5. IAAM Model Description hi order to analyze the large number of concepts under investigation as part of this study, an Integrated Architecture Assessment Model (IAAM) has been developed. The primary purpose of this tool is to support the study objective of determination of economic feasibility of space solar power. To determine economic feasibility, it is required to simultaneously assess potential demand and revenues along with performance and cost. The model therefore, integrates not only the technical architecture and its associated development and operations costs, but the potential demand in the marketplace, and anticipated prices for delivered products. The IAAM provides a fast and consistent method for conducting comparative assessments among alternate architectural concepts, and for performing sensitivity analyses. The modeling effort was conducted in two phases, along with the overall study. Phase I was a high level model addressing architecture elements at a high level, as systems. Parametrics were developed to incorporate system characteristics of each of the architecture elements, such as launch systems and SSP satellite systems. Phase II was an evolution of the Phase I model that refined the parametrics developed in Phase I, and addressed subsystems, allowing sensitivities on lower level technologies, and providing greater fidelity. The economic viability of any technology program or project can be considered in terms of investment, return, and associated risk. The costs of investment are typically monetary, representing the financial investment in the project. The return or outcomes associated with the project will be monetary and nonmonetary, both positive and negative. Positive or negative monetary outcomes represent costs and revenues, taking into account monetized externalities (e.g., pollution, health effects, and so on) that are reflected as the return on investment. A summary of evaluation factors for SSP architectures is shown in Table 5-1. Positive or negative monetary outcomes represent the financial return on investment. In some cases, an entity such as an investor considering financial performance! may also consider non-monetary factors: for example, if pollution is regulated and regulatory costs are imposed. However, non-monetary outcomes
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