"There is only 1,000W of power in 1^2 yard of sunlight,"
1^2 yard is a surface area. Think 3-Dimensionally, not 2-Dimensionally also avoid viewing it from such a large scale (yards). More watts and more photons are captured in a larger surface area right? Photons can be captured, concentrated and absorbed right?
SMOKE(lIGHT FILTERS) MIRRORS AND THE SHAPE OF SURFACE AREA CAN AND HAS INCREASED THE FIGURES.
Sources: Scientific American, NREL, GTRI, ANU and Spectrolab.
"Australian National University and Origin Energy have developed a technique for slicing a single silicon wafer, which allows a significantly larger collector surface area, compared to usual solar cells. The technique involves taking a silicon wafer, typically 1 to 2mm thick, and creating a multitude of slices downward, creating a large number of slivers that are 50 micrometres thick. These slices are rotated 90 degrees, THEREBY MULTIPLYING THE SURFACE AREA OF EXPOSED SILICON. The electrical doping and contacts are placed on either side of the sliver, rather than the traditional front and rear. This has the interesting effect of making the cell sensitive from both the front and rear of the cell."
SPECTROLAB
"Such triple-junction solar cells are specially tuned to work with concentrated light, in this case the wattage of 240 suns. The resulting efficiency nearly doubles that of standard silicon solar cells, which hover at 22 percent. That gain requires, however, the use of light-concentrating devices, such as MINIATRUE PLASTIC LENSES AND MIRRORS. The new solar cell achieved (40.7) percent efficiency under such concentrated light at the testing center at the National Renewable Energy Laboratory in Colorado. One cell of just 0.26685 square centimeter (or roughly 0.04 square inch) pumped out 2.6 watts of electricity when bathed at the maximum light concentration." the triple-junction solar cell may not hold the efficiency record for long. "We are also looking at four-, five-, even SIX-JUNCTION solar cells," HMMM WHAT MIGHT THEY BE TALKING ABOUT.
Georgia Tech Research Institute (GTRI) scientists have demonstrated an ability to precisely grow "TOWERS" composed of carbon nanotubes atop silicon wafers. (MY U SHAPED BUILDING EXAMPLE).
The nanometer-scale scale towers, which would be coated by the special p-type and n-type semiconductor (p/n) junction materials used to generate electrical current, would INCREASE THE SURFACE available to produce electricity.
Reflections off the Gothamesque towers would provide more opportunity for each photon of sunlight to interact with the p/n junction of the cell. That would increase the power output from PV cells of a given size, or allow cells to be made smaller while producing the same amount of power.
Also look at US Patent number US1289369
What was that you said about only 1KW and 8-17% effeciency?