10/21/2011 12:13 pm ET | Updated Dec 21, 2011

Greenest Tech Companies List Released (PHOTOS)

Newsweek has compiled a list of the world's 30 greenest tech companies as part of its 2011 Green Rankings. Some of them you may recognize from the list of the overall 15 greenest U.S. companies.

For this list, Newsweek pulled all of the tech companies, including both hardware and software makers, from its 2011 greenest companies in the world list.

The magazine partnered with two research firms, Trucost and Sustainalytics, and developed the methodology "in consultation with an advisory panel of corporate sustainability experts."

An unrelated recent study, entitled "Analysis of Small Business Innovation in Green Technologies," by the U.S. Small Business Administration found that small business leads the way in "green technology innovation" in America. According to a press release, small business only accounts for eight percent of U.S. patents, yet they account for 14 percent of green tech patents.

More information about Newsweek's 2011 Green Rankings methodology can be found here.

View the 2011 Green Rankings list below courtesy of Newsweek/The Daily Beast.

Top 30 Greenest Tech Companies