Abstract: A unitized cladding system that incorporates energy reducing and harvesting technologies may be installed on a building's exterior wall to reduce the building's net energy consumption and costs. A method for configuring a unitized cladding system to optimize a building's energy savings involves measuring the building's current energy consumption based on information relating to the building's site and composition, designing and assembling cladding units that incorporate suitable energy saving and harvesting modules, and measuring the effects of the cladding system on the building's net energy consumption. This method may be enabled by a software program product.