This 40% breakthrough … has finally become available for your home (maybe?) and office use …
Solar cell breaks efficiency record
Michael Kanellos, CNET News — December 6, 2006
Boeing-Spectrolab has developed a solar cell that can convert almost 41 percent of the sunlight that strikes it into electricity, the latest step in trying to drop the cost of solar power.
Potentially, the solar cell could bring the cost of solar power down to around $3 a watt, after installation costs and other expenses are factored in, over the life of the panel.
[…]
Current silicon solar cells provide electricity at about $8 a watt, before government rebates. The goal is to bring it to $1 a watt without rebates or incentives.
http://news.cnet.com/Solar-cel…
Here is the Final Product from Spectrolab for your Home use. from this week’s news.