NOVELTY - Photovoltaic (PV) assembly comprises: framework; PV support section; and stiffening device.    USE - The PV assembly is useful for solar energy collection.    ADVANTAGE - The PV assemblies facilitate low cost shipment to, and installation at, a large scale solar energy collection site.    DETAILED DESCRIPTION - Photovoltaic assembly comprises: framework including a perimeter frame defining a length of at least 10 feet, a width of at least 5 feet and a height, the perimeter frame including: a PV support section having opposing, first and second PV support faces each defining a plane; one or more PV laminates assembled to the perimeter frame to collectively define a PV front surface and a PV rear surface, the PV front surface being proximate the first PV support face plane and the PV rear surface being spaced from the second PV support face plane to define a receiving zone bounded by the perimeter frame and the second PV support face plane; where the receiving zone defines a depth in a direction of the height of not more than 8 inches; and a stiffening device associated with the framework and configured to provide: a first state in which an entirety of the stiffening device is maintained within the receiving zone, a second state in which at least a portion of the stiffening device projects from the receiving zone beyond the second support face plane; where the second state of the stiffening device enhances a stiffness of the photovoltaic assembly in plane of the perimeter frame as compared to a stiffness in the first state. INDEPENDENT CLAIMS are:    (1) a shippable photovoltaic kit comprising: photovoltaic assemblies each comprising: framework including a perimeter frame defining a length of at least 10 feet, a width of at least 5 feet, and a height, the perimeter frame including: a support section having opposing, first and second PV support faces each defining a plane, one or more PV laminates assembled to the perimeter frame to collectively define a PV front surface and a PV rear surface, the PV front surface being proximate the first PV support face plane and the PV rear surface being spaced from the second PV support face plane to define a receiving zone bounded by the perimeter frame and the second PV support face plane, the receiving zone having a depth of not more than 8 inches, a stiffening device associated with the framework and configured to provide: a first state in which an entirety of the stiffening device is maintained within the receiving zone, a second state in which at least a portion of the stiffening device projects from the receiving zone beyond the second PV support face plane, where the second state of the stiffening device enhances a stiffness of the PV assembly in plane of the perimeter frame as compared to the first state; and a cargo shipping container sized to contain the photovoltaic assemblies in a stacked arrangement; and    (2) a method for delivering PV assemblies to an installation site comprising: providing PV assemblies each including: framework including a perimeter frame defining a length of at least 10 feet, a width of at least 5 feet, and a height, the perimeter frame including: a support section having opposing, first and second PV support faces each defining a plane, one or more PV laminates assembled to the perimeter frame to collectively define a PV front surface and a PV rear surface, the PV front surface being proximate the first PV support face plane and the PV rear surface being spaced from the second PV support face plane to define a receiving zone bounded by the perimeter frame and the second PV support face plane, the receiving zone having a depth of not more than 8 inches, a stiffening device associated with the framework and configured to provide: a first state in which an entirety of the stiffening device is maintained within the receiving zone, a second state in which at least a portion of the stiffening device projects from the receiving zone beyond the second PV support face plane; where the second state of the stiffening device enhances a stiffness of the PV assembly in plane of the perimeter frame as compared to the first state; loading the PV assemblies in the first state into a cargo shipping container in a stacked arrangement; transporting the loaded container to an installation site; and unloading the PV assemblies from the container.