Here comes the sun
When "Reaching for Rays: Scientists work toward a solar-based energy system" (SN: 5/26/07, p. 328) says that "scientists don't expect traditional silicon-based solar cells to become competitive with fossil fuels," one has to ask, "Ever?" Can anyone accurately predict the future price of polysilicon or of fossil fuels?
Peter A. Kaczowka
Your article notes as a put-down that it would be necessary to build a 1-gigawatt nuclear-fission plant every day and a half for the next 45 years to meet anticipated global electrical demand. A similar calculation indicates that building an equivalent solar capacity would require that we coat about 60 square kilometers of desert with photovoltaic material every day and a half, plus build a massive load-leveling system.
Research into the storage of