More Galleries
Commuting is getting easier. Here's why The MobiPrize, conducted by SMART at the University of Michigan, recognizes innovation in global transportation. From microcars to auto rickshaws, these six startups are some of the standouts. More
A sampling of beers being made with traditional Latin flavors A small but growing number of craft breweries are including passion fruit, Mexican cinnamon and other traditional Latin flavors. More
Banks won't lend? Use these guys instead Banks often have exhaustive approval processes, high minimums, and flawless credit requirements. But there's a wealth of non-bank alternatives for those who need capital fast. Here are some of the leaders. More

Special Offer
5 of 36
5th place: Solar energy gets cheap
5th place: Solar energy gets cheap
Vanja Lichtensteiger, Christian Pfeffer, and Lukas Lichtensteiger
Team name: Enexra

School: Harvard University, Harvard Business School

Team members: Vanja Lichtensteiger, Christian Pfeffer, and Lukas Lichtensteiger

Concept: Enexra's founders have developed a technology that allows for more efficient use of crystalline silicon in solar cells - a breakthrough that could allow solar cells to generate electricity at costs competitive with conventional energy sources.

The founders are both Harvard post-doctoral fellows with extensive experience in physics, materials science and microfabrication. They have created several working prototypes of their technology, which targets a rapidly expanding market: The photovoltaic industry is growing at 30% per year, a rate Enexra expects to continue for the next two decades.

Timeline: Enexra's operational plan is twofold. First, it will set up a production facility for its efficient crystalline silicon, which it plans to sell to other companies. The profits from this first step will allow the company to make its own solar cells incorporating its technology. Enexra plans to enter the market by mid-2009 and to start manufacturing solar cells in 2010. - Konstantin Shishkin

NEXT: 6th place: Better heart monitoring

Last updated May 02 2008: 11:51 AM ET
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.