Venture Capital Rushes Into Alternative Energy

Money is flowing into alternative energy companies so fast that “the warning signs of a bubble are appearing,” according to a report on investment in clean technology by a New York research firm, Lux Research.

The report also suggests that companies that make equipment to cleanse air or water, or that process waste, have been overlooked by investors.

Matthew M. Nordan, president of Lux, said that the amount of venture capital put into clean energy investments last year was $1.5 billion, up 141 percent from the $623 million of 2005, and that in the same period, initial public offerings by companies in this sector rose to $4.1 billion, from $1.6 billion in 2005.

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