Solar Cell Support There are several railroad systems that have now created tunnels for the trains with the top of the tunnel covered in banks of solar cells, the energy provider for the trains. There are highway materials that can generate solar energy.  Both of these will be used for the California, Arizona, New Mexico, and western Texas segments of the system. The center tower will be a 'T' shape that will hold the High-Speed Rail system, in the top center of the 'T' will be another 'T' that holds the Solar Cell Panels.   {Need drawing of this } Index of ... Railway Solar’ May Be a Sweet Spot for Green Transportation. Solar Roadways® Solar Solutions U.S.’s First Public Solar Road Will Roll Out On Route 66