Earth-based solar power

Earth-based solar power (EBSP) technology... 

Earth-based solar power (EBSP) is abundantly available, but it is variable and intermittent it is less effective in overcast or cloudy conditions and cannot generate electricity at night. Its conversion tends to be material-intensive, leading to high investment costs these are decreasing as more experience is gained in this area (Wiser et al., 2009). 

Another advantage is that waste heat is re-radiated back into space, instead of warming the biosphere as occurs with conventional sources. Some energy is lost in transmitting power to stations on the Earth, but this would not offset the advantages of an orbiting solar power station over ground based solar collectors. 

A solar power satellite in orbit uses microwave power transmission to beam solar power to a very large antenna on Earth. The system consists of three parts a solar collector, made up of solar cells and a microwave antenna on the satellite, aimed at the Earth antenna to collect the power. The Earth-based receiver antenna called a rectenna would consist of a series of short dipole antennas. 

Photovoltaic (PV) solar cells, which convert incident solar radiation directly into electrical energy, today represent the most common power source for Earth-orbiting spacecraft, such as the International Space Station, where a photovoltaic engineering testbed (PET) is actually assembled on the express pallet. The solid-state photovoltaics, based on gallium arsenide, indium phosphide, or silicon, prove capable, even if to different extents and with... 

Low-iemperature Ti02 film fabrication based on an understanding of tne electron transpor1 will also open up the possibility for further reduction in production costs. Study of the environmental aspects of dye-sensitized solar ceds revealed that DSC is a suitaole alternative for the electric generator because of its earth-friendliness.105) Based on a Life Cycle Assessment in ISO 14040 standard, carbon dioxiae emission of the cell is estimated to be 19-47 g C02/kWh, whicn is 1/10 that of the gas power plant (450 g C02/kWh). " oxicity of Dye 3 is negligible because of its negative Ames test.106 ... 

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