Solar

Interesting nuggets remain to be found in last quarter's cleantech venture data.

For instance, as a percentage of early stage deals done in last quarter's cleantech venture data (3Q09), alternative energy ventures—in particular solar, followed by energy efficiency and materials—received the largest share of early stage venture deals done.

This tells us a few things when compared to this quarter’s main investment trends:

A recent solar advancement out of Georgia Institute of Technology may be innovative, but it is by no means novel.

Researchers said they’ve come up with a three-dimensional photovoltaic system that could allow PV systems to be located other places besides rooftops. The technology uses zinc oxide nanostructures grown on optical fibers and coated with dye-sensitized solar cell materials.

The researchers said the technology enables PV generators to be foldable, concealed and mobile. According to Professor Zhong Lin Wang, optical fiber could conduct sunlight into a building’s walls, where the nanostructures would convert it to electricity.