The present invention discloses a photovoltaic panel wall mounted on a building frame and comprising at least two photovoltaic assembly units. Each of the at least two photovoltaic assembly units comprises an electrical connector having a male terminal and a female terminal that are configured to be detachably engaged. Any adjacent two of the at least two photovoltaic assembly units are electrically connected by use of the respective electrical connectors thereof. An opening is formed in the building frame, and one of the male and female terminals of the electrical connector is fixed in the opening.
