THE WALL ALL THE FRONTAGE INCLUDES, ON THE ONE HAND, AREAS (4) RECEIVING PLANTS (3) AND, ON THE OTHER HAND, PHOTOVOLTAIC PANELS (5). THESE PANELS (5), ARRANGED ALTERNATELY WITH RESPECT TO THE AREAS (4) COVERED WITH PLANTS (3), ARE COOLED BY AN AIRFLOW (F) CIRCULATING IN CONTACT WITH THE PLANTS (3), WHICH ALLOWS OPERATION OF THE PHOTOVOLTAIC PANELS (5) UNDER OPTIMUM CONDITIONS. [FIG. 3]