This paper presents an integrated approach to reducing the environmental impact of product development at
the system design stage, by a simultaneous consideration of product design, manufacturing, and the supply
chain. The approach incorporates a number of factors that ecologically influence the product lifecycle
activities into product architecture design. CAD-based functions are developed to systematically generate
manufacturing bills of material (BOM) by varying these factors. Lifecycle assessment is applied to evaluate
the environmental impact of the generated BOM’s. Optimization schemes guide the variation process to
search for optimal results. This work realizes computer-aided sustainable product development by offering a
system design tool of ecological decision making.