NOVELTY - The roofing system with integrated photovoltaic power generation comprises photovoltaic panels (200) each of which includes a photovoltaic cell on an upper surface of the photovoltaic panel. Each photovoltaic panel includes an underlying structure placed beneath the photovoltaic cell. The underlying structure includes a lower side wall defining a portion of a lower edge of each photovoltaic panel, and an upper side that is opposite to the lower side wall. The upper side defines a portion of an upper edge of each photovoltaic panel.    USE - Used as a roofing system with integrated photovoltaic power generation.    ADVANTAGE - The roofing system maintains the water from coming in contact with structural portions of the roof of buildings.    DETAILED DESCRIPTION - The roofing system with integrated photovoltaic power generation comprises photovoltaic panels (200) each of which includes a photovoltaic cell on an upper surface of the photovoltaic panel. Each photovoltaic panel includes an underlying structure placed beneath the photovoltaic cell. The underlying structure includes a lower side wall defining a portion of a lower edge of each photovoltaic panel, and an upper side that is opposite to the lower side wall. The upper side defines a portion of an upper edge of each photovoltaic panel. The lower side wall of a first photovoltaic panel: overlies the upper side of a second photovoltaic panel; is openly accessible above the photovoltaic cell on the upper surface of the second photovoltaic panel underlying the first photovoltaic panel; and includes ports that provide access to a space beneath the photovoltaic cell of the photovoltaic panels. The first and second photovoltaic panels are adjacent to each other, and are angled with the upper sides higher than the lower side walls for each photovoltaic panel. The underlying structure further includes multiple separate brackets with one port in each lower side wall of each bracket. An expansion joint is located between two of the multiple brackets of the first photovoltaic panel. The first photovoltaic panel includes a door sized to cover the port. The door: is movable between two positions with one of the two positions covering the port that is more completely than the other of the two positions; and includes a face portion that is planar and is sized to overlie the port when the door is present in a closed position, and a tray portion extending from an inner side of the face portion. The face portion is sized larger than the port with a perimeter of the face portion adapted to abut portions of the lower side wall adjacent to the port and with portions of the door extending inward from the face and into the port. The tray portion extends through the port when the face portion is adjacent to the lower side wall. The tray portion includes an underside having portions placed above portions of the face portion of the door such that the portions of the underside overlie the space beneath the first photovoltaic panel, and is adapted to have photovoltaic cell electronics coupled to the tray portion through the underside of the tray portion. The photovoltaic cell electronics are coupled to the photovoltaic cell through wiring. The wiring has sufficient slack to allow the door to move away from the port in the lower side wall while remaining connected between the photovoltaic cell electronics and the photovoltaic cell. INDEPENDENT CLAIMS are included for:    (1) a support structure for a photovoltaic cell; and    (2) a method for accessing photovoltaic cell electronics of partially stacked array of separate photovoltaic panels.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic perspective view of a roof with photovoltaic elements.    Stringers (190)    Additional spacer (192)    Photovoltaic panel (200)    Bottom vent (240)    Top vent (250)    Edge flashing. (280)