of solar power for the base." (2007dec) Credit: U.S. Air Force photo/Airman 1st Class Nadine Y. Barclay. Linked source: Wikipedia image http://en.wikipedia.org/wiki/Image:Giant_photovoltaic_array.jpg . Public domain. Solar power is big, eternal, intermittent, and turns off at night. There is a Solar Power Grand Plan Zweibel et al. 2008, Scientific American, January, p. 64.