TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Solar Photovoltaic Concentrator Panel: The window is dimensioned and configured to allow incident light into the container and to protect the Fresnel lens and the photovoltaic receiver from exposure to a predetermined set of weather elements, the window otherwise not comprising any lens features. The window comprises a glass, where the glass further comprises an anti-reflection coating on a predetermined side of the window, and where the glass is around 1 meter wide by around 1.5 meters long. The window is coextensive with all of the top. The window comprises a transparent polymer. The container is dimensioned and configured to be substantially weather-proof. The photovoltaic concentrator panel further comprises a side disposed intermediate the top and the bottom; and an end plate attached to the side. The container further comprises a water-tight seal disposed intermediate the top, bottom, and side, where the container further comprises a water-tight seal disposed intermediate the top and bottom. The top, bottom, side, and end plate comprise a non-flammable material. The side is sides; the end plate is end plates; and the sides and end plates are dimensioned and configured to close out the container; where the container further comprises a single-piece of sheet metal forming the top, bottom, sides, and end plates of the container as a single unit. The photovoltaic receiver is mounted to a predetermined inner surface of the container. The photovoltaic receiver comprises photovoltaic receivers. The solar photovoltaic concentrator panel further comprises a predetermined electronic component operatively interconnected to the photovoltaic receiver; where the electronic component comprises at least one of a direct current (DC)-to-DC voltage converter, a DC-to-alternating current (AC) inverter, and a sun-tracking controller. The container further comprises a conduit between at an external surface and the interior of the container, the conduit dimensioned and configured to prevent a pressure differential between the interior of the container and outside air. The Fresnel lens concentrator is arched; and the arched Fresnel lens concentrator is attached to a lens carrier. The lens carrier comprises lens carriers, each further comprising an end arch; and the arched Fresnel lens concentrator is attached to two end arches. The arched Fresnel lens concentrator is attached arched Fresnel lens concentrators dimensioned and configured such that there is one arched Fresnel lens concentrator per photovoltaic receiver. The Fresnel lens concentrator comprises an acrylic and is around 0.25 mm thick and made by a continuous roll-to-roll process. The Fresnel lens concentrator is mounted within the container independently of the window and is not bonded to the window. The Fresnel lens concentrator is secured along a predetermined border of the Fresnel lens concentrator into a lens carrier; and the lens carrier is supported at its ends or incrementally along its length to maintain its position relative to the center of the photovoltaic receiver, thus ensuring that the focal line produced by the Fresnel lens concentrator remains centered on the photovoltaic receiver. Each Fresnel lens concentrator is separated from the window. The solar photovoltaic concentrator panel further comprises a lens support disposed proximate each of the ends; where the Fresnel lens concentrator is secured at each of the ends to the lens supports; and the lens supports are dimensioned and configured to provide a tension force to support the Fresnel lens concentrator as a tensioned member and maintain a position of the Fresnel lens concentrator relative to a center of the photovoltaic receiver, and where a focal line produced by the Fresnel lens concentrator remains substantially centered on the photovoltaic receiver. The photovoltaic receiver comprises photovoltaic cells operatively interconnected into a photovoltaic cell circuit; and the photovoltaic receiver is attached to a carrier which serves as the mounting surface for the photovoltaic cells. The carrier is dimensioned and configured to serve as an electrical insulator that prevents shorting of the photovoltaic cell to the bottom of the photovoltaic concentrator panel. The carrier comprises at least one of a flex circuit or a printed circuit board. The carrier comprises independent dielectric film layers disposed below the photovoltaic concentrator cell circuit. The photovoltaic receiver is mounted on a heat exchanger attached to the bottom. The heat exchanger further comprises a fluid conduit at least partially disposed within the heat exchanger, the heat exchanger further comprising a substantially flat upper surface to which the photovoltaic receiver is mounted. The solar photovoltaic concentrator panel further comprises a fluid pump in fluid communication with the fluid conduit. The solar photovoltaic concentrator panel further comprises a fluid distribution system in fluid communication with the fluid conduit. A solar