Several studies conducted in the past few years have been directed toward exploring the feasibility of this concept. The results of these studies have generally been favorable, while reflecting a need for significant technological advancement if the concept is to be economically competitive with ground-based systems. ... it was decided to implement at JSC a more detailed study of the Space Solar Power Concept. This document (Volume 1) presents a summary of the results of that study. Volume 2 contains the detailed studies on which the summary was based.