Clean Tech by Clint Wilder

Solar Energy....

brightsource energy..

first solar (usa)

solar world (germany)

trina solar

wind power....

vestas

General electric (usa)

siemens

gold wind

http://en.wikipedia.org/wiki/Goldwind_Science_and_Technology

sustainable biofuels..

range fuels

http://www.rangefuels.com/

mascoma

http://www.mascoma.com/pages/index.php

synthetic genomics

http://www.syntheticgenomics.com/

aurora biofuels

http://www.aurorabiofuels.com/

sustainable oils

http://www.susoils.com/

brightworks

http://www.brightworks.net/

earth advantage

http://www.earthadvantage.com/

hycrete

http://www.hycrete.com/

smart grid

silverspring networks

enernoc

bpl better power lines

itron

cisco

cisco and intel collaborating on smart grid

Clean-Tech Challenges

resource constraints: silicon, steel, corn, etc

several index funds available in these sectors