15 companies that will change the world

These game-changing startups are likely to upend existing industries - and spawn new entrepreneurial opportunities.

Bloom Energy
Bloom Energy
CEO: K.R. Sridhar
Disruption: Energy generators in homes and businesses
Disrupted: Electric utilities

The company's vision is to use solid-oxide fuel cells to allow homes to generate their own electricity. The fuel cells would use (but not burn) hydrocarbon fuel, and produce just half the carbon dioxide that today's power plants do. One fuel cell should be enough to serve a home; homes could sell excess power back to the grid. Bloom Energy's biggest hurdle is cost. It needs to get the price of its machines below $10,000 apiece.






Virgin Charter


Bloom Energy



A123 Systems

Renewable Energy Group

Desktop Factory


One laptop per child
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