Gizmag
Panasonic is reporting a 25.6 percent conversion efficiency for its HIT (Heterojunction with Intrinsic Thin layer) solar cells. This is an improvement of 0.9 percentage points over the 24.7 percent conversion efficiency Panasonic achieved in February 2013, with the company claiming it as a world record for crystalline silicon-based solar cells of a "practical size."(100 cm2) (...) The company says the new record was made possible through further development of its proprietary heterojunction technology, which involves laminating layers of high-quality amorphous silicon onto a monocrystalline silicon substrate. (...) Additionally, unlike the 24.7 percent efficiency solar cells, the new record holders have the electrodes placed on the reverse of the panel as back contacts, allowing the light hitting the cell's surface to be more efficiently directed to the monocrystalline silicon substrate where power is generated. Placing the electrodes on the reverse side has also allowed the resistive loss when the current is fed to the grid electrodes to be reduced.
terça-feira, 15 de abril de 2014
quarta-feira, 9 de abril de 2014
Crowd-Funded US Rooftop Solar May Top $5 Billion in Five Years
Renewable Energy.com
Crowdfunding may supply the rooftop solar projects with $5 billion of investment within five years, more than 50 times the amount raised to date. That would represent more than a quarter of all annual investment in that segment of the solar industry, said Tim Newell, vice president of financial products for San Mateo, California-based SolarCity Corp., which is the biggest U.S. solar power provider by market value.
A growing number of rooftop solar developers are soliciting funds directly from retail investors, often through websites that tap a large number of small contributions. This so-called crowdfunding model has attracted almost $100 million in the U.S. to date, Newell said. It offers one of the few ways for individuals to back renewable energy projects, which give steady, long-term returns from selling electricity.
Crowdfunding may supply the rooftop solar projects with $5 billion of investment within five years, more than 50 times the amount raised to date. That would represent more than a quarter of all annual investment in that segment of the solar industry, said Tim Newell, vice president of financial products for San Mateo, California-based SolarCity Corp., which is the biggest U.S. solar power provider by market value.
A growing number of rooftop solar developers are soliciting funds directly from retail investors, often through websites that tap a large number of small contributions. This so-called crowdfunding model has attracted almost $100 million in the U.S. to date, Newell said. It offers one of the few ways for individuals to back renewable energy projects, which give steady, long-term returns from selling electricity.
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