The California Clean Tech Open, dubbed the "start-up in a box" contest, named 44 finalists Tuesday. It awards $100,000 in cash, office space, and professional services to each of the six winners. Categories are air, water, and waste; energy efficiency; green building; renewables; smart power; and transportation.
The Google-sponsored contest, run by the nonprofit Acterra, touts success stories such as, which makes photovoltaic solar concentrating systems, and BuildFast, which sells eco-friendly house kits for developing regions. Contest organizers said that an increasing area of focus.
Prizes are due to be announced November 6. Click here for a list of the finalists.