A power harvesting system comprising: a plurality of photovoltaic panels; a plurality of casings for respectively supporting the plurality of photovoltaic panels; a plurality of converter circuits, each converter circuit having one terminal of a pair of terminals of primary inputs electrically connected to a respective one of the plurality of photovoltaic panels, and each converter circuit having secondary outputs galvanically isolated from the primary inputs; and the power harvesting system being characterized by: each converter circuit having the other terminal of the pair of terminals of the primary inputs electrically connected, via the corresponding casing, to a common ground such that the connected photovoltaic source generates an output voltage with respect to the common ground; and a first photovoltaic string including a first series connection of the secondary outputs of a first subset of said converter circuits (Fig. 4, 103, 103a, 103, left column); and a second photovoltaic string including a second series connection of the secondary outputs of a second subset of said converter circuits (Fig. 4, 103, 103a, 103, middle column) different from first subset of said converter circuits, said first and second photovoltaic strings being connected in parallel to each other and to a load connected across said first and second photovoltaic strings, each converter circuit being integrated with a corresponding one of the plurality of photovoltaic panels wherein each of the photovoltaic panels is only insulated for a voltage rating of the voltage output by said panel with respect to the common ground. a plurality of photovoltaic panels; a plurality of casings for respectively supporting the plurality of photovoltaic panels; a plurality of converter circuits, each converter circuit having one terminal of a pair of terminals of primary inputs electrically connected to a respective one of the plurality of photovoltaic panels, and each converter circuit having secondary outputs galvanically isolated from the primary inputs; and the power harvesting system being characterized by: each converter circuit having the other terminal of the pair of terminals of the primary inputs electrically connected, via the corresponding casing, to a common ground such that the connected photovoltaic source generates an output voltage with respect to the common ground; and a first photovoltaic string including a first series connection of the secondary outputs of a first subset of said converter circuits (Fig. 4, 103, 103a, 103, left column); and a second photovoltaic string including a second series connection of the secondary outputs of a second subset of said converter circuits (Fig. 4, 103, 103a, 103, middle column) different from first subset of said converter circuits, said first and second photovoltaic strings being connected in parallel to each other and to a load connected across said first and second photovoltaic strings, each converter circuit being integrated with a corresponding one of the plurality of photovoltaic panels wherein each of the photovoltaic panels is only insulated for a voltage rating of the voltage output by said panel with respect to the common ground. each converter circuit having the other terminal of the pair of terminals of the primary inputs electrically connected, via the corresponding casing, to a common ground such that the connected photovoltaic source generates an output voltage with respect to the common ground; and a first photovoltaic string including a first series connection of the secondary outputs of a first subset of said converter circuits (Fig. 4, 103, 103a, 103, left column); and a second photovoltaic string including a second series connection of the secondary outputs of a second subset of said converter circuits (Fig. 4, 103, 103a, 103, middle column) different from first subset of said converter circuits, said first and second photovoltaic strings being connected in parallel to each other and to a load connected across said first and second photovoltaic strings, each converter circuit being integrated with a corresponding one of the plurality of photovoltaic panels wherein each of the photovoltaic panels is only insulated for a voltage rating of the voltage output by said panel with respect to the common ground.