photovoltaic concentrator panel comprises (a) a container, the container further comprising (i) a top, the top comprising a transparent window, and (ii) a bottom dimensioned and configured as a passively cooled heat sink dimensioned and configured to dissipate waste heat to an ambient environment by at least one of convection and radiation, (iii) the top and bottom defining ends, (b) a free-standing Fresnel lens concentrator disposed within the container at a fixed position relative to a first interior dimension of the container, the Fresnel lens concentrator optically forming a focal region of concentrated sunlight within the container; and (c) a photovoltaic receiver, the photovoltaic receiver comprising a photovoltaic cell, the photovoltaic receiver disposed within the container and attached to the bottom at a fixed position relative to a centerline of the lens such that a focal region of concentrated sunlight from the Fresnel lens concentrator substantially coincides with the photovoltaic receiver. The solar photovoltaic concentrator panel further comprises end supports dimensioned and configured to support the free-standing Fresnel lens concentrator. The end supports are further configured to provide an end-to-end tensioning force into the freestanding Fresnel lens concentrators. The end supports comprise a substantially arched end disposed proximate to the free-standing Fresnel lens concentrator. A solar photovoltaic concentrator panel comprises (a) a container, the container further comprising (i) a top, the top comprising a transparent window, and (ii) a bottom dimensioned and configured as a passively cooled heat sink dimensioned and configured to dissipate waste heat from a photovoltaic cell to an ambient environment by convection and radiation, (iii) the top and bottom defining ends, (b) polymeric Fresnel Tens optical concentrators disposed within the container, each polymeric Fresnel lens optical concentrator being disposed at a predetermined position relative to a first interior dimension of the container, each polymeric Fresnel lens concentrator optically forming a focal region of concentrated sunlight within the container, and (c) photovoltaic receivers, each disposed within the container and attached to the bottom, each photovoltaic receiver being disposed at a predetermined position relative to a centerline of a corresponding one of the polymeric Fresnel lens concentrators such that the focal region of concentrated sunlight from each polymeric Fresnel lens concentrator substantially coincides with a corresponding photovoltaic receiver, each photovoltaic receiver further comprising a photovoltaic cell; and d. a lens support dimensioned and configured to independently connect a predetermined polymeric Fresnel lens concentrator to the bottom proximate to its corresponding photovoltaic receiver and to support and align the polymeric Fresnel lens concentrator such that its focal region remains substantially coincident with its associated photovoltaic receiver. The solar photovoltaic concentrator panel further comprises sides and end plates disposed intermediate the top and bottom, the top, sides, end plates, and bottom comprising a substantially non-flammable material. A solar photovoltaic concentrator panel comprises (a) a container, the container further comprising (i) a top, the top comprising a transparent window, (ii) a bottom, (iii) sides disposed at outer boundaries of the container intermediate the top and bottom, (iv) end plates disposed at outer boundaries of the container intermediate the top and bottom, (v) the bottom, sides, and end plates further dimensioned and configured to enclose a predetermined volume of the container beneath the window, (b) a Fresnel lens optical concentrator disposed within the container at a predetermined position relative to a first interior dimension of the container, the Fresnel lens concentrator optically forming a focal region of concentrated sunlight within the container, (c) a fluid cooled heat sink further comprising a fluid conduit the fluid cooled heat sink attached to the bottom, (d) a photovoltaic receiver disposed within the container, the photovoltaic receiver operatively in communication with the fluid cooled heat sink, the photovoltaic receiver and the heat sink being further disposed at a predetermined position relative to a centerline of the corresponding lens such that a focal region of concentrated sunlight from the Fresnel lens optical concentrator substantially coincides with a corresponding photovoltaic receiver, the photovoltaic receiver further comprising a photovoltaic cell, and (e) a support dimensioned and configured to independently connect the Fresnel lens optical concentrator to the heat sink of its corresponding photovoltaic receiver and to support and align the Fresnel lens optical concentrator such that its focal region remains substantially coincident with the photovoltaic receiver. The fluid is a liquid. The solar photovoltaic concentrator panel further comprises a pump in fluid communication with the liquid.