Alternative Energies
Finding a way to boost efficiency of CIGS solar cells

Researchers have revealed the structure of the buffer layer in a CIGS (copper-indium-gallium-selenide) solar cell at SPring8, the world’s largest third-generation synchrotron radiation facility. They found that the buffer layer was composed of two layers: an upper Zn(OH)2 layer and a lower Zn(S, O) layer. By removing the upper Zn(OH)2 layer, the solar conversion efficiency was doubled.

Team of appraisers across six states find home buyers will pay premium for solar homes

Photovoltaics added value to homes in six markets, according to a new report. They engaged a team of seven appraisers from across the six states to determine the value that solar photovoltaic systems added to single-family homes using the industry-standard paired-sales valuation technique, which compares recent sales of comparable homes to estimate the premium buyers would pay for PV.

Shifting winds: An early warning for reduced energy

Chinook winds can precede large shifts in wind power output from wind farms — a challenge for companies seeking to provide a constant stream of green energy to consumers. By establishing a connection between local meteorological events and power grid output, the researchers hope that they may ultimately help grid operators more accurately predict fluctuations in flow and manage the grid accordingly.