While we are seeing many exciting new developments every day in green technologies, one of the interesting features of the current cleantech boom is its reliance on mature technologies such as solar PV and wind, which went through prior periods of innovation in the 1970s and ’80s.
Thus, many of the green technologies in use today are
REhnu (pronounced “renew”) is a company based in Tucson, Arizona that makes and sells concentrated photovoltaic (CPV) solar energy systems.
The company believes that the greatest energy for the least cost may consist in first greatly
Researchers at the Massachusetts Institute of Technology (MIT) report that they have used carbon nanotubes to concentrate solar energy 100 times more efficiently than regular photovoltaic cells. The researchers, reporting in the journal Nature Materials, said that the nanotubes — hollow tubes of carbon atoms — could form antennas that effectively capture and focus light energy,