NOVELTY - A building integrated photovoltaic power generating system comprises unitized curtain wall units (105, 105') adapted as part of an exterior shell for a building structure (100), and including vertical areas formed of glazing and/or cladding materials. The curtain wall unit includes vertical and horizontal framing members defining glazing areas in both vision and spandrel areas. At least two of the glazing areas contain one or more integrated photovoltaic conversion devices being electrically connected to control units integrated within the unitized curtain wall unit.    USE - Photovoltaic power generating system for use within an exterior shell or facade of a building structure.    ADVANTAGE - The unitized curtain wall system can deliver energy production capability more specifically photovoltaic functionality similar to a rooftop PV installation. That is, a system that primarily functions to generate electricity from solar power once the entire set of parts are assembled, and also performs the same esthetic cladding function as prior art curtain wall systems. The difference here, is that the power generation is as compatible as possible with the requirements of a curtain wall unit, including resistance and compliance with various regulations concerning heat/conductive/insulation properties, air/water infiltration, wind load resistance and seismic considerations.    DETAILED DESCRIPTION - A building integrated photovoltaic power generating system comprises unitized curtain wall units (105, 105') adapted as part of an exterior shell for a building structure (100), and adapted to be hung from and situated in front of the building structure and including vertical areas formed of glazing and/or cladding materials. At least one such unitized curtain wall unit includes vertical and horizontal framing members defining glazing areas in both vision and spandrel areas. At least two of the glazing areas including both the vision and spandrel areas each contain one or more integrated photovoltaic conversion devices being electrically connected to control units integrated within the unitized curtain wall unit. The unitized curtain wall units form a photovoltaic power generating array. An INDEPENDENT CLAIM is included for manufacture of a building integrated photovoltaic power generating system.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram of a photovoltaic power generating system implemented within an exterior shell or facade of a building structure.    Building structure (100)    Unitized curtain wall units (105, 105')    Spandrel based module (110)    Vision material element (115)    Photovoltaic module (120)