Power/energy: Solar Power Satellite: Putting it together: Enormous structures involving unique fabrication methods call for new materials, tools, and heavy-lift vehicles

Building a Solar Power Satellite in space is not an easy feat. Consider the following: • It will be necessary to put up an assembly line in space. • Lightweight, but at the same time strong and durable, materials will be needed. • There are specific advantages to each of the two options on where in space to build the SPS: directly in geosynchronous orbit (GEO), or in low earth orbit. (LEO), with subsequent transfer to GEO. • A completely new heavy-lift launch vehicle will be needed to carry the construction equipment and materials aloft. • Special manipulative tools will be required for assembly work in space.