the ocean along the perimeter line determining said tidal energy system (50, 60) enclosure (b) a means of securing said support columns (20, 22) to the ocean floor (c) a predetermined number of panels wherein said panels are placed contiguously one above the other to the approximate height of and fitting precisely between adjacent pairs of said support columns (d) a means of firmly securing said panels to and between said adjacent pairs of support columns (e) a means positioned between each adjacently positioned panel and support column for sealing any space between each said panel and the support columns between which said panel is inserted (f) a predetermined number of caissons (g) pairs of support columns placed on either side of predetermined adjacent support columns within the aforementioned array so as to form two rows of support columns defining a caisson support perpendicular to said perimeter, the distance between two said rows being such that said caisson fits precisely between them, and the caisson being structured to be secured to the support columns by locking means (h) support panels inserted between each pair of directly opposite support columns of said two rows so that said caisson rests on said panels and therefore said support panels form a platform between said two rows for caisson (i) turbines, a predetermined number of said turbines being enclosed in each said caisson; (j) a means for allowing water to pass through said turbine at the will of a human operator; (k) electric generators, each said generator connected to one or more said turbines whereby said elements render said enclosure without gap and thereby separating the ocean without from the interior of said enclosure except at such time as said human operator allows water to pass through said turbines and causing said generators to produce electric power. (a) an array of support columns set at regular intervals in the ocean along the perimeter line determining said tidal energy system (50, 60) enclosure (b) a means of securing said support columns (20, 22) to the ocean floor (c) a predetermined number of panels wherein said panels are placed contiguously one above the other to the approximate height of and fitting precisely between adjacent pairs of said support columns (d) a means of firmly securing said panels to and between said adjacent pairs of support columns (e) a means positioned between each adjacently positioned panel and support column for sealing any space between each said panel and the support columns between which said panel is inserted (f) a predetermined number of caissons (g) pairs of support columns placed on either side of predetermined adjacent support columns within the aforementioned array so as to form two rows of support columns defining a caisson support perpendicular to said perimeter, the distance between two said rows being such that said caisson fits precisely between them, and the caisson being structured to be secured to the support columns by locking means (h) support panels inserted between each pair of directly opposite support columns of said two rows so that said caisson rests on said panels and therefore said support panels form a platform between said two rows for caisson (i) turbines, a predetermined number of said turbines being enclosed in each said caisson; (j) a means for allowing water to pass through said turbine at the will of a human operator; (k) electric generators, each said generator connected to one or more said turbines whereby said elements render said enclosure without gap and thereby separating the ocean without from the interior of said enclosure except at such time as said human operator allows water to pass through said turbines and causing said generators to produce electric power.