Notable clean energy investments for the week of May 18, 2008.

Iberdrola commits $8B investment to U.S. cleantech sector “Spanish utility and renewable heavyweight Iberdrola has revealed that it will invest a hefty $8 billion in the American cleantech sector over the next 3 years.

Though it plans on focusing most of its investment activities in the U.S.’s burgeoning wind sector, it also hopes to gain a foothold in the country’s other clean energy markets.”

First Wind Energy Co. IPO Planned In US “In a first-ever for the U.S., a company focused entirely on wind energy is planning to come public, with Noble Environmental Power Inc. registering an IPO to list on the Nasdaq later this year.Based in Essex, Conn.,

Noble Environmental registered earlier this month with the Securities and Exchange Commission to raise as much as $375 million through an initial public offering.”

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